fix undefined error

BartmanAbyss · Sep 28, 2022 · dad4119 · dad4119
1 parent 677116f
commit dad4119
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diff --git a/README.md b/README.md
@@ -298,6 +298,7 @@ diff -ruN gcc-12.1.0 gcc-12.1.0-barto > gcc-barto.patch
 
 ### Gfx Debugger
 * blitter doesn't get pointers if not explicitly written by CPU (e.g. reusing pointers after blit)
+* TODO: correctly show blits over 2 frames (second frame is missing blitbox)
 * TODO: show source blitter-rects
 * TODO: show 2 resources
 * TODO: tooltips for blitter-rects?

diff --git a/src/client/screen.ts b/src/client/screen.ts
@@ -153,6 +153,8 @@ export function getScreen(scale: number, model: IProfileModel, freezeModel: IPro
 		const maxCycle = CpuCyclesToDmaCycles(time);
 		for(let cycle = 0; cycle < maxCycle; cycle++) {
 			const dmaRecord = model.amiga.dmaRecords[cycle];
+			if(dmaRecord.addr === undefined)
+				continue;
 			if(dmaRecord.addr >= 0 && dmaRecord.addr < lastUpdate.byteLength) {
 				if((dmaRecord.reg & 0x1100) === 0x1100) { // CPU write
 					const color = dmaTypes.get(DmaTypes.CPU).subtypes.get(DmaSubTypes.CPU_DATA).color;