the10thwiz/cc65
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

"save area" is used to save modified system variables and ports. It's

Browse Source 
shared between the second and main chunk.
This commit is contained in:
Christian Groessler
2013-05-30 02:31:25 +02:00
parent 06f441e90f
commit 2f6e7874c6
2 changed files with 31 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
libsrc/atari/save_area.inc Normal file
View File

@@ -0,0 +1,6 @@
.import SAVMSC_save
.import MEMTOP_save
.import APPMHI_save
.import RAMTOP_save
.import PORTB_save

25
libsrc/atari/save_area.s Normal file
View File

@@ -0,0 +1,25 @@
;
; Atari XL, shared data between 2nd load chunk and main chunk
;
; Contains old values of modified system variables and ports.
;
; Christian Groessler, chris@groessler.org, 2013
;
.if .defined(__ATARIXL__)
.export SAVMSC_save
.export MEMTOP_save
.export APPMHI_save
.export RAMTOP_save
.export PORTB_save
.segment "SAVEAREA"
SAVMSC_save: .res 2
MEMTOP_save: .res 2
APPMHI_save: .res 2
RAMTOP_save: .res 1
PORTB_save: .res 1
.endif