diff options
Diffstat (limited to 'flags.asm')
| -rw-r--r-- | flags.asm | 10 |
1 files changed, 5 insertions, 5 deletions
@@ -48,13 +48,13 @@ F_ADD_SAVE MACRO ;; Destroys d1 f_norm_c: move.b flag_valid-flag_storage(a3),d1 - andi.b #%00000001,d1 - bne.s FNC_ok ; Bit is valid +; d1 is destroyed in all cases, so you can use lsr and the C bit (same speed, smaller) + lsr.b #1,d1 + bcs.s FNC_ok ; Bit is valid move.b f_host_ccr-flag_storage(a3),d1 andi.b #%00000001,d1 -;; XXX see above comment for using lea and then d(an) if you have a spare register. or.b d1,flag_byte-flag_storage(a3) - ori.b #%00000001,flag_valid + ori.b #%00000001,flag_valid-flag_storage(a3) FNC_ok: move.b flag_byte-flag_storage(a3),d1 andi.b #%00000001,d1 @@ -89,7 +89,7 @@ FNPV_ok: ;; d1. Destroys d0,d1. f_calc_parity: andi.w #$ff,d1 - move.b lut_parity-flag_storage(a3,d1),d1 + move.b lut_parity-flag_storage(a3,d1.w),d1 move.w flag_byte(pc),d0 and.b #%11110111,d0 or.w #%0000100000000000,d0 |