chris/open-roms
1
0 Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

begin implementing stop routine

Browse Source
This commit is contained in:
Paul Gardner-Stephen committed 2019-04-22 12:09:03 +09:30
1 parent f858ab6ac4
commit b257ac8234
1 file changed
+6
Download Patch File Download Diff File Expand all files Collapse all files
c64/kernal/stop.s
+6
View File
@@ -1,3 +1,9 @@
; Function defined on pp272-273 of C64 Programmers Reference Guide
stop:
;; Bit 7 of BUCKYSTATUS contains the state of the STOP key
;; (Compute's Mapping the 64, p27)
;; Get it into the carry flag by rotating left
lda BUCKYSTATUS
rol
rts