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cc65/libsrc/plus4/fast.s

23 lines
292 B
ArmAsm

;
; Marco van den Heuvel, 2018-03-20
;
; void fast (void);
; /* Switch the CPU into double clock mode. */
;
.export _fast
.include "plus4.inc"
.proc _fast
lda TED_CLK
and #%11111101
sta TED_CLK
rts
.endproc