Files
open-roms/c64/kernal/membot.s
T

25 lines
344 B
ArmAsm

;;
;; Official Kernal routine, described in:
;;
;; - [RG64] C64 Programmer's Reference Guide - page 287/288
;; - [CM64] Compute's Mapping the Commodore 64 - page 240
;;
;; CPU registers that has to be preserved (see [RG64]): .A
;;
membot:
bcc membot_set
ldx MEMSTR+0
ldy MEMSTR+1
rts
membot_set:
stx MEMSTR+0
stx MEMSTR+1
rts