small corrections

COMPTS is already initialized with READBMP. COMPTD has to be initialized instead. Otherwise a small shift appears in the image. This was not visible on the original demo picture because of the surrounding black background. Removed one unnecessary assignment to BUFFDST since it was already written on screen and will be overwritten thereafter.
2013-06-29 18:26:58 +02:00 · 2013-06-29 18:26:58 +02:00 · 536c28605e
parent 40502fc9e9
commit 536c28605e
1 changed files with 2 additions and 3 deletions
--- a/DISPLAY.S
+++ b/DISPLAY.S
@ -69,7 +69,6 @@ SAVEDST   LDY DESTY
 S2        STY DESTY
          LDA #06
          STA COMPTD
-          STA BUFFDST
          RTS


@ -102,8 +101,8 @@ GO1       LDA SOURCE+6
          STA DESTY
          LDX #191
          STX DESTX
-          LDA #07
-          STA COMPTS
+          LDA #06
+          STA COMPTD
          JSR READBMP

 BP        ASL BUFFBMP