romex/no_tape/B0_FEFD_mon_read.s

13 lines
275 B
ArmAsm

; Patch monitor READ code
.pc02
.include "iiee.defs"
rompatch $fefd,13,"mon_read"
bra $ff2d ; print ERR
; delete key patch
jsr $fd35 ; RDCHAR
cmp #$ff
bne :+
lda #$88
: rts
endpatch