ref: 83b5aa356fcb0fac1363730200e7ebbc8a8b43f3
dir: /home/predef.asm/
Predef:: ; Call predefined function a. ; Preserves bc, de, hl and f. ld [wPredefID], a ldh a, [hROMBank] push af ld a, BANK(GetPredefPointer) rst Bankswitch call GetPredefPointer ; stores hl in wPredefTemp ; Switch to the new function's bank rst Bankswitch ; Instead of directly calling stuff, ; push it to the stack in reverse. ld hl, .Return push hl ; Call the Predef function ld a, [wPredefAddress] ld h, a ld a, [wPredefAddress + 1] ld l, a push hl ; Get hl back ld a, [wPredefTemp] ld h, a ld a, [wPredefTemp + 1] ld l, a ret .Return: ; Clean up after the Predef call ld a, h ld [wPredefTemp], a ld a, l ld [wPredefTemp + 1], a pop hl ld a, h rst Bankswitch ld a, [wPredefTemp] ld h, a ld a, [wPredefTemp + 1] ld l, a ret