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Fix row 0 being drawn at the bottom of the screen instead of row 1 #16

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Fix row 0 being drawn at the bottom of the screen instead of row 1 #16

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8dab6dd
Fix row 0 being drawn at the bottom of the screen instead of row 1
Jartza Apr 1, 2026
8bdf84c
Revert "Fix row 0 being drawn at the bottom of the screen instead of …
Jartza Apr 1, 2026
51a7785
Re-try the fix, easier than thought
Jartza Apr 1, 2026
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6 changes: 5 additions & 1 deletion cvideo.c
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Original file line number Diff line number Diff line change
Expand Up @@ -279,10 +279,14 @@ void cvideo_dma_handler(void) {

// Then the border scanlines
//
case 6 ... 68:
case 6 ... 67:
case 261 ... 309:
dma_channel_set_read_addr(dma_channel_0, border, true);
break;
case 68: // Last top-border line: re-anchor bline so bitmap[0] is at top
dma_channel_set_read_addr(dma_channel_0, border, true);
bline = 1;
break;

// Now point the dma at the first buffer for the pixel data,
// and preload the data for the next scanline
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