# HG changeset patch
# User Mike Pavone <pavone@retrodev.com>
# Date 1357376030 28800
# Node ID a2ab895d970840d799d9268cff94042a1ed31806
# Parent  301470eb870bdf17e1eb790164ab724d107b1096
Fix predec address mode when used as source

diff -r 301470eb870b -r a2ab895d9708 blastem.c
--- a/blastem.c	Fri Jan 04 23:52:20 2013 -0800
+++ b/blastem.c	Sat Jan 05 00:53:50 2013 -0800
@@ -34,6 +34,10 @@
 	}
 	fseek(f, 0, SEEK_END);
 	long filesize = ftell(f);
+	if (filesize/2 > CARTRIDGE_WORDS) {
+		//carts bigger than 4MB not currently supported
+		filesize = CARTRIDGE_WORDS*2;
+	}
 	fseek(f, 0, SEEK_SET);
 	fread(cart, 2, MIN(filesize/2, CARTRIDGE_WORDS), f);
 	fclose(f);
diff -r 301470eb870b -r a2ab895d9708 m68k_to_x86.c
--- a/m68k_to_x86.c	Fri Jan 04 23:52:20 2013 -0800
+++ b/m68k_to_x86.c	Sat Jan 05 00:53:50 2013 -0800
@@ -130,9 +130,9 @@
 		dec_amount = inst->extra.size == OPSIZE_WORD ? 2 : (inst->extra.size == OPSIZE_LONG ? 4 : 1);
 		out = cycles(out, PREDEC_PENALTY);
 		if (opts->aregs[inst->src.params.regs.pri] >= 0) {
-			out = sub_ir(out, inc_amount, opts->aregs[inst->src.params.regs.pri], SZ_D);
+			out = sub_ir(out, dec_amount, opts->aregs[inst->src.params.regs.pri], SZ_D);
 		} else {
-			out = sub_irdisp8(out, inc_amount, CONTEXT, reg_offset(&(inst->src)), SZ_D);
+			out = sub_irdisp8(out, dec_amount, CONTEXT, reg_offset(&(inst->src)), SZ_D);
 		}
 	case MODE_AREG_INDIRECT:
 	case MODE_AREG_POSTINC: