From 4066439cd031e2bac9b450bc3ef4a777dc1fe1c6 Mon Sep 17 00:00:00 2001
From: Mike Pavone <pavone@retrodev.com>
Date: Sun, 2 Jun 2013 21:38:18 -0700
Subject: Clear IFF1 and IFF2 when an interrupt is taken on the Z80

---
 zruntime.S | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/zruntime.S b/zruntime.S
index 2531eb4..d6250fb 100644
--- a/zruntime.S
+++ b/zruntime.S
@@ -38,7 +38,11 @@ z80_handle_cycle_limit_int:
 	cmp 116(%rsi), %ebp
 	jb zskip_int
 	mov 112(%rsi), %ebp /* set cycle limit to sync cycle */
+	/* not sure this is really necessary now that IFF1 and IFF2 are geting cleared */
 	movl $0xFFFFFFFF, 116(%rsi) /* make sure the interrupt doesn't fire more than once */
+	/* disable interrupts */
+	movb $0, 96(%rsi)
+	movb $0, 97(%rsi)
 	add $7, %ebp
 	sub $2, %r9w
 	mov %r9w, %r14w
-- 
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