1 files changed, 2 insertions, 0 deletions
diff --git a/blastem.c b/blastem.c
index c704ef2..13b3429 100644
--- a/blastem.c
+++ b/blastem.c
@@ -195,6 +195,8 @@ void sync_z80(z80_context * z_context, uint32_t mclks)
 			while (z_context->current_cycle < z_context->sync_cycle) {
 				if (z_context->iff1 && z_context->current_cycle < (vint_cycle + Z80_VINT_DURATION)) {
 					z_context->int_cycle = vint_cycle < z_context->int_enable_cycle ? z_context->int_enable_cycle : vint_cycle;
+				} else {
+					z_context->int_cycle = CYCLE_NEVER;
 				}
 				z_context->target_cycle = z_context->sync_cycle < z_context->int_cycle ? z_context->sync_cycle : z_context->int_cycle;
 				dprintf("Running Z80 from cycle %d to cycle %d. Native PC: %p\n", z_context->current_cycle, z_context->sync_cycle, z_context->native_pc);