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Author SHA1 Message Date
Thomas Harte
c86db12f1c Starts implementing DMA support on the 5380. 
The Macintosh doesn't actually use the DMA signals, but uses pseudo-DMA mode so they nevertheless need to be appropriate.
 2019-08-24 22:47:11 -04:00
Thomas Harte
ce2e85af8b Adds missing bus state callouts. 2019-08-22 23:27:00 -04:00
Thomas Harte
2d82855f26 Attempts to provide a data out phase. 2019-08-22 23:16:58 -04:00
Thomas Harte
faec516a2c Starts pushing towards figuring out a proper infrastructure for mass storage. 2019-08-21 23:22:58 -04:00
Thomas Harte
8e274ec5d0 Merge branch 'master' into SCSI 2019-08-21 22:38:18 -04:00
Thomas Harte
bb1a0a0b76 Sketches out further SCSI infrastructure. 2019-08-21 22:37:39 -04:00
Thomas Harte
252650808d Starts seeking to unbind SCSI bus logic and command performance. 2019-08-19 22:47:01 -04:00
Thomas Harte
e3d9254555 Implements phase-match bit. 
Seemingly causing the command phase to proceed.
 2019-08-18 23:15:54 -04:00
Thomas Harte
90cf99b626 Takes a wild swings at speeding up startup. 
With no success.
 2019-08-18 22:40:16 -04:00
Thomas Harte
955e909e61 Attempts to nudge the command phase further towards functioning. 2019-08-18 22:39:27 -04:00
Thomas Harte
8339e2044c Switches to proper SCSI terminology and better attempts a command phase. 2019-08-18 15:10:07 -04:00
Thomas Harte
0e0c789b02 Starts attempting to introduce a direct access device. 
Without having access to the SCSI-1 standard, a lot of this is guesswork.
 2019-08-17 23:43:42 -04:00
Thomas Harte
7e001c1d03 Corrects data line loading. 
Also adds some extra temporary logging. Outstanding question: why is ATN not being signalled? Is SEL enough?
 2019-08-17 21:30:59 -04:00
Thomas Harte
9047932b81 Corrected basic error. Arbitration now seems to succeed. 
This is seemingly followed by a pattern of signalling BUSY+SEL followed by just SEL with the various other potential device IDs in turn. To which nothing ever responds as currently implemented.
 2019-08-15 23:28:30 -04:00
Thomas Harte
f668e4a54c Makes an attempt at getting the 5380 past arbitration. 
Not entirely successful. Also gets a bit smarter with `final` on ClockingHint::Sources.
 2019-08-15 23:14:40 -04:00
Thomas Harte
ce1c96d68c Starts thinking out the mechanics of emulating a SCSI-1 bus. 2019-08-13 23:09:11 -04:00
Thomas Harte
0f67e490e8 Adjusts NCR address decoding to produce a more plausible initial interaction. 2019-08-11 22:43:25 -04:00
Thomas Harte
895c315fa5 Increases the Mac Plus too 4mb. 2019-08-11 21:41:12 -04:00
Thomas Harte
a90a74a512 Stubs in just enough of the 5380 to get a Mac Plus too boot. 2019-08-11 20:55:20 -04:00
Thomas Harte
3e1286cbef
Merge pull request #644 from MaddTheSane/patch-1 
Update CSMachine.mm
 2019-08-11 19:25:16 -04:00
Thomas Harte
949c1e1668 Adds an empty shell for what will be my 5380 implementation. 2019-08-10 23:53:52 -04:00
Thomas Harte
bbd4e4d3dc Enhances memory map fidelity to allow for ROM holes on the Mac Plus. 
This is how the ROM detects the difference between the Plus and the 512ke, it seems.
 2019-08-10 23:53:34 -04:00
C.W. Betts
4c5f596533
Update CSMachine.mm 
No need to create a temporary NSNumber object to be passed to a variadic method.
 2019-08-10 00:43:30 -06:00
Thomas Harte
4859d3781b
Merge pull request #643 from TomHarte/Mac512 
Simplifies just-in-time usage of the IWM, and the disk-speed accumulator
 2019-08-07 21:51:07 -04:00
Thomas Harte
bac0461f7f Switches the drive-speed accumulator to the delegate pattern. 
This allows the Macintosh to ensure that the IWM is kept up just-in-time with drive speed changes.
 2019-08-07 21:39:23 -04:00
Thomas Harte
f26a200d78 Switches to a JustInTimeActor to wrap the IWM. 
Also simplifies potential future usage of the IWM template.
 2019-08-07 21:28:02 -04:00
Thomas Harte
28ccb7b54e Merge branch 'master' of github.com:TomHarte/CLK 2019-08-04 21:34:49 -04:00
Thomas Harte
b6e4c8209b Switches to showing 'File -> Open...' at launch. 
As per the prevailing wind.
 2019-08-04 21:34:30 -04:00
Thomas Harte
16548f0765
Merge pull request #642 from TomHarte/InterruptSampling 
Moves timing of interrupt sampling into prefetch queue advancement.
 2019-08-04 21:20:22 -04:00
Thomas Harte
6a80832140 Moves timing of interrupt sampling into prefetch queue advancement. 
As per comment, that is definitely the only place it can occur; I don't know whether it always occurs there.
 2019-08-04 21:06:34 -04:00
Thomas Harte
c6cf0e914b
Merge pull request #641 from TomHarte/DIVSTiming 
Substantially improves DIVS timing.
 2019-08-04 20:46:50 -04:00
Thomas Harte
35b1a55c12 Corrects DIVS negative flag. 2019-08-04 20:36:33 -04:00
Thomas Harte
e3794c0c0e Takes a second pass at DIVS timing, seeming to correct that side of things. 2019-08-04 20:33:43 -04:00
Thomas Harte
f88dc23c71 Corrects comment. 2019-08-04 20:30:41 -04:00
Thomas Harte
0e293e4983 Relocates RAM delay test in order to scrape out a minor performance win. 2019-08-03 21:46:45 -04:00
Thomas Harte
e334abfe20 Partitions the 68000 arithmetic tests, to allow easier per-instruction execution. 2019-08-03 17:44:47 -04:00
Thomas Harte
fd2fbe0e59
Merge pull request #640 from TomHarte/InterruptSignalling 
Corrects 68000 address lines during interrupt acknowledgement.
 2019-08-03 15:42:15 -04:00
Thomas Harte
330b27d085 Merge branch 'master' into InterruptSignalling 2019-08-03 15:39:22 -04:00
Thomas Harte
478f2533b5 Corrects 68000 address bus during interrupt acknowledge. 
All unused bits should be 1, not 0.
 2019-08-03 15:38:36 -04:00
Thomas Harte
b96972a4b9
Merge pull request #639 from InvisibleUp/master 
Allow for scons to run on Python 3
 2019-08-03 08:51:45 -04:00
InvisibleUp
f2b083f4de Allow for scons to run on Python 3 2019-08-03 00:33:53 -04:00
Thomas Harte
80f6d665d9
Merge pull request #638 from TomHarte/SimplifiedBus 
Simplifies code around Mac bus decoding.
 2019-08-02 22:33:54 -04:00
Thomas Harte
a07488cf1b Introduces the Mac Plus memory map. 
Albeit with no SCSI support yet.
 2019-08-02 22:26:40 -04:00
Thomas Harte
d67c5145c0 Introduces RAM access delays. 2019-08-02 22:12:34 -04:00
Thomas Harte
5e76d593af Switches to table-based address decoding. 2019-08-02 21:30:04 -04:00
Thomas Harte
83393e8e91 Merge branch 'master' into SimplifiedBus 2019-08-02 21:05:45 -04:00
Thomas Harte
e08a64d455 Fixes erroneous instruction. 2019-08-02 21:04:53 -04:00
Thomas Harte
b93f9b3973 Distinguishes time advancement from bus response. 2019-08-02 19:48:41 -04:00
Thomas Harte
9c517d07d4
Merge pull request #637 from TomHarte/UserInfo 
Improves Macintosh user communications
 2019-08-02 17:29:44 -04:00
Thomas Harte
f45de5b87a Adds how-to-release-the-mouse instructions for Cocoa. 2019-08-02 17:07:51 -04:00