Files
open-roms/src/kernal/board_u64/ultimate64_slow_fast.s
T

23 lines
401 B
ArmAsm

;; #LAYOUT# STD * #TAKE
;; #LAYOUT# * KERNAL_0 #TAKE
;; #LAYOUT# * * #IGNORE
!ifdef CONFIG_MB_U64 {
U64_SLOW:
lda #$00 ; for U64_TURBOCTL - badlines, 1MHz
+skip_2_bytes_trash_nvz
; FALLTROUGH
U64_FAST: ; clears zero flag - important for tape code
lda #$0F ; for U64_TURBOCTL - badlines, 48MHz
sta U64_TURBOCTL
rts
}