Writing a non-APCS program
If you are writing a pure assembler program, then you do not have to follow APCS for objasm to assemble it.
AREA |my$$code|, CODE, READONLY ENTRY R0 RN 0 R14 RN 14 PC RN 15 MOV R0, #255 loop SWI 1 ; OS_WriteS DCB "Alyson! ", 0 SUBS R0, R0, #1 BNE loop MOV PC, R14 ENDThat is a really tiny program. objasm will compile it, and if you tell link to output a Binary file (basically an 'app' without the AIF header), then you'll have a program 32 bytes long:
ÿ ãïAlyson! Pâùÿÿ[1a][0e]ð á