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542126194a
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Author SHA1 Message Date
Thomas Harte
542126194a Capture interrupt input at the end of an access cycle, not the beginning. 
All still a guess.
 2022-06-03 15:39:53 -04:00
Thomas Harte
a61f7e38b6 Very minor: avoid division and modulus when unnecessary. 2022-06-03 15:39:29 -04:00
Thomas Harte
3d059cb751 Make use of Microcycle helpers where relevant. 
None of these existed when the Macintosh was first added to this emulator.
 2022-06-03 15:33:31 -04:00
Thomas Harte
74e96b881c Merge branch 'master' into InMacintosh 2022-06-03 11:20:46 -04:00
Thomas Harte
9848fa9a4d
Merge pull request #1040 from TomHarte/68000RESET 
Fix decoding of 68000 RESET.
 2022-06-03 11:20:27 -04:00
Thomas Harte
c24a7a8b58 Merge branch '68000RESET' into InMacintosh 2022-06-03 11:17:06 -04:00
Thomas Harte
71e38a6781 Fix decoding of RESET. 2022-06-03 11:15:50 -04:00
Thomas Harte
7b3cf6e747 Add missing instruction: RESET. 2022-06-03 11:15:39 -04:00
Thomas Harte
676e4a6112 Merge branch 'master' into InMacintosh 2022-06-03 10:31:07 -04:00
Thomas Harte
fd66a9b396
Merge pull request #1033 from TomHarte/68000Mk2 
Implement a bus binding for the discrete 68000 decoder and performer.
 2022-06-03 10:30:44 -04:00
Thomas Harte
640b04e59e Test only well-defined flags. 
Albeit that timing is still off.
 2022-06-03 10:18:46 -04:00
Thomas Harte
1625796cfe Test only well-defined flags. 
Albeit that timing is still off.
 2022-06-03 10:17:55 -04:00
Thomas Harte
93749cd650 Merge branch '68000Mk2' into InMacintosh 2022-06-03 08:38:58 -04:00
Thomas Harte
02b6ea6c46 Factor out would-accept-interrupt test, per uncertainty re: level 7. 2022-06-03 08:31:56 -04:00
Thomas Harte
6fcaf3571e Fix bus/address error exception frame: order and contents. 2022-06-03 08:27:49 -04:00
Thomas Harte
10b9b13673 Disable divide-by-zero PC test in lieu of better documentation. 2022-06-03 08:27:20 -04:00
Thomas Harte
6cb559f65e Merge branch '68000Mk2' of github.com:TomHarte/CLK into 68000Mk2 2022-06-02 21:43:28 -04:00
Thomas Harte
c3b436fe96 Use int64_t as an intermediary to avoid x86 exception on INT_MIN/-1. 2022-06-02 21:39:52 -04:00
Thomas Harte
aaac777651 Merge branch 'master' into 68000Mk2 2022-06-02 17:08:41 -04:00
Thomas Harte
103de74063
Merge pull request #1039 from TomHarte/UniqueAsync 
Switch DeferringAsyncTaskQueue to `unique_ptr`.
 2022-06-02 17:06:59 -04:00
Thomas Harte
7f33a5ca0c Simplify: (i) repetitive type for TaskList; (ii) unnecessary unique_ptr. 2022-06-02 17:02:36 -04:00
Thomas Harte
e389dcb912 Further simplify syntax. 2022-06-02 16:52:03 -04:00
Thomas Harte
9d278d80f1 Remove redundant reset. 2022-06-02 16:50:59 -04:00
Thomas Harte
e994910ff6 Switch to unique_ptr. 2022-06-02 16:46:41 -04:00
Thomas Harte
e7b3705060
Merge pull request #1007 from TomHarte/IPFFileFormat 
Adds partial support for the IPF file format.
 2022-06-02 12:58:47 -04:00
Thomas Harte
f17502fe81 Merge branch 'master' into 68000Mk2 2022-06-02 12:57:34 -04:00
Thomas Harte
8e7df5c1b1 Merge branch 'master' into InMacintosh 2022-06-02 12:57:24 -04:00
Thomas Harte
8ba1b4e0cf
Merge pull request #1037 from TomHarte/SaferShutdown 
Reduce potential surprise in DeferringAsyncTaskQueue::flush.
 2022-06-02 12:56:51 -04:00
Thomas Harte
93679f8d48 Reduce potential surprise in DeferringAsyncTaskQueue::flush. 2022-06-02 12:50:45 -04:00
Thomas Harte
a292483344 Merge branch '68000Mk2' into InMacintosh 2022-06-02 12:30:54 -04:00
Thomas Harte
90d720ca28 Don't test undocumented flags. 2022-06-02 12:30:39 -04:00
Thomas Harte
f8e933438e Add missing tail cost. 2022-06-02 12:26:25 -04:00
Thomas Harte
6dd89eb0d7 Adjust my expectation as to length. 2022-06-02 12:11:54 -04:00
Thomas Harte
2bd20446bb Merge branch '68000Mk2' of github.com:TomHarte/CLK into 68000Mk2 2022-06-02 05:39:32 -04:00
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