cc65/libsrc/apple2/get_iigs_speed.s

23 lines
575 B
ArmAsm

;
; Colin Leroy-Mira <colin@colino.net>, 2024
;
; unsigned char __fastcall__ get_iigs_speed(void)
;
.export _get_iigs_speed
.import ostype, return0
.include "apple2.inc"
.include "accelerator.inc"
_get_iigs_speed:
lda ostype ; Return SLOW if not IIgs
bpl :+
lda CYAREG ; Check current setting
bpl :+
lda #SPEED_FAST
ldx #$00
rts
.assert SPEED_SLOW = 0, error
: jmp return0 ; SPEED_SLOW