6502/cc65
1
0
Fork 0
mirror of https://github.com/cc65/cc65.git synced 2024-06-01 13:41:34 +00:00
Code Issues Projects Releases Wiki Activity

Add c16 files as well.

Browse Source
This commit is contained in:
Marco van den Heuvel 2018-03-23 14:31:53 -07:00
parent 03ba3f7473
commit 8424286a3e
3 changed files with 66 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
libsrc/c16/fast.s Normal file
View File

@ -0,0 +1,22 @@
;
; 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

22
libsrc/c16/isfast.s Normal file
View File

@ -0,0 +1,22 @@
;
; Marco van den Heuvel, 2018-03-20
;
; unsigned char isfast (void);
; /* Returns 1 if the CPU is in double clock mode. */
;
.export _isfast
.include "plus4.inc"
.proc _isfast
lda TED_CLK
lsr
and #$01
ldx #$00
rts
.endproc

22
libsrc/c16/slow.s Normal file
View File

@ -0,0 +1,22 @@
;
; Marco van den Heuvel, 2018-03-28
;
; void slow (void);
; /* Switch the CPU into single clock mode. */
;
.export _slow
.include "plus4.inc"
.proc _slow
lda TED_CLK
ora #%00000010
sta TED_CLK
rts
.endproc