consolidate Tetris, lock MachineStatus address

2024-12-27 12:30:30 +00:00 · 2019-10-04 14:13:54 -07:00 · 2019-10-04 14:13:54 -07:00 · f5bac21c31
commit f5bac21c31
parent 8781be4793
6 changed files with 3 additions and 2 deletions
--- a/res/dsk/mr.
+++ b/res/dsk/mr.
--- a/res/dsk/tetris
+++ b/res/dsk/tetris
--- a/res/dsk/tetris
+++ b/res/dsk/tetris
--- a/res/dsk/tetris
+++ b/res/dsk/tetris
--- a/src/4cade.a
+++ b/src/4cade.a
@ -116,6 +116,8 @@ gGamesListStore
 SwitchToBank2
         +READ_RAM2_WRITE_RAM2
         rts
+MachineStatus
+         !byte 0                     ; SMC, fixed location for games to check it
         !word Reenter               ; NMI vector ($FFFA-B)
         !word Reenter               ; reset vector ($FFFC-D)
         !word Reenter               ; IRQ vector ($FFFE-F)
--- a/src/ui.common.a
+++ b/src/ui.common.a
@ -60,8 +60,7 @@ SoftBell
 ; out:   $0106..$011F clobbered
 ;------------------------------------------------------------------------------
 Home
-MachineStatus = *+1
-         lda   #$D1                  ; SMC
+         lda   MachineStatus
         and   #SUPPORTS_SHR
         beq   @noSHR
         lda   NEWVIDEO