diff options
Diffstat (limited to 'flags.asm')
| -rw-r--r-- | flags.asm | 30 |
1 files changed, 15 insertions, 15 deletions
@@ -1,16 +1,16 @@ ;; Routine to set the given flags ;; Noted in \1 by a 1 bit F_SET MACRO - or.b \1,flag_byte - or.b \1,flag_valid + or.b \1,flag_byte-flag_storage(a3) + or.b \1,flag_valid-flag_storage(a3) ENDM ;; Clear the given flags ;; Noted in \1 (must be a reg) by a 1 bit F_CLEAR MACRO - or.b \1,flag_valid + or.b \1,flag_valid-flag_storage(a3) not.b \1 - and.b \1,flag_byte + and.b \1,flag_byte-flag_storage(a3) ENDM ;; Use this when an instruction uses the P/V bit as Parity. @@ -21,26 +21,26 @@ F_CLEAR MACRO ;; destroyed) F_PAR MACRO - ori.b #%00000100,(flag_valid).w ; ??/4 - move.b (flag_byte).w,d1 ; ??/2 - andi.b #%11111011,d1 ; ??/4 - lea (lut_parity).w,a0 - or.b 0(a0,\1.w),d1 ; ??/4 - move.b d1,(flag_byte).w ; ??/2 - ENDM ;xxx cycles (!) + ori.b #%00000100,flag_valid-flag_storage(a3) + move.b flag_byte(pc),d1 + andi.b #%11111011,d1 + lea lut_parity(pc),a0 + or.b 0(a0,\1.w),d1 + move.b d1,flag_byte-flag_storage(a3) + ENDM ;; Use this when an instruction uses the P/V bit as Overflow. ;; Leaves the bit itself implicit; simply marks it dirty. F_OVFL MACRO - andi.b #%11111011 + andi.b #%11111011,flag_valid-flag_storage(a3) ENDM ;; Save the two operands from ADD \1,\2 F_ADD_SAVE MACRO - move.b \1,(f_tmp_src_b).w - move.b \2,(f_tmp_dst_b).w - move.b #$01,(f_tmp_byte).w + move.b \1,f_tmp_src_b-flag_storage(a3) + move.b \2,f_tmp_dst_b-flag_storage(a3) + move.b #$01,f_tmp_byte-flag_storage(a3) F_SET #% ENDM |