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authorDuncan Smith2010-06-21 14:51:44 -0700
committerDuncan Smith2010-06-21 14:51:44 -0700
commitf2fc7ea378ce3b5e6d4a4ebc0abe0d103c25ba46 (patch)
treecc0fae75aa0b2dfd38ee85615421a03d2152a35d /opcodes.asm
parentc2d7f209a872d7fe0571c924b4386f45717f8408 (diff)
Parted out F_SBC_B to alu_sbc.
Diffstat (limited to 'opcodes.asm')
-rw-r--r--opcodes.asm15
1 files changed, 4 insertions, 11 deletions
diff --git a/opcodes.asm b/opcodes.asm
index 9b550ea..35a7f4f 100644
--- a/opcodes.asm
+++ b/opcodes.asm
@@ -1439,17 +1439,10 @@ emu_op_97:
;; Do a SBC \2,\1
F_SBC_B MACRO
- ;; XXX TOO BIG
- bsr flags_normalize
- move.b flag_byte(pc),d0
- andi.b #1,d0
- add.b \1,d0
- move.b d0,(f_tmp_src_b-flag_storage)(a3)
- move.b \2,(f_tmp_dst_b-flag_storage)(a3)
- sub.b d0,\2
- move sr,(f_host_sr-flag_storage)(a3)
- move.w #$0202,(flag_byte-flag_storage)(a3)
-
+ move.b \2,d1
+ move.b \1,d0
+ bsr alu_sbc
+ move.b d1,\2
ENDM
START