|
|
|||||||||||||||||||||
| Please enable javascript in your
browser to see a site-search form here.
|
||||||||||||||||||||||
| 2012-01-08 |
Gemini:
|
| 2011-12-27 |
Gemini:
|
| 2011-12-26 |
Gemini: More bug fixes to
the OBC assembler program, yaASM.
I
think
it's
pretty close to 100% correct now. I've also created
an OBC CPU emulator called yaOBC,
which
is
also
pretty close to 100% functional, except there are
presently no physical or emulated peripheral devices to attach to the
CPU yet, so it's purely an emulation of the CPU in isolation.
There is, however, a primitive command-line based debugger interface
included, from which you can view or edit memory, run the OBC program,
single step, set breakpoints at instructions or data locations in
memory, etc. The source code for these is in subversion, and executables for the programs can be
downloaded from here. |
| 2011-12-23 |
Gemini assembler: I
realized somewhat belatedly that I hadn't accounted for overlaying
program modules in memory. this has been fixed by changing the
syntax of the CODE
and DATA
directives in OBC assembly language slightly. Both the yaASM program itself and the
write-ups on the Gemini page have been fixed. |
| 2011-12-21 |
Gemini:
|
| 2011-12-20 |
Gemini:
|
| 2011-12-18 |
All things Gemini:
|
| 2011-07-24 |
I've been very lax about
updating this site, and so have a pretty large backlog of stuff to deal
with that people have sent me and that has just been sitting on my
to-do list. Sorry about that! First, a status report:
|
| 2010-09-05 |
In the document library,
provided the multi-page fold-out flowcharts of the Gemini catch-up and
rendezvous simulation program as separate single-page images.
Also, added several documents related to the IBM 704/7090/7094 systems
that I found useful in porting the program to make it buildable with gcc. (The porting isn't yet
complete, in that I'm still working on various of the assembly-language
subroutines.) |
|
| 2010-08-26 |
On the Gemini page, corrected
"Ferney Hough" to "Dal G. Ferneyhough, Jr." Also, added a photo
of Gene Mertz et al., and some
additional recollections from Gene. |
|
| 2010-08-15 |
|
|
| 2010-08-11 |
|
|
| 2010-02-20 |
|
|
| 2010-01-30 |
Mike Jetzer pointed out that all
of the links to the Apollo press kits on the document-library page were
wrong. (Thanks, Mike!) That has been fixed. |
| 2009-11-12 |
|
|
| 2009-09-02 |
Have made most of the PDFs in the Document Library searchable by adding a background OCR'd text layer. I say "most" because I tried to do all of them, but may have missed a few. If so, I'll catch them later. Have continued the process of adding bookmark panes and metadata (title, author, etc.) to them, but that's a much slower process since it's entirely manual. | |
| 2009-08-30 |
Re-photographed and re-posted Fred Martin's Colossus 237 program listing. Not that I thought there was anything wrong with what I had, but because I still had the listing in hand and had acquired a better camera. The new photos have much better contrast (the background is lighter and the text is darker), so it's a good improvement. | |
| 2009-08-26 |
Since there's now a site-search bar, I think it's appropriate to make sure that all of the PDFs in the Document Library have embedded metadata (such as title & author), sidebars with bookmarks to the various sections of the doc (where appropriate), and background OCR to make them searchable (where the document characteristics are compatible with Adobe Acrobat's OCR capability). Obviously it will take a good long while to fix up all of the PDFs, and even longer for Google to reindex them, but I'm making a start on it as of today. | |
| 2009-08-25 |
Added a site-search bar to the
top of every page. It's swell! |
|
| 2009-08-24 |
Added several "Apollo Experience
Reports" to the Document Library, including
reports on the "programers" (yes, that's the real spelling) which were
the automated stand-ins for crewmen on the unmanned missions Apollo 4,
Apollo 5, and Apollo 6. |
|
| 2009-08-23 |
|
|
| 2009-08-17 |
Added a Gemini
spacecraft
computer
page, even though it's empty right now, and
added documentation (all scarfed from the Meadville Space
Center website) of the Gemini spacecraft computer to our Document Library. This is partly
sheer compulsiveness, but also partially because John Pultorak has
pointed out that the LVDC must be descended
from the Gemini computer, simply because of some very deep similarities
between them. |
|
| 2009-08-15 |
Added a "how to digitize" page to the website. |
|
| 2009-08-14 |
Integrated an LVDC page into the website. It's a work in
progress, but it has enough info on it now, and enough corrections and
improvements from the corresponding wikipedia article, that it's
starting to become useful. |
|
| 2009-08-09 |
|
|
| 2009-08-06 |
|
|
| 2009-08-05 |
|
|
| 2009-08-04 |
|
|
| 2009-08-03 |
I no longer observe the
persistent FreeBSD problems I mentioned at the bottom of yesterday's
post, even though I haven't fixed them. I wonder if perhaps
FreeBSD doesn't have to be be rebooted after building Virtual AGC or
something wacky like that. At any rate, today the FreeBSD native
build seems to be 100% functional and virtualy identical in behavior to
the other builds. |
|
| 2009-08-02 |
|
|
| 2009-07-31 |
Added scans of the Apollo 8
Flight Plan (sections
1-2 and sections
3-5), contributed by Fred Martin. |
|
| 2009-07-30 |
|
|
| 2009-07-27 |
Added some new documents (memo and addendum)
describing the detailed method originally used to find approximations
for solar ephemerides data suitable for use by the AGC. Thanks to
Bill Robertson, one of the original developers! |
|
| 2009-07-26 |
|
|
| 2009-07-24 |
|
|
| 2009-07-22 |
|
|
| 2009-07-18 |
|
|
| 2009-07-07 |
Stephan Hotto has sent along a
bug-fix the LM-Simulator program. The bug was found by Riley
Rainey. Thanks to both! |
|
| 2009-07-04 |
|
|
| 2009-06-29 |
(SVN only at the moment, since
no development snapshot released yet.) Building on Onno's
syntax-highlighting ideas, yaYUL
and yaLEMAP now have an --html
command-line switch which allows them to directly create HTML of their
assembly listings. These are not only colorized, but also have
hyperlinking from wherever symbols (such as constants or line labels)
are used back to the points where they are defined. The HTML
forms of the listings are available from the yaAGS,
Luminary, Colossus,
and
links pages. |
|
| 2009-06-27 |
On the download page, added a
section about networking problems, to cover problems which have been
observed with Fedora 11, as well as to summarize potential problems I
was already aware of on other systems. Thanks to Onno Hommes for
reporting the Fedora 11 problem and fix. |
|
| 2009-06-20 |
On the "volunteering" page, I've
added a lot of material about proofing tasks (octal listings
and program
comments) that I wouldn't mind accepting help with. Those
tasks were previously mentioned, I think, but were basically left to
the imagination. |
|
| 2009-06-18 |
|
|
| 2009-06-17 |
|
|
| 2009-06-13 |
|
|
| 2009-06-07 |
|
|
| 2009-06-06 |
|
|
| 2009-06-05 |
|
|
| 2009-06-01 |
I doubt that would justify a new download at this point, unless you're trying to do native Win32 builds and they're failing. |
|
| 2009-05-23 |
|
|
| 2009-05-16 |
|
|
| 2009-05-12 |
I've reposted all of the
Comanche 055 (Apollo 11 CM) page images, having processed them with
reduced contrast from previously. The page images are somewhat
less pretty than before, in that the backround color is darker and much
less uniform, but the text is more legible in the lower-left quadrants
of many of the pages. Although I've not updated the source-code
tarball, around half of the page images have been converted to
source-code files available in the subversion
repository. Work on conversion of Luminary 099 (Apollo LM)
page images to source code has not yet begun. |
|
| 2009-05-05 |
The hardcopy from which these images were taken is from the Charles Stark Draper Historical Collection, MIT Museum, Cambridge, MA. The digital scans were produced by Paul Fjeld. Many thanks to Debbie Douglas of the MIT Museum for having the great foresight to arrange for these images to be made available to us, and to Paul Fjeld for performing the dreary work of creating the digital page images! More on this later. |
|
| 2009-05-03 |
|
|
| 2009-05-02 |
The FreeBSD native build is now
working again, to the extent that I'm able to check it. The build
instructions for it have changed a little. |
|
| 2009-04-27 |
|
|
| 2009-04-21 |
The VirtualAGC main screen has been
reworked to take up less space. This is principally necessary on
screens which are 1024×768 and have a large dock or toolbar at
the top or bottom of the screen. However, I like the new layout
better anyway as it seems more logical to me. There is no
functional difference. |
|
| 2009-04-15 |
|
|
| 2009-04-12 |
|
|
| 2009-04-06 |
I have had reports of the ACA
(hand-controller) simulation not working on some versions of Mac OS X,
so I have made a change. Instead of always using the yaACA3 simulation program (which
superceded the earlier yaACA
simulation program for snapshots 20090331 and later), the VirtualAGC GUI front-end now allows
for using yaACA and yaACA3 somewhat
interchangeably. Basically, it will use yaACA3 unless it notices that yaACA has been configured, and then
it will use yaACA
instead. The yaACA
program has also been tricked up similarly to the yaACA3 program in that it now
automatically saves its joystick-related switches to a configuration
file, so that they become the defaults at the next run. Read about it in detail
if you have experienced a non-functional joystick. (And don't
send me any jokes about that, please!) |
|
| 2009-04-05 |
I fixed the FreeBSD bugs
mentioned yesterday, and am now willing to say that Virtual AGC works
in FreeBSD. Instructions for building from source on FreeBSD have
been added to the download page.
I'd
be
lying,
though,
if
I
said
it
was
thoroughly
tested.
Unfortunately,
I
only
have
FreeBSD
running
in
a
virtual
machine,
and
the
marriage
of
FreeBSD
(PC-BSD)
to VirtualBox has not proved a happy
one for me, so my ability to test the the FreeBSD installation is very
crude. When I say Virtual AGC "works", I mean that I can run VirtualAGC, that I can start the
simulation, that I can put in verbs and nouns on the DSKY and it does
what I expect it to do, that I can see telemetry downlinks, and that I
can perform digital uplinks. If anyone wants to send me more
data, I'd be happy to see it, but I've done all I expect to do on the
FreeBSD side in the absence of feedback. |
|
| 2009-04-04 |
As far as substantive changes are concerned, I fixed a couple of makefile bugs which prevented Virtual AGC from building on FreeBSD. It now builds—and works, as far as basic functionality is concerned—but fails after certain directory manipulations are made, so it still needs some tweaking. However, I've added some build instructions for it on the download page. |
|
| 2009-03-31 |
As far as the website itself is
concerned, various people have sent me interesting and useful stuff
which I've added. I won't detail those things here, except to say
"Thank you!" to Dimitris Vitoris, Mirko Mattioli, and Onno
Hommes. Some important corrections
have been made to material on the the website itself, thanks to
Fabrizio Bernardini:
|
|
| 2009-03-17 |
yaDSKY
and yaDEDA have been
superceded by rewritten replacements yaDSKY2
and yaDEDA2 to improve
portability and distributability. Moreover, there is a completely
new yaTelemetry program to
replace the Digital-Downlink-monitoring functionality previously
kludged into yaDSKY (but
missing from yaDSKY2). |
|
| 2009-03-05 |
There's now a GUI front-end that
conveniently ties all of the Virtual AGC bits and pieces together that
were previously provided only incompletely and relatively
unsatisfactorily through a few very simplified command-line
scripts. I call this front-end program VirtualAGC. This program will
additionally have convenient installers for Linux, Windows, and Mac OS
X, which is
something which has been lacking up to now. At the same time,
I've fixed the problem that (as previously installed by Virtual AGC)
Stephan Hotto's LM_Simulator
module didn't have its various very-useful help screens. |
|
| 2009-03-01 |
The current development snapshot
fixes a bug which has existed since 2007-03-16 in the development
snapshots, but not in any of the binary downloads (since I've not
posted new versions of the binary downloads in that time period).
The bug, very simply, is that the LM_Simulator
module would abort if used in a CM simulation, even though it would
work in an LM simulation. The upshot of this is that if you tried
to start a CM simulation using any of the provided scripts (SimColossus249, SimColossus249_lite, SimArtemis072, or SimArtemis072_lite) then the
simulation would abort with an error message. I suspect that some
folks have complained to me about this and that I blew them off with an
explanation that there was something misconfigured about their
computers. If you complained and I ignored it, I apologize. Development of Virtual AGC has been on hold for a while, but I expect it to pick up again soon, with a vengeance. (For everyone who has sent me stuff with which to update the website and it has seemingly fallen into a black hole, I'll finally be adding your updates!) So watch this space. |
| 2008-02-14 |
Added a nifty photo Alessandro
Cinquemani has sent in of the Pultorak-style AGC/DSKY he is
constructing. |
| 2008-02-05 |
I've completed all the
subassemblies, which are now in their final form except for the DSKY. I
plan to make it a 3 PCB unit; 1 PCB for the mainboard/keyboard, 1 for
the LED display/caution & status lights and 1 for the
interface daughterboard.That's necessary because the keys I'll use (RS
336-191) are a little tall and I'll
have to elevate the displays. Also I plan to design my DSKY in such a way that it can be used in any
revision I plan to make by just
exchanging it's I/O daughterboard. You'll
find
that
there
are 5
new
elements
in
this
revision:
The MCAs are the
separated monitoring busses and control switches from each A0 module.
The MC is the main power distribution hub,
panel illumination controller
and using it you can power down any or all the monitoring panels at
will.
I have attached together with
the A1 schematics the following:
As before these schematics
should NOT be considered final and may contain errors. Looking forward
for your comments and suggestions!
|
| 2008-01-13 |
|
| 2008-01-03 |
|
| 2007-12-28 |
|
| 2007-04-25 |
|
| 2007-04-22 |
Stephan Hotto has sent version
1.0 of LM_Simulator, both in
source code and in the Windows "stand-alone" executable version, with
the
following notes:
|
| 2007-04-17 |
|
| 2007-04-16 |
I have found a backdoor into the
"archived"
HRST
website, and modified the links page accordingly.
However, I'll still continue to host the documents, because it gives me
a chance to improve them. |
| 2007-04-15 |
As mentioned earlier, MIT's
Dibner Institute, whose website (HRST) formerly hosted most of the
scans of historical AGC documents on which Virtual AGC is based, has
closed and its website is gone. I have decided to begin hosting the
documents formerly available from HRST, with improvements to some of
them, here at Virtual AGC. Some of the
documents---particularly the assembly listings---have been improved
from the versions formerly at HRST; others will be improved in the
future. It may take a while to find and
fix all of the now-broken links, so if you find any of them let me know. |
| 2007-04-13 |
Okay ... I haven't updated the
development snapshot or website since dev snapshot 20060110, mostly
from laziness. Agood thing, too, because since then a very nasty
bug had
been introduced into yaAGC,
but I couldn't find it or fix
it because I was falsely blaming the symptoms on the LM_Simulator changes. Hooray
for laziness! But yaAGC
is now fixed. If you're iffy about installing the new dev snapshot, here's the executive summary of changes since 20060110:
|
| 2007-03-17 |
Busy Stephan has sent still
another LM_Simulator update,
as follows:
|
| 2007-03-16 |
Stephan has sent another LM_Simulator update, which he
describes as follows: Now the FDAI shows the correct
8-ball angles - currently with a limitation to:
Yaw: 0Deg ±90Deg
Pitch: 0Deg ±90Deg Roll: Anyway limited by the Gimbal Lock condition at 0Deg ±85Deg The functionality of the DAP and the dynamic model as well as the displayed FDAI angles can be verified by using the "Crew Defined Maneuver Routine V49". By initiating this routine you must provide the desired destination IMU Gimbal Angles, subsequently the AGC presents you with the associated FDAI angles it steers the LM to (please refer to the Tutorial). Because of the above mentioned limitation those FDAI angles should be in the defined range. [By the "tutorial", Stephan means the Contributed/LM_Simulator/tutorial.txt, which you'll get by downloading the development snapshot of Virtual AGC.] The CPU load maximum lies around 20% on an Intel Core Duo 2.13GHz processor. |
| 2007-03-05 |
Here's a sort of omnibus update
that takes into account stuff people have been sending me over the last
year or so. I apologize to anybody who sent me something I've
forgotten about!
Additionally, Stephan tells us:
The DAP is now stable around all
axes and even the "DAP V49 Crew Defined Maneuver" routine steers the LM
exactly into the right orientation.
There was a major bug in the IMU coordination transformation that caused the DAP instabilities. Furthermore, to handle single RCS jet events it was necessary to transform the U,V jet system into the P,Q,R pilot axes. The whole dynamical model of the LM is now based on the equations used for the DAP state estimator. This approach makes the model very precise and comparable to the real thing. To assure the right AGC initialization it is necessary to stick to the following pre-conditions and steps:
|
| 2006-02-26 |
|
|
| 2006-01-10 |
Have added the
SimArtemis072_lite startup script, have tried out Artemis072 in Win32,
and have hopefully updated all of the web-pages to properly reference
Artemis072.
Unfortunately, it may be quite a long time before the source code for Artemis072 is available, so we'll just have to live with having only the executable for a while. |
|
| 2006-01-09 |
All data entry and proofing for
the Artemis 072 (Colossus 3) executable has been completed, and
some startup scripts have been added for it. I haven't yet made
the necessary mods to the webpages yet to explain how to use it, nor
have I gotten the chance yet to try it in Windows. Tomorrow,
hopefully. In the meantime: Start the simulation using the
script "SimArtemis072". (I'm really only posting it today just in
case I happen to die overnight, which I presume is unlikely.) |
| 2005-12-24 |
I now have in hand the complete
listing of the Colossus 3 (Artemis 072) executable used in the CM of
Apollo 15-17. Thanks to D. Thrust for providing the scans!
It will take me some time to convert it into machine-readable form so
that it can be executed by the AGC simulator, but I will proceed with
it as quickly as possible. I don't yet have much of the Colossus
3 assembly-language source code, but hopefully it will make an
appearance as well, in due time. |
||||||||||||||||
| 2005-11-06 |
Well, I seem to have hit the
jackpot this week, in terms of getting into contact with some of the
original AGC programmers. Eileen Hughes has sent me the first
names of several programmers---including her own---while Jonathan
Addelston has written to tell me that I was spelling his name
wrong. Sorry about that! The acknowledgement list on the
home page has been corrected. |
||||||||||||||||
| 2005-10-29 |
|
||||||||||||||||
| 2005-10-17 |
I've been holding onto some
changes for a while, so let's hope I manage to remember them all.
The reason I was holding on is that I have seen some segfaults in yaAGC when manipulating the
RHC. However, now that I am trying to fix them, they've magically
disappeared. (If you experience such problems, please send me the
files called "core" and "LM.core". Thanks!)
|
||||||||||||||||
| 2005-10-05 |
|
||||||||||||||||
| 2005-10-04 |
|
||||||||||||||||
| 2005-10-03 |
|
||||||||||||||||
| 2005-09-25 |
|
||||||||||||||||
| 2005-09-20 |
|
||||||||||||||||
| 2005-09-14 |
|
||||||||||||||||
| 2005-09-09 |
|
||||||||||||||||
| 2005-08-28 |
|
||||||||||||||||
| 2005-08-23 |
|
||||||||||||||||
| 2005-08-22 |
|
||||||||||||||||
| 2005-08-21 |
|
||||||||||||||||
| 2005-08-20 |
|
||||||||||||||||
| 2005-08-17 |
|
||||||||||||||||
| 2005-08-15 |
|
||||||||||||||||
| 2005-08-14 |
|
||||||||||||||||
| 2005-08-13 |
|
||||||||||||||||
| 2005-08-06 |
|
||||||||||||||||
| 2005-08-04 |
|
||||||||||||||||
| 2005-08-02 |
|
||||||||||||||||
| 2005-08-01 |
|
||||||||||||||||
| 2005-07-31 |
|
||||||||||||||||
| 2005-07-30 |
|
||||||||||||||||
| 2005-07-28 |
|
||||||||||||||||
| 2005-07-19 |
|
||||||||||||||||
| 2005-07-17 |
|
||||||||||||||||
| 2005-07-16 |
|
||||||||||||||||
| 2005-07-13 |
The downside is that you can no
longer use any
command-line parameters with the batch files. I've tried to make
intelligent choices as to which command-line switches you might want,
but if I'm wrong you need to edit one or another of the files
SimLuminary131.xeq, SimLuminary131_lite.xeq, SimColossus249.xeq, or
SimColossus249_lite.xeq. (These ".xeq" files contain the lists of
files, along with their command-line parameters, that are run by
WinAGC.exe.) Even then, there are some things you can't
accomplish, such as running yaAGC
or yaAGC in --debug
mode. If you want to do that, I'd suggest setting the environment
variable NOWINAGC=yes before running the startup scripts, as this will
restore the batch files to their pre-WinAGC glory.
Another downside is that that Allegro and Tcl/Tk are now really requirements rather than options, although I've not had a chance to update the instructions yet. The reason is that the startup scripts will abort if yaACA and LM_Simulator cannot be run, rather than ignoring it. (I must say, though, that you really want to run both of these things, although admittedly yaACA isn't of much use without a "3D game controller" --- i.e., a joystick. Therefore, buy a joystick.) If you absolutely don't want to run these programs, or cannot for some reason, edit the appropriate ".xeq" file and prefix the yaACA and/or LM_Simulator lines by the character '#' (without quotes, of course).
|
||||||||||||||||
| 2005-07-11 |
|
||||||||||||||||
| 2005-07-10 |
|
||||||||||||||||
| 2005-07-09 |
|
||||||||||||||||
| 2005-07-07 |
|
||||||||||||||||
| 2005-07-06 |
|
||||||||||||||||
| 2005-07-05 |
The simulation reaches the
correct Delta Velocity of about 2400m/s (about 8000ft/s) after using
the complete fuel. The start values I'm using are obtained from
the Lunar Module Wikipidia page and the pad load file.
|
||||||||||||||||
| 2005-07-04 |
|
||||||||||||||||
| 2005-07-03 |
|
||||||||||||||||
| 2005-07-02 |
|
||||||||||||||||
| 2005-07-01 |
|
||||||||||||||||
| 2005-06-30 |
|
||||||||||||||||
| 2005-06-29 |
Well, I now like yaDSKY's ability to display downlink
lists so much that I've split off that ability from the "--test-uplink"
command-line switch, and added it to a new "--test-downlink"
command-line switch. In fact, "--test-downlink" is used by
default in the SimLuminary131
and SimColossus249 startup
scripts. Of course, the ability to completely display all
downlink lists isn't quite available. However, the erasable dump
downlist is still available, and the AGS initialization/update downlist
is complete. |
||||||||||||||||
| 2005-06-28 |
|
||||||||||||||||
| 2005-06-27 |
|
||||||||||||||||
| 2005-06-26 |
|
||||||||||||||||
| 2005-06-25 |
|
||||||||||||||||
| 2005-06-24 |
yaAGS:
Finally
have
a
sensible
DVP
instruction, I think. (A rational person could still disagree
with this assessment, I suppose, so you're still invited to examine the
DVP code in
aea_engine.c to offer your opinion.) However, I've noticed some
anomalous
behavior that I didn't notice before, in that the DEDA will freeze up,
or readouts will occur that I can't figure out any way to stop, but it
doesn't seem to have anything particularly to do with the DVP instruction.
Typically, this will be readout of address 555, which begins
spontaneously, and which I can't turn off. |
||||||||||||||||
| 2005-06-23 |
Have now worked out the details
needed for the digital uplink, and have described them in a new
"Fictitious I/O Channel" section on the developer page. However,
I haven't yet implemented it in yaAGC.
(No
new
new
yaAGC features are
needed for the digital downlink, though I admit I'm unclear yet on the
mechanism used to transfer state vectors between the CMC and LGC.) |
||||||||||||||||
| 2005-06-19 |
|
||||||||||||||||
| 2005-06-17 |
|
||||||||||||||||
| 2005-06-16 |
yaAGC:
Implemented,
I
hope,
the
behavior
of
counter-registers
CDUXCMD,
CDUYCMD,
CDUZCMD
(and
associated
drive-enable
bits
in
output
channel
14)
needed
for
continuing
development
of
the
IMU
---
in
this case, of
IMU coarse alignment. Modified the description on the developer
page of the description of channel 14 needed to use this feature, as
well as the description of the CDUxCMD registers in the
assembly-language manual page. (Thanks to Stephan Hotto and
Markus Joachim for pointing out this problem and describing the fixes.) |
||||||||||||||||
| 2005-06-15 |
In yaAGS, I've implemented the DVP instruction according to an
algorithm sent to me by Julian Webb. (Thanks, Julian!) I'm
bound to say that there are a number of things that don't make sense
about it to me, but it does manage to pass the self-test (which no
algorithm I invented was able to do). Anyone who feels competent
to do so is invited to examine the DVP instruction in the function
aea_engine of the
source file aea_engine.c, and give me your insights on the
matter. Otherwise,
though, yaAGS now
passes the built-in self-test (see, for example, p. 115 of Flight
Program 8), and may therefore be cautiously considered as
working. Probably
there are plenty of problems with it that will surface slowly in the
coming months.
|
||||||||||||||||
| 2005-06-14 |
|
||||||||||||||||
| 2005-06-12 |
|
||||||||||||||||
| 2005-06-11 |
|
||||||||||||||||
| 2005-06-09 |
Lots of work on yaAGS, but mainly in the form of
improving debugging (fixing i/o-channel addresses, editing of memory
locations, backtraces, etc.). Somehow yaAGS executes an undefined
instruction in displaying to the DEDA, but I haven't figured out yet
how that happens. |
||||||||||||||||
| 2005-06-08 |
"Finished" coding yaAGS. It doesn't work, of
course. I'll start figuring out why tomorrow. |
||||||||||||||||
| 2005-06-07 |
Fixes:
|
||||||||||||||||
| 2005-06-06 |
Bug
Fixes:
|
||||||||||||||||
| 2005-06-05 |
|
||||||||||||||||
| 2005-06-04 |
|
||||||||||||||||
| 2005-06-03 |
On the links page, updated the status of the integration of Virtual AGC with the Orbiter simulator again, after receiving some additional info from Markus Joachim. | ||||||||||||||||
| 2005-06-02 |
|
||||||||||||||||
| 2005-05-31 |
|
||||||||||||||||
| 2005-05-30 |
|
||||||||||||||||
| 2005-05-29 |
|
||||||||||||||||
| 2005-05-28 |
|
||||||||||||||||
| 2005-05-26 |
Allan Klumpp has told me that
there is a descrepancy between the the software version quoted on the Luminary page for Apollo 15-17 vs. his
personal recollections and in-hand documentation. I've added
notes to that effect, along with disclaimers on the Colossus and Luminary pages to indicate that I'm
not certain how accurate the software configuration information is. |
||||||||||||||||
| 2005-05-24 |
On the yaAGS page, added a link to the
complete LM/AGS Design Survey document at klabs.org, whereas only the
block diagrams from that doc are available locally here on the Virtual
AGC site. |
||||||||||||||||
| 2005-05-23 |
Minor corrections on developer
and language-manual pages. And a few additions to the faq page. |
||||||||||||||||
| 2005-05-21 |
Finished up the API
documentation. Probably still needs a little work, such as
verifying the sample programs listed, but looks pretty good. |
||||||||||||||||
| 2005-05-18 | Finally began filling in some of
the Virtual AGC Library API stuff on the developer's page since, I was
surprised to find, some people are actually interested in it.
Still needs a lot of work,
but does actually contain some useful information. |
||||||||||||||||
| 2005-05-17 |
The developer
page now contains
a pretty complete discription of the extensions to the socket protocol
which will be needed to implement yaAGS, yaDEDA, and peripherals, and
to allow interaction of yaAGS with yaAGC. Communication of yaAGC
with yaDSKY and other projected peripherals remains unchanged from
before. I was afraid there would be a lot more fuss and muss with
this than there really was. |
||||||||||||||||
| 2005-05-15 |
PR #30 (socket interface to
"unprogrammed" counter sequences completely inoperative) has been fixed
in yaAGC, and a special mode
(--debug-counter-mode) has been added to yaDSKY so that there's a way for
debugging purposes of sending known counter-commands to yaAGC and observing the
effect. |
||||||||||||||||
| 2005-05-14 |
|
||||||||||||||||
| 2005-05-09 |
I discovered that while
yesterday's
Linux binaries do work on a variety of systems (like SuSE 9.0 &
9.1, Ubuntu 5.04, and Fedora Core 1), they don't work on older systems
(like RedHat 7.3). With some luck, the Linux binaries I've put up
today will work on a wider variety of systems. |
||||||||||||||||
| 2005-05-08 |
There are now pre-built Virtual
AGC binaries for Linux on the download page. This has been a long
time coming ... which is a shame, since it turned out to be pretty easy
to create them. On the other hand, I don't guarantee the binaries
work on every platform, though they've worked so far on all of the
platforms I've tried. Your mileage may vary. |
||||||||||||||||
| 2005-04-30 |
A lot of changes related to PR
#28 have been made. These changes relate only to building the
program on Win32, which was broken. Various compiler warnings
under Linux have also been fixed, but there's no actual functional
change. |
||||||||||||||||
| 2005-02-27 |
At the request of Markus
Joachim, I have added a "special exception" (as allowed/required by the
GPL) to the license of the source files yaAGC/yaAGC/*.[ch], allowing
linkage to the non-GPL'd Orbiter SDK libraries. This has been
done to allow distribution of plug-ins relying on yaAGC source code for the Orbiter
spacecraft simulator. |
||||||||||||||||
| 2005-02-13 |
Added the AGS Performance and
Interface Specifications document to the AGS page.
(Thanks
to
John
Pultorak
and
Davis
Peticolas.)
We've
decided
not
to
provide
one
of
the
docs
that
was
originally
listed,
so
|
||||||||||||||||
| 2005-01-31 |
In yaAGC, managed to get rid of the
annoying effect (which appeared only in Linux) whereby stopping yaAGC before stopping yaDSKY resulted in an
operating-system timeout of a couple of minutes before the port could
be reused (and hence before the simulation could be restarted). |
||||||||||||||||
| 2005-01-29 |
The AGS Flight Equations
document scan has been added to the AGS page. |
||||||||||||||||
| 2005-01-27 | The Mac OS X build instructions
have been simplified a little, and completely tested on a pristine Mac
OS X 10.2.8 system. |
||||||||||||||||
| 2005-01-26 |
On the links page, there are now
some scans of tables
relating to spacecraft interior and exterior
lighting, thanks to Paul Fjeld. |
||||||||||||||||
| 2005-01-25 |
I finally have Virtual AGC
running on pre-Panther versions of Mac OS X -- or at least I have it
running on Jaguar. The instructions are on the download page. My only problem, it
turns out, was finding the right version of X11. |
||||||||||||||||
| 2005-01-24 |
|
||||||||||||||||
| 2005-01-23 |
|
||||||||||||||||
| 2005-01-22 |
The scan of the AGS FP6 Operating Manual has been added,
as usual thanks to John Pultorak and Davis Peticolas. |
||||||||||||||||
| 2005-01-19 |
|
||||||||||||||||
| 2005-01-18 |
|
||||||||||||||||
| 2005-01-17 |
Data entry for AGS Flight
Program 8 source code is complete, but no debugging has been done on it
yet. |
||||||||||||||||
| 2005-01-16 |
|
||||||||||||||||
| 2005-01-15 |
|
||||||||||||||||
| 2005-1-13 |
yaLEMAP,
in
so
far
as
the
sample
code
is
concerned,
is
fully
working.
I
know
that
there
are
a
couple
of
things
appearing
in
the
flight
code
that
I haven't dealt
with yet, because they don't appear to be documented. |
||||||||||||||||
| 2005-01-12 |
Continued refinement of AGS page
text. The yaLEMAP
program is coming along nicely; it can produce a correct symbol table
and a partial assembly of the sample AGS program from the appendix of
the AGS programmer's manual. |
||||||||||||||||
| 2005-1-11 |
Paul Fjeld has supplied various
factual corrections and some amusing anecdotes for the AGS page.
Also, John Pultorak has scanned yet another of Davis Peticolas's
documents, the AGS
simulator user guide. There is a skeleton program now for the AGS
cross-assembler, yaLEMAP, but
it's not much yet. |
||||||||||||||||
| 2005-01-10 |
Thanks to Davis Peticolas and
John Pultorak, various
new AGS document scans
are available, including the complete assembly listing for Flight
Program 8 and the program specification for Flight Program 6 (Apollo
11). The utility program binLEMAP
for keying in AGS binaries
has also been added. The source code and binary (SampleCodeAGS.s
and SampleCodeAGS.binsource) for the
sample program in Appendix A of the AGS programmer's manual have been
added, but will only be of interest in wringing out the yaLEMAP cross-assembler, which
doesn't yet exist. |
||||||||||||||||
| 2005-01-09 |
Bunch of website changes,
related to the impending availability of AGS (Abort Guidance System)
material. In fact, the AGS programming-manual is now available on
the new "yaAGS et al." page, thanks to Davis
Peticolas and John
Pultorak. This page
and the Pultorak page have now been added to the title block, rather
than forcing you to find them on the links page. |
| 2004-12-30 |
Changed from Pultorak link (see item below) to a complete page. The page contains a lot of supplemental materials which John has sent me, but which you can't get out of his PDFs, such as the original CAD files from the schematic capture, source-code files which you don't need to cut-and-paste, a part list, and so on. | |
| 2004-12-19 | Added a link to John Pultorak's site
on the links page. (Adding a link
normally wouldn't be newsworthy, but the guy has spent 4 years building
his own Block I AGC and gives us the complete plans for it. Does
it get any better?) |
|
| 2004-11-06 |
Made available a lot of
replacement scans Gary Neff (thanks Gary!) has sent me for 50 garbled
pages in the MIT-hosted Colossus 249 assembly listing. You can
get these from the Colossus page.
These
will help to clean up a few holes in the Colossus source code, though
I've not yet made those fixes. (Fortunately, there are not many
such places.) Eventually I intend to merge Gary's scans with a
cleaned-up MIT-based scan, so that the scanned assembly listing will
become much more readable, though (again) I've not yet done so. |
|
| 2004-10-23 |
Fixed a website link on the Luminary page. (Thanks to
Christian Bucher for pointing out the error.) |
|
| 2004-10-21 |
Added some additional hints to
the Mac OS X build instructions, thanks to Greg Dunn. By the way, some folk have wondered why the pace of updates has dropped off. I'm a bit burned out and am taking a little rest. Don't worry, though, I'll snap back soon (I hope), especially if anybody finds an alternate version of Luminary or Colossus for me to work with. :-) |
|
| 2004-10-03 |
Drastically reduced the size of
some of the new scanned documents: Excerpts from CSM 112-114
System Handbook reduced from 120M to a "mere" 20M; LM 7 pad-loads
reduced from 5M to 1M. Sorry for the inconvenience to anybody
that downloaded them earlier. (Note that the earlier downloads
were grayscale rather than b&w, and therefore may be very slightly
more legible.) |
|
| 2004-10-02 |
Pages 30-50 of Hugh
Blair-Smith's "memo #9", covering AGC microcode have been provided in
text (as opposed to scanned) form on the links page. This
material has been typed and contributed by none other than Hugh
Blair-Smith himself! Several large schematic foldouts from the Apollo LM System Handbook for
Apollo 17 have been added also, Contributed by Fabrizio Bernardini. |
|
| 2004-10-01 |
The G&C section of the Apollo CSM System Handbook for
CSM-112 through CSM-114 has been added to the links page.
(Contributed by Fabrizio Bernardini.) |
|
| 2004-09-28 |
Additional docs added to the
links page. These include the LM-7 (Apollo 13) pad-loads -- i.e.,
the values for the AGC erasable memory. (Contributed by Paul
Fjeld.) |
|
| 2004-09-25 |
|
|
| 2004-09-23 |
yaUniverse:
Is
now
capable
of
numerically
integrating
the
motions
of
the
heavenly
bodies
and
spacecraft
under
gravitational
influences.
The
previous
concept
of
using
fully-tabulated
heavenly-body
ephemeris
data
for
the
heavenly bodies has now been discarded because of the large
downloads required, and hence the separate ephemeris downloads have
been removed from the download page. The greatly abbreviated
ephemeris files needed for testing and for determination of initial
positions and velocities of heavenly bodies are now included directly
in the development snapshot. |
|
| 2004-09-21 | Assembly-language manual:
Updated/added descriptions of various pseudo-ops. |
|
| 2004-09-16 |
yaACA:
The
proof-of-concept
now
builds
(and
hence
works)
in
Win32.
It
still
does
not
communicate
with
yaAGC. |
|
| 2004-09-15 |
yaACA:
Just
a
start.
More
of
a
proof-of-concept
that
a
hand-controller
can
be
used.
All
it
does
so
far
is
to
display
the
pitch,
yaw,
and
roll
axes
of the hand-controller, but at least it does it. I
haven't connected it to yaAGC
yet, and have only gotten it to work in Linux. |
|
| 2004-09-12 |
|
|
| 2004-09-11 |
The Win32 zipfile from 20040905
is corrupted. (Thanks to D. C. Shoemaker for pointing
this out.) I have now reverted to the 20040819 Win32 zipfile,
which is perfectly fine except that some now-known bugs in
Colossus249.bin have not been fixed. Download the development
snapshot to get a fully-correct version of Colossus. (I find
myself temporarily in the position of not being able to create a
zipfile. Sorry for the inconvenience.) |
|
| 2004-09-05 |
|
|
| 2004-09-04 |
|
|
| 2004-09-02 |
|
|
| 2004-09-01 |
|
|
| 2004-08-31 |
|
|
| 2004-08-30 |
|
|
| 2004-08-29 |
|
|
| 08/28/2004 |
|
|
| 08/27/2004 |
|
|
| 08/26/2004 |
Colossus249 source code: Source code through page 1037 (out of 1505) of the scan 1701.pdf is now available. | |
| 08/25/2004 |
Colossus249 source code: Source code through page 1011 (out of 1505) of the scan 1701.pdf is now available. | |
| 08/24/2004 |
|
|
| 08/23/2004 |
Colossus249 source code: Source code through page 951 (out of 1505) of the scan 1701.pdf is now available. | |
| 08/22/2004 |
|
|
| 08/21/2004 |
|
|
| 08/19/2004 |
|
|
| 08/18/2004 |
|
|
| 08/17/2004 |
|
|
| 08/16/2004 |
Colossus249 source code: Source code through page 746 (out of 1505) of the scan 1701.pdf is now available. | |
| 08/15/2004 |
|
|
| 08/14/2004 |
|
|
| 08/13/2004 |
|
|
| 08/12/2004 |
|
|
| 08/11/2004 |
|
|
| 08/10/2004 |
|
|
| 08/09/2004 |
|
|
| 08/08/2004 |
Colossus249 source code: Source code through page 289 (out of 1505) of the scan 1701.pdf is now available. | |
| 08/07/2004 |
|
|
| 08/06/2004 |
Colossus249 source code: Source code through page 167 (out of 1505) of the scan 1701.pdf is now available. | |
| 08/05/2004 |
Colossus249
source code: Source code through page 128 (out of 1505) of
the scan 1701.pdf is now available. |
|
| 08/02/2004 |
Colossus249
source code: Resumed data entry. Source code through page
36 (out of 1505) of the scan 1701.pdf is now available. |
|
| 08/01/2004 |
|
|
| 07/31/2004 |
|
|
| 07/30/2004 |
|
|
| 07/29/2004 |
|
|
| 07/28/2004 |
|
|
| 07/27/2004 |
|
|
| 07/26/2004 |
|
|
| 07/25/2004 |
|
|
| 07/23/2004 |
|
|
| 07/22/2004 |
|
|
| 07/21/2004 |
|
|
| 07/20/2004 |
yaAGC:
Apparently
I
had
forgotten
to
implement
yaAGC's
--port=N
command-line
switch, so it wasn't possible to run two instances of yaAGC simultaneouly --- or at least
not to run them and expect both to connect to peripherals. (After
daily snapshot posted.) |
|
| 07/20/2004 |
Found complementary errors in
bank 02 of Colossus249
binary. (Lest anybody be suspicious as to
how
complementary errors could have been found in both Colossus249 and in Luminary131 --- see
changes for 07/02/04 --- and wonder how many more
of them are lurking, I'd like to point out the following fact:
the banks in which complementary errors were found were happened to be
banks that I proofed before I honed my proofing technique. So
while I was somewhat surprised to find these errors, I was not
astounded to find them. All of the remaining banks were proofed
somewhat better.)
|
|
| 07/19/2004 |
|
|
| 07/19/2004 |
|
|
| 07/19/2004 |
Website changes: Lots of
screenshots added on the home page. Also, added Frank O'Brien's
amusing correction to the FAQ page. |
|
| 07/18/2004 |
The Win32 version now builds
again, and is known to run (at least on Windows XP). The system
is also known to work in a distributed configuration (with yaAGC on one computer, either Linux
or Win32, and yaDSKY on
another computer, either Linux or Win32). Minor cleanups of the
website have also been made. |
|
| 07/17/2004 |
|
|
| 07/16/2004 |
I've now had my first look at
the executable for Julian Webb's sim. In order to run the
validation suite on
Julian's sim, I've created a conversion program called webb2burkey-rope, in the Luminary131
directory, which converts the core-rope files between Julian's format
and mine. |
|
| 07/16/2004 |
There was major code rework done
in yaAGC, with the intention
of making the L register (and possibly other registers) 16 bits.
The new code seems to work exactly as well as the old code, in that
stuff which worked before still works, and stuff which didn't work
before still doesn't. The validation test does fail the D--LCHK
test now, as it ought to (considering the nature of the changes).
There are numerous comments concerning this change that will have to
propagate into the spec (language manual), but which haven't done so
yet. Also, the LOG command was added to --debug mode. |
|
| 07/14/2004 |
Added a new utility program
called ControlPulseSim, which
simulates some (but not all of the "control pulses" of the CPU ---
i.e., the microcode). From experimenting with this and from
discussions with Julian Webb, it seems probable that at least the L
register (and possibly all erasable memory) will have to be made
16-bits. This means that instructions like "CA L" and "CS L" don't presently work
properly when overflow is involved. ... Or else, it means that the description of control-pulses in Blair-Smith is not entirely accurate. It contradicts some later docs (like Smally), so this is possible. Must think more deeply .... |
|
| 07/13/2004 |
|
|
| 07/13/2004 |
|
|
| 07/12/2004 |
|
|
| 07/11/2004 |
|
|
| 07/10/2004 |
|
|
| 07/09/2004 |
|
|
| 07/08/2004 |
|
|
| 07/07/2004 |
|
|
| 07/06/2004 |
|
|
| 07/05/2004 |
|
|
| 07/04/2004 |
|
|
| 07/03/2004 |
|
|
| 07/02/2004 |
|
|
| 07/01/2004 |
yaAGC
--debug mode: Enlarged the number of allowed breakpoints
(watchpoints, patterns) dramatically (from 32 to 256), in order to
account for the possibility of trapping upon executing a lot of
different instruction-type patterns. Allowed for nesting FROMFILE
commands. Fixed it so that COREDUMP and FROMFILE don't
automatically convert filenames to upper case. Added scripts
(usable by FROMFILE) for every instruction type. Debug-mode
commands beginning with the character '#' are now discarded.
Added a lot more flags to the PATTERN command. |
|
| 06/30/2004 |
yaAGC
--debug mode: The concept of a "PATTERN" has now been
defined. This is like a breakpoint, but halts upon finding a
pattern in the instruction code rather than at an address.
The FROMFILE command has also been defined, in order to take debugging
commands from a file rather than the keyboard. I hope to
use these in conjunction with each other, to track down the remaining
broken instructions. |
|
| 06/13/2004 |
In yaAGC --debug mode, fixed the sign
of an octal value displayed by GETOCT. |
|
| 06/11/2004 |
The Win32 version compiles again
(at least on Windows 98), but the Win32 version of yaAGC is broken. |
|
| 06/09/2004 |
yaAGC:
Fixed
a
couple
of
problems
with
the
MP
instruction: If the
accumulator was +0 or -0 and the other factor was not, then neither the
accumulator nor the L register was updated to contain the
product. Also, if the factors were non-zero but of the opposite
sign, the product was messed up. |
|
| 06/08/2004 |
yaAGC:
Added
primitive
watchpoint
capability
to
the
--debug
mode. |
|
| 06/05/2004 |
Assembly-language manual
documentation tweaks (de-inhibiting of interrupts for GOJ or EDRUPT). yaAGC: Fixed TCAA, ZL, and ZQ instructions. Closed
up some conditions previously resulting in the zero register (7) being
overwritten with a non-zero value. yaDSKY: Digit ND2 wasn't being
displayed --- instead, it was overwriting ND1.
|
|
| 06/04/2004 |
yaAGC:
In
--debug
mode,
now
continues
to
try
to
service
client
(yaDSKY)
connects
or
disconnects
while waiting for keyboard input at the debugger. |
|
| 06/02/2004 |
yaAGC:
In
--debug
mode,
the
BREAK
and
DELETE
commands
didn't
work
properly
in
and
around
superbanks,
nor
did
the
breakpoints
themselves.
The
wrong
datatypes
(unsigned
vs.
signed)
were
used
for the EB, FB, and BB
registers in some places, causing the automatic mirroring of BB into
FB/EB to fail. The unused bits of FB, EB, and BB were removed
also. |
|
| 06/01/2004 |
yaAGC:
Fixed
indexed
instructions
for
negative
indices.
Also,
the
instruction
executing
after
RESUME
had been taken from the BBRUPT register, whereas it should have been
taken from BRUPT. |
|
| 05/31/2004 |
Instruction set in yaAGC now essentially rewritten
against v0.50. Still not fully working, but seems more convincing
than before. |
|
| 05/29/2004 |
Finished drafting everything I
want to say in the assembly-language manual about how machine code is
processed. This is v0.50. |
|
| 05/25/2004 |
Finished documenting all of the
"basic" instructions (as opposed to the "extracode" instructions),
except that a few of the implied-address-code instructions remain to be
done. |
|
| 05/24/2004 |
Continued documenting the AGC
instruction set. So far I have CCS, DAS, EXTEND, INHINT, RELINT,
RESUME, RETURN, TC, TCF, XLQ, XXALQ, but DAS still needs a few
loose ends tied up. |
|
| 05/23/2004 |
Continued updating counter
descriptions in the assembly-language manual. |
|
| 05/22/2004 |
Added quite a lot of text to the
assembly-language manual, under the CPU
architecture section. (I think I really need to finish most
of this manual before proceeding further with the emulator, because
it's simply too hard to keep trying to pull this info out of the
original Apollo docs. I need to pull the info from the Apollo
docs into my own definitive description of how the AGC works, so that
my definitive description can act as a set of requirements.) The send/recv protocol has also
been modified so that it includes "counter pulse" inputs to the CPU in
addition to i/o-channel data, and the assembly-language manual has a
new (but incomplete) section on the "unprogrammed sequences" associated
with these counter updates. |
|
| 05/20/2004 |
yaAGC:
Now
update
the
Z
register
to
c(Z)+1
prior
to
decoding
the
instruction. |
|
| 05/19/2004 |
yaAGC:
Made
major
fixes
to
the
AD
and
TS
instructions,
but
there's
still
a
lot
more
to
do
along
the
same
lines,
I
think. |
|
| 05/18/2004 |
yaAGC:
On
the
basis
of
some
comments
in
Luminary131
source
code,
output
channel
7
now
retains
bits
5-7
rather
than
just
bit
7.
Timers
TIME5
and
TIME6
and
their interrupts have now been implemented
(including the T6RUPT enable in output channel 013), though I don't
have enough info about these timers to know if I've done it
correctly. The interrupt for keypad input from the DSKY is now
implemented, and seems to work (and the ISR reads back the right code
from the input channel). (I haven't included the PRO key in it,
and don't
know if I'm supposed to.) |
|
| 05/18/2004 |
The 'snapshot' target in the
makefile has now been modified so that future development snapshots
will have datastamps in the names. From now on, new development
snapshots won't overwrite old ones. |
|
| 05/17/2004 |
yaAGC:
Added
INTOFF,
MASKON,
and
MASKOFF
commands
to
the
--debug
mode;
INTERRUPT
was
changed
to
INTON.
Implemented
timer
registers
SCALER1,
SCALER2,
TIME1,
TIME2,
TIME3,
and
TIME4,
as
well
as the
interrupts for TIME3 and TIME4. |
|
| 05/15/2004 |
yaAGC:
The
interrupt-vector/RESUME
mechanism
added
yesterday
was
a
little
over-zealous,
in
that
it
automatically
saved
and
restored
the
A,
L,
Q,
and
BB
registers
(in
ARUPT,
LRUPT,
QRUPT,
and BBRUPT); actually, the
interrupt-service code is supposed to do this if it wants it
done. My RESUME instruction was also broken, as it continued to
be decoded as INDEX 017. I've changed the --debug mode's
backtrace mechanism a little, in that a RESUME instruction removes all
of the backtrace-table entries for the ISR. (Otherwise, the
backtrace table would become completely full with ISR stuff, and we'd
never be able to use backtraces to debug non-interrupt code. |
|
| 05/14/2004 |
yaAGC:
Many
instructions
(particularly
DTCB
and
DTCF)
which
arithmetically
modified
the
Z
register
were
broken.
(I'm
not
sure
they're
all
fixed
now,
but
a
lot
of
them
are.)
The interrupt mechanism has
now been implemented, though no events have yet been configured to
trigger interrupts. The --debug mode now has the commands
INTERRUPTS and INTERRUPT to (respectively) view the interrupt-request
flags and to set an interrupt-request flag. The BACKTRACES
command also accounts for branches due to interrupts. |
|
| 05/14/2004 |
The 'configure' script now
allows the command-line switches "--help" and "--prefix", so that
installation can be done to any directory. |
|
| 05/13/2004 |
yaAGC:
Fixed
addressing
of
superbanks.
Fixed
the
--debug
mode
EDIT
command,
which
I
apparently
broke
yesterday.
The
emulation
actually
manages
to
get
to
the
AGC
self-check
code
now,
though it
doesn't seem to work right. |
|
| 05/12/2004 |
Primitive backtracing
ability added to yaAGC --debug
mode. |
|
| 05/10/2004 |
(After 20040510 snapshot.)
Fixed synchronization of BB, FB, and EB registers in --debug
editing. Also fixed faulty display in --debug of addresses in
superbanks. |
|
| 05/10/2004 |
Various issues related to the
virtual i/o channels were fixed: yaAGC's
handling
of
i/o
channels
was
incorrect,
in
that
it
internally
used
the
wrong
numeric
format
for
them,
so
none
of
them
worked
properly;
moreover,
while
yaAGC read the
virtual input port, it never actually wrote to the virtual output port
(except in --debug-dsky mode). As a separate issue, both yaAGC's and yaDSKY's handling of the PRO key was
wrong, in that the wrong bitflag was used for it. It looks like
i/o channels are now handled correctly, not only in normal mode, but in
--debug mode and in --debug-dsky mode. In experimenting with
this, I noticed that it is impossible in --debug mode to ever find the
PRO key pressed by checking "edit c32", because the PRO key sets this
bit when the yaDSKY key is
pressed, and then clears the bit when released. Therefore, using
"edit c32" will always find the bitflag associated with PRO
cleared. But you can see that it works if you debug yaAGC itself with gdb. |
|
| 05/09/2004 |
yaAGC's
--debug
mode
now
has
a
command
("getoct")
for
converting
numeric
values
to/from
the
AGC's
native
format. |
|
| 05/08/2004 |
Made various changes to make the
--debug mode of yaAGC easier:
|
|
| 05/06/2004 |
'make install' now copies *.ini,
Luminary131.bin, and Colossus249.bin to the installation directory
(which is hard-coded as /usr/local/bin, so it's not totally
perfect). Meanwhile, yaAGC
and yaDSKY will now look in
the installation directory for files specified with the --cfg and
--core switches, if not found in the current directory. (These
suggestions are due to Christian Bucher.) Also, yaAGC had not been displaying error
messages when the file for --cfg wasn't found, and this has been
corrected. The instruction "DXCH L", which is not unambiguously
defined by the docs, has changed in a way that conforms to comments in
the Luminary131 source. (Refer to address 33,03514, p.
888.) Fixed a potential divide-by-0 in the DV instruction, but my
impression is that my DV instruction right now is completely wrong
anyhow. |
|
| 05/05/2004 |
Continued working on yaAGC. Some fixes to INDEX, to
CCS A, and to CCS with comparison values of -1. Added S and N as
synonyms for STEP and NEXT in the debugger. |
|
| 05/04/2004 |
Continued working on yaAGC. Fixed some bugs in AD,
DCA, and CS. |
|
| 05/01/2004 |
Fixed problem reports 3, 4, and
5. Thanks to Christian Bucher for pointing out the problems. |
|
| 04/29/2004 |
Lot of links broken.
Thanks to Christian Bucher for pointing this out. Hopefully I got
them all. |
|
| 01/02/2004 |
More CDROM-only NARA-Southwest
finding-aids links. |
|
| 01/01/2004 |
Added a bunch of CDROM-only
links for NARA-Southwest finding-aids I've created. |
| 12/30/2003 |
Added scans of Skylab and
Apollo-Soyuz training "data cards", and the report The Apollo 11 Adventure, to the
links page. Various corrections to the web pages as well. |
| 12/25/2003 |
The Luminary 1C (Rev. 131) GSOP document
is now complete and online---about 2300 pages, 45M. Merry
Christmas! |
| 12/22/2003 |
The Colossus 1A (Rev. 249) "guidance
system operation plan"
(GSOP) document is now complete---and about 1840 pages, 43M in size. |
| 12/20/2003 |
Changed the documents mentioned
in the item below to PDFs (rather than TIFFs), and added section 3 and
half of section 4 to the Colossus
"operations plan". |
| 12/19/2003 |
On the links page, I've begun adding scans of documentation not available elsewhere on the Internet, or else previously available only in a corrupted form. So far, I've added multi-page TIFFs of the AGC4 Basic Training Manual, the Preliminary MOD 3C Programmers Manual, and sections 1 and 2 of the Guidance System Operations Plan for Manned CM Earth Orbital and Lunar Missions Using Program Colossus 1 (Rev. 237) and Program Colossus 1A (Rev. 249). |
| 12/01/2003 |
Mr. Gary Neff has provided some
scans of a page in Luminary
131 and two pages in Colossus
249 which had previously provided obstacles to validating the Luminary source code and the Colossus core-rope image. The
small amount of previously-missing Luminary
source code has been added to the file P20-P25.s. |
| 11/30/2003 |
For yaAGC debug-mode, have added the
ability to interactively halt execution, in Linux. I don't know
if this works in *BSD or in MacOS X, but I know that it doesn't work in
Win32. |
| 11/29/2003 |
yaAGC
now supports all instructions; however, it is still only minimally
debugged. Erasable memory and i/o-channel space now overlap
properly. The --debug mode has now been beefed up with a
core-dump option for erasable memory and i/o channels, so that
execution of the AGC program can be later resumed at a specific
point. Have now written the memory-map section for the
assembly-language manual. |
| 11/28/2003 |
Lots and lots of improvements to
yaAGC: Many
more instructions implemented, bugs fixed, more debugging commands
added. Still not really working yet, though. A detailed
explanation of the new debugging mode has been added to the yaAGC page. |
| 11/26/2003 |
Resumed work on yaAGC. The CPU timing has now
been corrected (previously it just ran as fast as it could go).
Added a primitive debugging mode in which you can look at the AGC
registers, single-step through the AGC code, see disassembled AGC
instructions, etc. |
| 11/25/2003 |
The Colossus 249 binary is now
completely reconstructed, and presumably ready for use! (I.e.,
whenever yaAGC is actually
ready.) |
| 11/23/2003 |
Colossus249
binary: All banks are now completely proofed.
However: Because the bugger word for bank 35 was missing from the
PDF, I've constructed the bugger word on the assumption that the rest
of my proofed data is correct. Also, bank 36 requires more
demanding reconstruction (at location 36,2734), which I've not yet
completed. |
| 11/22/2003 |
Colossus249
binary: Bank 43 (octal) has now been proofed. Banks 35-42
have all been through a first-proof, but none of them are error-free
yet. I've invented a technique (described in
Colossus249.binsource) through which it may be possible to make bank 36
error-free, which has previously been thought impossible without
additional scans (see bug report #1). |
| 11/18/2003 |
Colossus249 binary: Bank 34 (octal) now proofed. |
| 11/17/2003 |
Colossus249 binary: Bank 32,33 (octal) now proofed. |
| 11/16/2003 |
Colossus249 binary: Bank 27,30,31 (octal) now proofed. |
| 11/15/2003 |
Colossus249 binary: Banks 23,24,25,26 (octal) now proofed. |
| 11/14/2003 |
Colossus249 binary: Bank 22 (octal) now proofed. |
| 11/13/2003 |
Colossus249 binary: Banks 20,21 (octal) now proofed. |
| 11/12/2003 |
Colossus249 binary: Banks 16,17 (octal) now proofed. |
| 11/10/2003 |
Colossus249 binary: Bank 15 (octal) now proofed. |
| 11/09/2003 |
Colossus249 binary: Bank 14 (octal) now proofed. |
| 11/08/2003 |
Added an Acknowledgements section to the home page. Colossus249 binary: Bank 13 (octal) now proofed. |
| 11/05/2003 |
Colossus249 binary: Bank 12 (octal) now proofed. |
| 11/04/2003 |
Colossus249 binary: Banks 10,11 (octal) now proofed. |
| 11/03/2003 |
Colossus249
binary: Bank 7 now proofed. |
| 11/02/2003 |
Colossus249
binary: Banks 4,5,6 now proofed. Added the CheckDec
utility program. There's now a Makefile under Luminary131, which
builds Oct2Bin, CheckDec, and the Luminary131 binary. |
| 11/01/2003 |
Colossus249
binary: Banks 0,1 now proofed. |
| 10/31/2003 |
Fixed a bunch of web links. |
| 10/29/2003 |
Colossus249
binary: Bank 3 now proofed. |
| 10/28/2003 |
Colossus249
binary: Now complete, but not proofed. There are
unrecoverable problems with it, not solvable by proofing, in that the
"bugger word" from bank 35 and the values at addresses 2634 and 2734 of
bank 36 are unknown. |
| 10/26/2003 |
Colossus249 binary: Banks 7-32 (octal) are now in place, but not proofed. |
| 10/25/2003 |
Colossus249
binary: Banks 0-6 are now in place, but only bank 2 has been
proofed. |
| 10/22/2003 |
Instead of providing separate
instructions and methods for building each of the executables, a single
set of scripts/makefiles/instructions is now provided to build/install
all of the executables as a single batch job. |
| 10/21/2003 |
yaDSKY
and yaAGC now actually work
the same in Win32 as in Linux (and, indeed, can be mixed-and-matched). |
| 10/20/2003 |
yaDSKY
and yaAGC now build in Win32,
and run. (However, the socket communications don't work well
enough for them to be fully operational.) |
| 10/19/2003 |
yaDSKY
indicator lights have been modified, so that instead of all being amber
when lit, they are mostly white when lit instead. (Only TEMP,
GIMBAL LOCK, PROG, RESTART, TRACKER, ALT, and VEL are amber now.)
A lot of descriptive text has been added to the website in the form of
a "howto" for building glade/gtk+ programs under Windows, with
the idea of eventually having Win32 versions of yaDSKY and yaTelemetry, and possibly Mac OS X
versions at some point. |
| 09/07/2003 |
Oct2Bin
has been changed to make it a lot clearer whether messages are errors
or just information. |
| 09/06/2003 |
Luminary131
binary (Luminary131.bin and/or Luminary131.binsource) now completely
proofed and (presumably) ready for action! Of course, until yaAGC (or yaYUL) is ready, it's not good for
much. |
| 09/04/2003 |
29 (of 36) memory banks of the Luminary131 binary now proofed. |
| 09/03/2003 |
26 (of 36) memory banks of the Luminary131 binary now proofed. |
| 09/02/2003 | 21 (of 36) memory banks of the Luminary131 binary now proofed. |
| 09/01/2003 |
Now have the complete Luminary131 binary, but only the
first 15 banks (out of a total of 36) are proofed. The
other banks are known to contain errors. |
| 08/27/2003 |
Now have some (small) chunks of Luminary131 and Colossus249 binary. Download
page completely rewritten, so that now there are some sensible
downloads. |
| 08/20/2003 |
To the best of my knowledge, yaDSKY is now fully
operational. Not all of the output-channel bits controlling the
indicator lamps have been identified yet, but these will be added to
configuration files LM.ini, CM.ini, CM0.ini (which are complete except
for this information) rather than to yaDSKY
itself. The "--debug-dsky" mode has been added to yaAGC to allow testing of yaDSKY. |
| 08/16/2003 |
The web pages are now up-to-date
with all of the info I've systematized from the original Apollo docs. |
| 08/10/2003 |
Resuming development ....
I spent an enormous amount of effort on the project for the first
couple of months, but completely burned myself out before getting any
results that I felt like inflicting on the geek community, and have had
to veg out since then to recover. At this point, I have the
following:
|
| 04/04/2003 |
Got the idea for this project, whilst watching the movie Apollo 13. |
