M CHANGES → CHANGES

@@ -1,6 +1,7 @@
 0.5.1: (Future)
 Bugfixes:
  - GB MBC: Fix MBC7 when size is incorrectly specified
+ - GB Video: Setting LYC=LY during mode 2 should trigger an IRQ
 Misc:
  - All: Only update version info if needed
 

M src/gb/io.c → src/gb/io.c

@@ -341,7 +341,6 @@ case REG_JOYP:
 	case REG_SB:
 	case REG_TIMA:
 	case REG_TMA:
-	case REG_LYC:
 		// Handled transparently by the registers
 		break;
 	case REG_TAC:
@@ -356,6 +355,15 @@ // TODO: handle GBC differences
 		GBVideoProcessDots(&gb->video);
 		value = gb->video.renderer->writeVideoRegister(gb->video.renderer, address, value);
 		GBVideoWriteLCDC(&gb->video, value);
+		break;
+	case REG_LYC:
+		if (gb->video.mode == 2) {
+			gb->video.stat = GBRegisterSTATSetLYC(gb->video.stat, value == gb->video.ly);
+			if (GBRegisterSTATIsLYCIRQ(gb->video.stat) && value == gb->video.ly) {
+				gb->memory.io[REG_IF] |= (1 << GB_IRQ_LCDSTAT);
+				GBUpdateIRQs(gb->video.p);
+			}
+		}
 		break;
 	case REG_DMA:
 		GBMemoryDMA(gb, value << 8);