Thomas Harte
05bcd73f82
Attempts to pull drive ownership into DiskController.
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For the sake of being more intelligent as to drive clocking, hopefully. And, eventually, to support multiple drive selection.
2020-02-11 21:59:13 -05:00
Thomas Harte
efd684dc56
Opts the BD-500 in for modified Shugart RDY.
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Hopefully this is correct. I'm presently mystified as to other options.
2020-01-16 21:34:57 -05:00
Thomas Harte
aac3d27c10
Adds activity indicators for the BD-500 and Jasmin.
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Also slightly cleans up DiskController a little further.
2020-01-15 23:39:15 -05:00
Thomas Harte
91fae86e73
Factors out paging, implements a bit more of the BD500.
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That is, enough seemingly fully to work, if I force the drive to report ready.
2020-01-15 23:15:39 -05:00
Thomas Harte
6b84ae3095
Makes the Microdisc also a DiskController, and simplifies delegate interface.
2020-01-14 22:53:27 -05:00
Thomas Harte
9f30be1c13
Attempts to implement most of a Jasmin disk interface.
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With one obvious omission: there's no way to start it? The real interface had a dedicated button, but I don't yet know what that button did. Research needed.
2020-01-05 20:05:55 -05:00
Thomas Harte
0dae608da5
Embraces std::make_[unique/shared] in place of .reset(new .
2019-12-23 21:31:46 -05:00
Thomas Harte
1c154131f9
Expands size of storage in Cycles/HalfCycles; adjusts widely to compensate.
2019-10-29 22:36:29 -04:00
Thomas Harte
4a1fa8fc13
Adds some const qualifiers.
2019-10-28 21:13:42 -04:00
Thomas Harte
7c3dd55e5c
Corrects typo and improves exposition.
2018-05-24 18:57:35 -04:00
Thomas Harte
0b771ce61a
Removes all instances of the copyright symbol.
2018-05-13 15:19:52 -04:00
Thomas Harte
d0fd4dd4db
The MSX is now an activity source.
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Completing the set.
2018-05-12 17:32:53 -04:00
Thomas Harte
3ba6b6f1ee
Makes the Oric an event source.
2018-05-11 23:05:36 -04:00
Thomas Harte
4cbc87a17d
Corrects out-of-order initialisations for the 1770, Atari 2600 joystick, Pitfall II bus extender, Microdisc and 6502.
2017-11-10 22:20:44 -05:00
Thomas Harte
97a2be71e3
Introduces flush_tracks to Drive, while switching its interface to using Track::Address and adjusting associated integer types.
2017-10-06 21:45:12 -04:00
Thomas Harte
da082673d7
Drives now have a finite number of heads.
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The Amstrad volunteers itself to be single sided. Everything else stays as it was.
2017-09-15 21:18:36 -04:00
Thomas Harte
42616da7ff
Adjusts the Oric Microdisc to propagate motor control more widely.
2017-09-11 22:15:54 -04:00
Thomas Harte
0622187ddf
Strips Controller of all capabilities now housed on the Drive.
2017-09-10 19:23:23 -04:00
Thomas Harte
90c7056d12
Started devolving timed event loop logic down to the drives, moving them closer to modelling real life.
2017-09-10 14:43:20 -04:00
Thomas Harte
4abd62e62b
Standardises on const [Half]Cycles as the thing called and returned, rather than const [Half]Cycles & as it's explicitly defined to be only one int in size, so using a reference is overly weighty.
2017-07-27 22:05:29 -04:00
Thomas Harte
55ecb0c022
Converted the Microdisc into a ClockReceiver.
2017-07-24 21:51:13 -04:00
Thomas Harte
8a2bdb8d22
Converted the TimedEventLoop and the things that sit atop it into ClockReceivers.
2017-07-24 21:19:05 -04:00
Thomas Harte
e01f3f06c8
Completed curly bracket movement.
2017-03-26 14:34:47 -04:00
Thomas Harte
90151e2094
Fixed to ensure a known initial control register value, which has taken effect.
2016-12-28 18:49:32 -05:00
Thomas Harte
a568172758
Made steps towards proper CRC generation. Am currently comparing against Oric disk images, as — amongst other things — they include precomputed CRCs.
2016-12-28 18:29:37 -05:00
Thomas Harte
c304db0f5a
Deintegrated the busy flag and the interrupt request line, as the latter is reset by status reads. Which also means I can start reporting the WD INTRQ line status directly from the Microdisc. That appears to be correct, rather than honouring the Microdisc IRQ select there.
2016-12-06 21:16:29 -05:00
Thomas Harte
81ee834530
As well as a bunch of logging, reinstated rotation position preservation across tracks.
2016-12-02 18:36:47 -05:00
Thomas Harte
93c573bfa9
Implemented missing status bits (other than the index hole), and a head loading delay for the Microdisc.
2016-12-01 21:13:16 -05:00
Thomas Harte
442986ee2c
Introduced a head loading path for 1793 machines.
2016-12-01 20:12:22 -05:00
Thomas Harte
82899f2f47
Ensured flag setting is atomic, removed duplication of interrupt request versus busy, found better names for the personality testers, unified delegate protocol.
2016-12-01 07:41:52 -05:00
Thomas Harte
9b6c5e814a
Now that it can be more explicit, this should admit that it's '93-based, not '73.
2016-11-28 16:22:35 -05:00
Thomas Harte
2f459690d4
It would appear the 1770 and 1773 actually differ in relation to the (non-sensical) ability not to spin-up for a Type 2, and whether a side compare can occur. So the WD1770 class now requires a personality to be specified. Which it singly fails to honour.
2016-11-26 23:29:30 +08:00
Thomas Harte
e9d6566e9c
Of course, changing the IRQ enable may immediately change the IRQ line. Signal if so.
2016-11-26 09:35:44 +08:00
Thomas Harte
54246c8f1a
Interrupt enabling works the other way around I think, and both registers with only one bit defined should probably return '1' in all other places?
2016-11-25 21:24:59 +08:00
Thomas Harte
5c019ad1c0
Okay, so it looks like both ROM paging flags are the opposite of what I previously had.
2016-11-25 20:42:40 +08:00
Thomas Harte
7c2d9f3752
This seems to be right, per http://wiki.defence-force.org/doku.php?id=oric:hardware:floppy_disk_controller_wd1793
2016-11-22 22:35:43 +08:00
Thomas Harte
0c3644f350
Made a second parse at logic. We'll see.
2016-11-22 22:12:32 +08:00
Thomas Harte
13a608a8c2
Added what may be correct paging logic.
2016-11-22 22:09:52 +08:00
Thomas Harte
363db695e8
Started implementation of the Microdisc selection logic.
2016-11-22 08:12:53 +08:00
