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cc65/libsrc/c128/fast.s

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;
; Ullrich von Bassewitz, 2003-02-13
;
; void fast (void);
; /* Switch the CPU into 2MHz mode. Note: This will disable video when in
; ** 40 column mode.
; */
;
.export _fast
.include "c128.inc"
.proc _fast
lda #$01
sta VIC_CLK_128
rts
.endproc