# HG changeset patch
# User Michael Pavone <pavone@retrodev.com>
# Date 1446439452 28800
# Node ID b10cf2c921ad4796429b41fab765fae4ec6c874f
# Parent  215b5dabbc20659872e6514a4fe9d6a37f9d08b2
Fix mapping of key on/off reg bits to operators

diff -r 215b5dabbc20 -r b10cf2c921ad ym2612.c
--- a/ym2612.c	Sun Nov 01 20:40:30 2015 -0800
+++ b/ym2612.c	Sun Nov 01 20:44:12 2015 -0800
@@ -691,8 +691,9 @@
 				if (channel > 2) {
 					channel--;
 				}
-				for (uint8_t op = channel * 4, bit = 0x10; op < (channel + 1) * 4; op++, bit <<= 1) {
-					if (value & bit) {
+				uint8_t bits[] = {0x10, 0x40, 0x20, 0x80};
+				for (uint8_t op = channel * 4, bit = 0; op < (channel + 1) * 4; op++, bit++) {
+					if (value & bits[bit]) {
 						if (context->operators[op].env_phase == PHASE_RELEASE)
 						{
 							first_key_on = 1;