--- xmil/z80c/z80c_s.mcr	2004/08/08 14:00:56	1.3
+++ xmil/z80c/z80c_s.mcr	2004/08/14 12:16:18	1.5
@@ -38,7 +38,7 @@
 	}
 
 #define	MCR_RETN {														\
-		Z80_IFF &= ~((1 << IFF_NMI) | (1 << IFF_IRQ));					\
+		Z80_IFF &= ~(1 << IFF_NMI);										\
 		MCR_RET															\
 	}
 
@@ -62,7 +62,12 @@
 	}
 
 #define MCR_RETI {														\
-		Z80_IFF &= ~(1 << IFF_IRQ);										\
+		CPU_IRQ = CPU_IRQ & (CPU_IRQ - 1);								\
+		if ((!(Z80_IFF & ((1 << IFF_IFLAG) | (1 << IFF_NMI)))) &&		\
+			(CPU_REQIRQ != 0)) {										\
+			CPU_BASECLOCK -= CPU_REMCLOCK;								\
+			CPU_REMCLOCK = 0;											\
+		}																\
 		MCR_RET															\
 	}