# HG changeset patch
# User Michael Pavone <pavone@retrodev.com>
# Date 1582689784 28800
# Node ID 62166274e6c0b3299dd2031769032e243e399bdb
# Parent  32a3aa7b4a45e821c7f2efe536ce75c7370ed86e
Fix edge case in Z80 interrupt handling. Fixes music in Metal Blast 2277

diff -r 32a3aa7b4a45 -r 62166274e6c0 z80_to_x86.c
--- a/z80_to_x86.c	Mon Feb 24 20:06:29 2020 -0800
+++ b/z80_to_x86.c	Tue Feb 25 20:03:04 2020 -0800
@@ -3413,6 +3413,9 @@
 	add_rdispr(code, options->gen.context_reg, offsetof(z80_context, target_cycle), options->gen.cycles, SZ_D);
 	cmp_rdispr(code, options->gen.context_reg, offsetof(z80_context, int_cycle), options->gen.cycles, SZ_D);
 	jcc(code, CC_B, skip_int);
+	//check that we are not past the end of interrupt pulse
+	cmp_rrdisp(code, options->gen.cycles, options->gen.context_reg, offsetof(z80_context, int_pulse_end), SZ_D);
+	jcc(code, CC_B, skip_int);
 	//set limit to the cycle limit
 	mov_rdispr(code, options->gen.context_reg, offsetof(z80_context, sync_cycle), options->gen.scratch2, SZ_D);
 	mov_rrdisp(code, options->gen.scratch2, options->gen.context_reg, offsetof(z80_context, target_cycle), SZ_D);