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Author SHA1 Message Date
Thomas Harte
659e4f6987 Include fixed cost of rolls. Which includes providing slightly more information to did_shift. 2022-06-01 20:30:51 -04:00
Thomas Harte
cd5f3c90c2 Ensure proper resumption after a forced exit in will_perform. 2022-06-01 15:27:09 -04:00
Thomas Harte
91a6911a51 Correct ADDA/SUBA timing. 2022-06-01 15:03:03 -04:00
Thomas Harte
0857dd0ae5 Include fixed base cost in MULU and MULS. 2022-06-01 14:05:23 -04:00
Thomas Harte
8c242fa2dd Merge branch '68000Mk2' into InMacintosh 2022-06-01 10:48:38 -04:00
Thomas Harte
5a4f117a12 Merge branch '68000Mk2' of github.com:TomHarte/CLK into 68000Mk2 2022-06-01 10:48:14 -04:00
Thomas Harte
62ed1ca2fd Fix MOVE CCR permissions. 2022-06-01 09:22:47 -04:00
Thomas Harte
d1298c8863 Correct MOVE timing without breaking PEA, LEA, etc. 2022-06-01 09:06:08 -04:00
Thomas Harte
75e85b80aa Factor out the common stuff of exception state. 2022-06-01 08:20:33 -04:00
Thomas Harte
73815ba1dd No need for this hoop jumping here. 2022-06-01 08:20:06 -04:00
Thomas Harte
e1abf431cb Don't test undefined flags. 2022-05-30 16:23:51 -04:00
Thomas Harte
8e0fa3bb5f DIV # with a divide by zero should be 44 cycles. 2022-05-29 21:22:45 -04:00
Thomas Harte
8ffaf1a8e4 Ensure did_divu/s are performed even upon divide by zero. 2022-05-29 21:18:19 -04:00
Thomas Harte
7788a109b0 Tweak more overtly to avoid divide by zero. 2022-05-29 20:51:50 -04:00
Thomas Harte
9eea471e72 Resolve infinite recursion. 2022-05-29 20:39:22 -04:00
Thomas Harte
3ef53315a2 Don't try to append operands to 'None'. 2022-05-29 15:28:16 -04:00
Thomas Harte
2a40e419fc Fix CHK tests: timing and expected flags. 2022-05-29 15:26:56 -04:00
Thomas Harte
d6f72d9862 Avoid runtime checking of instruction supervisor requirements. 2022-05-29 14:56:44 -04:00
Thomas Harte
3da720c789 Make requires_supervisor explicitly compile-time usable. 2022-05-29 14:55:24 -04:00
Thomas Harte
dbf7909b85 Fix timing of CMPM. 2022-05-29 14:49:42 -04:00
Thomas Harte
57aa8d2f17 Correct timing of ADDQ. 2022-05-29 14:34:06 -04:00
Thomas Harte
a318a49c72 Merge branch '68000Mk2' into InMacintosh 2022-05-28 15:01:58 -04:00
Thomas Harte
35e73b77f4 Fix interrupt stack frame. 2022-05-27 21:55:17 -04:00
Thomas Harte
698d1a7111 Fix interrupt stack frame. 2022-05-27 21:54:23 -04:00
Thomas Harte
1365fca161 Avoid phoney write modifies. 2022-05-27 21:42:55 -04:00
Thomas Harte
d17d77714f Remove outdated TODO. 2022-05-27 15:40:06 -04:00
Thomas Harte
e8dd8215ba Tweak per empirical results. 2022-05-27 15:39:02 -04:00
Thomas Harte
e11990e453 Make an attempt at DIVS timing. 2022-05-27 15:38:54 -04:00
Thomas Harte
165ebe8ae3 Add time calculation for MULU and MULS. 2022-05-27 15:38:14 -04:00
Thomas Harte
e746637bee Fill in dynamic cost of shifts. 2022-05-27 15:38:08 -04:00
Thomas Harte
0e6370d467 Tweak per empirical results. 2022-05-27 15:37:40 -04:00
Thomas Harte
512cd333e5 Make an attempt at DIVS timing. 2022-05-27 14:56:04 -04:00
Thomas Harte
f599a78cad Add time calculation for MULU and MULS. 2022-05-27 14:41:42 -04:00
Thomas Harte
7601dab464 Fill in timing calculation for DIVU. 2022-05-27 14:30:03 -04:00
Thomas Harte
a8623eab4a Fill in dynamic cost of shifts. 2022-05-27 11:12:10 -04:00
Thomas Harte
c367ddff1b Merge branch '68000Mk2' into InMacintosh 2022-05-27 10:34:11 -04:00
Thomas Harte
67b340fa5e Fix interrupt request address. 2022-05-27 10:33:36 -04:00
Thomas Harte
c97245e626 Fix CalcEA timing; make MOVEfromSR a read-modify-write. 2022-05-27 10:32:28 -04:00
Thomas Harte
79e2c17f93 Fix interrupt request address. 2022-05-26 20:20:28 -04:00
Thomas Harte
5937737bb7 Merge branch '68000Mk2' into InMacintosh 2022-05-26 19:37:44 -04:00
Thomas Harte
5f030edea4 Simplify transaction. 2022-05-26 19:37:30 -04:00
Thomas Harte
88e33353a1 Fix instruction and time counting, and initial state. 2022-05-26 09:17:37 -04:00
Thomas Harte
f3c0c62c79 Switch register-setting interface. 2022-05-26 07:52:14 -04:00
Thomas Harte
866787c5d3 Make an effort to withdraw from the high-circuitous stuff of working around the reset sequence. 2022-05-25 20:22:38 -04:00
Thomas Harte
367ad8079a Add a call to set register state with population of the prefetch. 2022-05-25 20:22:05 -04:00
Thomas Harte
64491525b4 Work further to guess at caller's intention for set_state. 
Probably I should just eliminate the initial reset, somehow.
 2022-05-25 17:01:18 -04:00
Thomas Harte
68b184885f Reapply only the status. 2022-05-25 16:54:25 -04:00
Thomas Harte
06f3c716f5 Make better effort to establish initial state. 2022-05-25 16:47:41 -04:00
Thomas Harte
22714b8c7f Capture state at instruction end, for potential inspection. 2022-05-25 16:32:26 -04:00
Thomas Harte
80c1bedffb Eliminate false prefetch for BSR. 2022-05-25 16:32:02 -04:00