Improve CRAM2K flip to preserve previous value

2026-04-26 13:18:31 +00:00 · 2025-11-18 20:22:47 -08:00
parent cfb55a89d4
commit 6fb5934b87
2 changed files with 4 additions and 4 deletions
@@ -21,13 +21,13 @@ _cpeekcolor:
        php
        sei
        lda     $D030
+        pha
        ora     #$01
        sta     $D030
        ldy     #0
        lda     (ptr1),y
        tay
-        lda     $D030
-        and     #$FE
+        pla
        sta     $D030
        plp
        tya
@@ -119,12 +119,12 @@ putchar:
        php
        sei
        lda     $D030
+        pha
        ora     #$01
        sta     $D030
        lda     CHARCOLOR
        sta     (ptr4),y    ; Set color
-        lda     $D030
-        and     #$FE
+        pla
        sta     $D030
        plp