M src/gb/renderers/proxy.c → src/gb/renderers/proxy.c

@@ -130,7 +130,7 @@ proxyRenderer->backend->writeOAM(proxyRenderer->backend, item->address);
 		}
 		break;
 	case DIRTY_VRAM:
-		if (item->address + 0x1000 <= GB_SIZE_VRAM) {
+		if (item->address <= GB_SIZE_VRAM - 0x1000) {
 			logger->readData(logger, &logger->vram[item->address >> 1], 0x1000, true);
 			proxyRenderer->backend->writeVRAM(proxyRenderer->backend, item->address);
 		}

M src/gba/renderers/proxy.c → src/gba/renderers/proxy.c

@@ -142,7 +142,7 @@ proxyRenderer->backend->writeOAM(proxyRenderer->backend, item->address);
 		}
 		break;
 	case DIRTY_VRAM:
-		if (item->address + 0x1000 <= SIZE_VRAM) {
+		if (item->address <= SIZE_VRAM - 0x1000) {
 			logger->readData(logger, &logger->vram[item->address >> 1], 0x1000, true);
 			proxyRenderer->backend->writeVRAM(proxyRenderer->backend, item->address);
 		}