diff options
| author | Duncan Smith | 2010-09-14 22:50:24 -0700 |
|---|---|---|
| committer | Duncan Smith | 2010-09-14 22:50:24 -0700 |
| commit | 3759ea83b657719244d12765f5717cae576fefb5 (patch) | |
| tree | 151975ce00bbcf342a20557fe4329d84fc694981 /flags.asm | |
| parent | 1f43ebf7030be20a3e559375a0ad09262ca2e1c3 (diff) | |
Conditional jumps work now.
Holy shit that was a hairy debug session. I have a lot to look
forward to.
Diffstat (limited to 'flags.asm')
| -rw-r--r-- | flags.asm | 17 |
1 files changed, 12 insertions, 5 deletions
@@ -44,7 +44,9 @@ F_ADD_SAVE MACRO F_SET #% ENDM - ;; Normalize and return carry bit (is loaded into Z bit) + ;; Normalize and return inverse of emulated Carry bit (loaded + ;; into host zero flag) + ;; Destroys d1 f_norm_c: move.b flag_valid-flag_storage(a3),d1 @@ -60,7 +62,9 @@ FNC_ok: andi.b #%00000001,d1 rts - ;; Normalize and return zero bit (loaded into Z bit) + ;; Normalize and return inverse of emulated Zero bit (loaded + ;; into host zero flag) + ;; Destroys d1 f_norm_z: move.b flag_valid-flag_storage(a3),d1 @@ -72,8 +76,9 @@ FNZ_ok: andi.b #%01000000,d1 rts - ;; Normalize and return Parity/oVerflow bit (loaded into Z - ;; bit) + ;; Normalize and return inverse of emulated Parity/oVerflow + ;; bit (loaded into host zero flag) + ;; Destroys d1 f_norm_pv: move.b flag_valid-flag_storage(a3),d1 @@ -160,7 +165,9 @@ f_cc_byte: popm d2-d5 rts - ;; Normalize and return Sign bit (loaded into Z bit). + ;; Normalize and return inverse of emulated Sign bit (loaded + ;; into host zero flag). + ;; Destroys d1 f_norm_sign: move.b flag_valid-flag_storage(a3),d1 |