Thomas Harte
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2222cb65d6
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Split the status up into flags, assembled into a register upon demand. Attempted to implement some of the differences between the 1770/1772 and 1773/1793. Albeit with a motor fix still in place.
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2016-11-30 22:26:02 -05:00 |
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Thomas Harte
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9b6c5e814a
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Now that it can be more explicit, this should admit that it's '93-based, not '73.
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2016-11-28 16:22:35 -05:00 |
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Thomas Harte
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84cb07613d
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Checked some documentation more thoroughly; the 1793 has quite different spin-up (/head load) semantics. So it's another distinct personality. Grrr.
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2016-11-27 20:39:08 -08:00 |
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Thomas Harte
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02ba1f220f
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The '72 seems to be a '70 with altered timing. So worth differentiating.
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2016-11-27 21:06:17 +08:00 |
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Thomas Harte
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2c01f9dbed
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Added meaningful TODOs.
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2016-11-27 08:42:39 +08:00 |
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Thomas Harte
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f44542c18c
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Improved naming: this now explains what, not the mechanics of how.
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2016-11-26 23:35:11 +08:00 |
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Thomas Harte
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2f459690d4
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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.
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2016-11-26 23:29:30 +08:00 |
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Thomas Harte
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d8ecc52de8
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Temporarily disabled spin-down as harmful to the status register if following anything other than a Type 1 command.
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2016-11-26 22:27:20 +08:00 |
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Thomas Harte
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5c8ecd3051
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It probably needs a better name, but hastily implemented track caching at the Disk level.
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2016-11-26 14:27:06 +08:00 |
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Thomas Harte
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2f86b07cfa
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Added a parser for Oric-format MFM disks. Causing my first disk to load!
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2016-11-26 13:40:10 +08:00 |
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Thomas Harte
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dcfdd73077
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Switched to more conventional runtime polymorphism, also now allowing encoders (shifters as were) to be obtained, as a slightly lower-level interface than vector-of-sectors.
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2016-11-26 13:39:20 +08:00 |
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Thomas Harte
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b180f04c87
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Okay, so this file format wasn't what I hoped it was. It's another hack. Lots of work to do.
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2016-11-26 10:19:10 +08:00 |
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Thomas Harte
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7613755f94
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Fixed addressing: types are 1 and 2, not 0 and 1.
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2016-11-26 10:13:12 +08:00 |
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Thomas Harte
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b9677c9927
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Consolidated interrupt request setting.
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2016-11-26 09:41:53 +08:00 |
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Thomas Harte
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e9d6566e9c
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Of course, changing the IRQ enable may immediately change the IRQ line. Signal if so.
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2016-11-26 09:35:44 +08:00 |
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Thomas Harte
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73d30b9c00
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Corrected typo.
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2016-11-25 21:30:45 +08:00 |
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Thomas Harte
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12956901d6
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Filled in some register mirrors.
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2016-11-25 21:28:11 +08:00 |
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Thomas Harte
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54246c8f1a
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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?
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2016-11-25 21:24:59 +08:00 |
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Thomas Harte
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d5f9e0aa3b
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Ensured there's no such thing as a zero-cycle operation, even if i don't yet know exactly what I should be doing.
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2016-11-25 21:24:25 +08:00 |
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Thomas Harte
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8be81f6ebd
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Supplied disks are given to the Microdisc.
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2016-11-25 20:53:38 +08:00 |
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Thomas Harte
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4af678d2ed
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Gave the Microdisc a clock signal, added just enough of force interrupt to avoid a spurious belief that a type 3 command has started.
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2016-11-25 20:51:39 +08:00 |
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Thomas Harte
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5c019ad1c0
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Okay, so it looks like both ROM paging flags are the opposite of what I previously had.
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2016-11-25 20:42:40 +08:00 |
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Thomas Harte
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5be45c6c50
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Ensured proper default behaviour.
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2016-11-25 20:30:27 +08:00 |
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Thomas Harte
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d33f3b9224
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This is the broad strokes effort at enabling Microdisc emulation.
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2016-11-25 20:15:48 +08:00 |
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Thomas Harte
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7c2d9f3752
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This seems to be right, per http://wiki.defence-force.org/doku.php?id=oric:hardware:floppy_disk_controller_wd1793
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2016-11-22 22:35:43 +08:00 |
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Thomas Harte
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5ebc1c63ff
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Switched video to postfix underscores, for consistency.
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2016-11-22 22:28:45 +08:00 |
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Thomas Harte
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707763f80b
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Added Microdisc storage to the Oric class, switching all instance storage to postfix underscore while I'm here.
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2016-11-22 22:22:00 +08:00 |
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Thomas Harte
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0c3644f350
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Made a second parse at logic. We'll see.
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2016-11-22 22:12:32 +08:00 |
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Thomas Harte
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03843bf934
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Unified delegates. Let's keep it easy for the caller.
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2016-11-22 22:11:11 +08:00 |
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Thomas Harte
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13a608a8c2
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Added what may be correct paging logic.
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2016-11-22 22:09:52 +08:00 |
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Thomas Harte
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363db695e8
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Started implementation of the Microdisc selection logic.
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2016-11-22 08:12:53 +08:00 |
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Thomas Harte
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59e2a09107
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Added assumption that Microdisc => BASIC 1.1.
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2016-11-22 08:12:24 +08:00 |
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Thomas Harte
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09f965e6a9
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Fixed potential bug whereby inserting a disk into a drive that hadn't been lazily allocated yet but had already been selected wouldn't take effect.
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2016-11-22 08:11:57 +08:00 |
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Thomas Harte
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ea33a28695
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Any Oric-format disks that are inserted now make it all the way to the Oric, along with a request to emulate the Microdisc. It has received a copy of the ROM. The ball is entirely in its court now.
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2016-11-21 20:59:25 +08:00 |
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Thomas Harte
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fc1afe9351
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Merge pull request #79 from TomHarte/OricDSK
Creates a base class for file format implementations which seeks to collect boilerplate stuff
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2016-11-21 20:51:48 +08:00 |
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Thomas Harte
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8499783b14
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Dragged multibyte primitives and signature checks up to the base class. Implemented support for Oric MFM-style .DSK, at the file format level.
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2016-11-21 20:47:16 +08:00 |
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Thomas Harte
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31c2548804
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Created a base class for the boilerplate fopen stuff, switched as many classes as possible to its use, switched to postfix underscores and non-camelCase names.
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2016-11-21 20:14:09 +08:00 |
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Thomas Harte
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efb53c292c
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Merge pull request #78 from TomHarte/WD1772Pins
Attempts properly to expose the data and interrupt request lines from the WD1770
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2016-11-21 13:25:49 +08:00 |
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Thomas Harte
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d4a1961378
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Added getters for the IRQ and DRQ lines plus a delegate to receive changes; adjusted code so that the two lines signal.
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2016-11-21 13:21:49 +08:00 |
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Thomas Harte
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4ec042fad1
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Merge pull request #77 from TomHarte/LineBuffer
Makes input and output OpenGL data submission atomic, while cleaning code generally
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2016-11-21 12:24:43 +08:00 |
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Thomas Harte
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7c85cb62e4
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Moved underscores, removed indirections where they're not necessary, converted those names that were still looking very Objective-C and moved the GL fence variable into the private area, where it should always have been.
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2016-11-21 12:14:52 +08:00 |
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Thomas Harte
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bc03e12dc5
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Switched to suffix underscores.
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2016-11-21 11:57:45 +08:00 |
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Thomas Harte
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340607e13e
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Switched the flywheel to suffix underscores.
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2016-11-21 11:48:31 +08:00 |
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Thomas Harte
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e1285028aa
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Removed a redundant clear and some dead code.
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2016-11-21 11:42:45 +08:00 |
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Thomas Harte
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7b38247ab3
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Updated outdated comments.
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2016-11-21 11:40:13 +08:00 |
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Thomas Harte
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d7d0ed378a
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Only the final intermediate buffer needs clearing, on reflection.
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2016-11-21 11:26:07 +08:00 |
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Thomas Harte
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c89345c639
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Reduced buffer size.
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2016-11-21 11:21:14 +08:00 |
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Thomas Harte
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32dbfe947d
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With hindsight, the elimination of this might have been overzealous.
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2016-11-20 10:53:35 +08:00 |
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Thomas Harte
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ef0367d4a4
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Corrected typo.
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2016-11-20 09:12:43 +08:00 |
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Thomas Harte
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5bc165960a
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Completed refactoring.
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2016-11-20 09:12:06 +08:00 |
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