Merge pull request #7 from mywave82/even-data-express

Ensure that writes to GPIO extended writes both bank A and B (needed for OPL3 Express)

Author: ReimuNotMoe

RetroWaveLib/Board/OPL3.c

@@ -82,7 +82,7 @@ void retrowave_opl3_emit_port1(RetroWaveContext *ctx, uint8_t reg, uint8_t val)
 }
 
 void retrowave_opl3_reset(RetroWaveContext *ctx) {
-	uint8_t buf[] = {RetroWave_Board_OPL3, 0x12, 0xfe};
+	uint8_t buf[] = {RetroWave_Board_OPL3, 0x12, 0xfe, 0x00};
 	ctx->callback_io(ctx->user_data, transfer_speed / 10, buf, NULL, sizeof(buf));
 	buf[2] = 0xff;
 	ctx->callback_io(ctx->user_data, transfer_speed / 10, buf, NULL, sizeof(buf));
@@ -93,4 +93,4 @@ void retrowave_opl3_mute(RetroWaveContext *ctx) {
 		retrowave_opl3_emit_port0(ctx, i, i >= 0x40 && i <= 0x55 ? 0xFF : 0x00);
 		retrowave_opl3_emit_port1(ctx, i, i >= 0x40 && i <= 0x55 ? 0xFF : 0x00);
 	}
-}
+}

RetroWaveLib/RetroWave.c

@@ -61,7 +61,8 @@ void retrowave_io_init(RetroWaveContext *ctx) {
 	uint8_t init_sequence_1[] = {
 		0x00,
 		0x0a,	// IOCON register
-		0x28	// Enable: HAEN, SEQOP
+		0x28,	// Enable: HAEN, SEQOP
+		0x28
 	};
 
 	uint8_t init_sequence_2[] = {