; /+ / / Usage / / isupper(c); / int c; / / Description / / Return 1 if c is an Upper-case alphabetic character, 0 otherwise. / / Bugs / /- / .globl isupper isupper: clr r0 cmp 2(sp),$'A blo 0f cmp 2(sp),$'Z bhi 0f inc r0 0: return