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limit pixel_draw to only write pixel with 0 - 255 x_pos

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hugova 2025-05-08 22:35:25 +02:00
parent c336e43c19
commit 9b5fd7d6e5
2 changed files with 2 additions and 2 deletions
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2
wip-hugo/routines/pixel/pixel.inc
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@ -1,5 +1,5 @@
Y_pos = $FB Y_pos = $FB
X_pos = $FC ; 16-bit value (uses FD) X_pos = $FC
byte_to_paint = $FE byte_to_paint = $FE
btp_mem_pos = $F9 ; 16-bit value (uses FA), byte to paint memory position btp_mem_pos = $F9 ; 16-bit value (uses FA), byte to paint memory position
C = $F7 ; 16-bit value (uses F8) C = $F7 ; 16-bit value (uses F8)

2
wip-hugo/routines/pixel/pixel_draw.s
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@ -36,7 +36,7 @@ end__:
AND X_pos AND X_pos
STA btp_mem_pos STA btp_mem_pos
LDA X_pos + 1 LDA #$00
STA btp_mem_pos + 1 STA btp_mem_pos + 1
;;The y_pos adds offset because chunk offsets + inside chunk offset. ;;The y_pos adds offset because chunk offsets + inside chunk offset.