Thomas Harte
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2ff157cf7a
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Switched CRTMachine over to use Cycles as an explicit statement of units, and followed through on the effects of that.
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2017-07-22 22:17:29 -04:00 |
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Thomas Harte
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83628b285b
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Experimentally turned the 6502 into a clock receiver. No problem encountered.
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2017-07-22 21:52:21 -04:00 |
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Thomas Harte
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dddb30477b
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Used a different inner-loop variable, for clarity.
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2017-07-21 21:52:08 -04:00 |
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Thomas Harte
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3f609e17b3
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Factored out the table-lookup approach to being a typer, and adjusted so as definitely to limit myself to positive offset table lookups.
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2017-07-21 21:18:51 -04:00 |
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Thomas Harte
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b3861ff755
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Reduced copying of Pulses.
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2017-07-16 19:49:31 -04:00 |
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Thomas Harte
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1d3ae31755
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Abstracted the concept of an Acorn shifter away from being a PLLParser. The Acorn tape parser now skips using that class and uses the shifter. The actual Electron also uses the shifter. So the two are completely aligned. Net result: the Electron should successfully load exactly when static analysis was successful.
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2017-07-16 19:24:01 -04:00 |
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Thomas Harte
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481487f084
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Oh yuck, it looks like I've repeated this same test in two different places. Must figure out where to factor it out to. But in the meantime, the emulated Electron has just loaded its first CSW.
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2017-07-13 22:39:30 -04:00 |
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Thomas Harte
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353c854734
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Removed a TODO that is no longer appropriate.
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2017-07-09 22:06:50 -04:00 |
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Thomas Harte
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eb8a2de5d6
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Settled definitively on flush as more communicative than synchronise (and slightly more locale neutral); culled some more duplication from the Z80.
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2017-05-15 07:38:59 -04:00 |
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Thomas Harte
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0808e9b6fb
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Pulled the 6502 into a CPU namespace, making it an instance of something that has micro-opcodes and schedules them, and factoring out the formulation of a register pair.
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2017-05-14 22:08:15 -04:00 |
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Thomas Harte
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e01f3f06c8
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Completed curly bracket movement.
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2017-03-26 14:34:47 -04:00 |
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Thomas Harte
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aff69dbc34
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Resolved spurious static analyser issue; screen mode will always be 0–6 but it doesn't know that. Setting a non-zero divider doesn't feel worth worrying about for a cleaner compile.
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2017-02-11 13:35:22 -05:00 |
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Thomas Harte
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f3d9aec8fc
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Fixed Electron's support for automatically booting floppy disks.
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2017-01-08 14:47:41 -05:00 |
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Thomas Harte
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8cd1575891
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Similar fix to that over in Oric land: ensure a known, effective initial value for the Plus 3's control register.
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2016-12-28 18:52:36 -05:00 |
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Thomas Harte
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4fca30b81f
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Made the Plus 3 less chatty, documented invalidate_track.
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2016-12-25 21:06:58 -05:00 |
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Thomas Harte
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3805e3d17d
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Ensured base address is set properly at construction.
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2016-12-22 22:46:02 -05:00 |
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Thomas Harte
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63107cd492
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Tidied, very slightly.
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2016-12-15 19:49:25 -05:00 |
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Thomas Harte
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a555c5762a
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Rearranged code, hopefully into a more logical grouping.
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2016-12-15 19:47:04 -05:00 |
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Thomas Harte
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4a7ddaf2e9
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Added documentation and a quick note to self.
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2016-12-15 19:43:04 -05:00 |
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Thomas Harte
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f61176cd7d
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Reinstituted something of the don't-do-pixel-work-until-an-affecting-write-occurs optimisation.
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2016-12-15 19:20:14 -05:00 |
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Thomas Harte
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c1c70a767a
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Attempted fully to reinstate proper timing.
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2016-12-15 18:52:16 -05:00 |
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Thomas Harte
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0326316bb8
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Reinstated whole-frame counting. Thereby to reinstate proper interrupts.
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2016-12-15 18:09:49 -05:00 |
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Thomas Harte
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b58b11fc93
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Switched to a table-based dispatch of line-by-line actions, primarily to simplify.
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2016-12-15 18:07:46 -05:00 |
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Thomas Harte
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fd541e1142
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An early draft; dealing with the issue that not all cycles are necessarily consumed in a single call. Incomplete; broken. Committing for cross-machine visibility.
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2016-12-12 08:01:10 -05:00 |
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Thomas Harte
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be7e05e109
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Started attempting to move total responsibility for display-related interrupts and RAM timing into the video.
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2016-12-11 18:34:49 -05:00 |
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Thomas Harte
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c5cf8d9531
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Ensured the video subsystem correctly handles requests to run over a frame boundary.
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2016-12-11 16:17:51 -05:00 |
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Thomas Harte
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52028432e1
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Restored some semblance of output.
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2016-12-10 22:19:10 -05:00 |
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Thomas Harte
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0aae1bd1ef
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Fixed calculation of termination cycle.
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2016-12-10 21:35:41 -05:00 |
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Thomas Harte
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c43e481a33
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Started factoring video out of the Electron.
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2016-12-10 21:07:52 -05:00 |
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Thomas Harte
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a549fd1ecc
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Introduced the ability simply to piggy-back off the CRT's natural phase for the colour burst, thereby eliminating a couple of redundant independent attempts in the Oric and Electron.
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2016-12-10 13:42:34 -05:00 |
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Thomas Harte
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eb3a1fbfb7
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Commuted remaining Electron underscores. It would be nice also to factor out the video, but the time hasn't come yet.
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2016-12-03 13:01:01 -05:00 |
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Thomas Harte
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4fac538a57
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Factored out the Electron's speaker and adjusted instance variable naming.
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2016-12-03 12:41:02 -05:00 |
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Thomas Harte
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d1d93829cf
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Factored out the Tape and switched it to postfix underscores.
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2016-12-03 12:18:08 -05:00 |
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Thomas Harte
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2003b514aa
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Switched the typer to postfix underscores.
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2016-12-03 10:55:50 -05:00 |
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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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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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311f8c0b47
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Restored audio.
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2016-11-16 11:10:07 +08:00 |
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Thomas Harte
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45b169f341
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Made a few mapping fixes, clarified where the default reset code lives, ensured the Oric and Vic clear their keys when the typer ends.
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2016-11-05 15:28:03 -04:00 |
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Thomas Harte
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338904fffe
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Made similar cleanings of the Electron and Vic.
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2016-11-05 15:07:57 -04:00 |
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Thomas Harte
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9fb9d92437
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Made the typer much more able to help out, and thereby tidied and separated the Oric's typer.
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2016-11-05 14:47:09 -04:00 |
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Thomas Harte
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7843a244b0
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Ensured emulation doesn't enter an infinite loop if the user attempts to read beyond the end of a tape.
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2016-10-28 22:23:25 -04:00 |
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Thomas Harte
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4a062c616f
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Added enough wiring to get Oric TAPs through to a completely unimplemented Oric emulation.
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2016-10-11 22:20:13 -04:00 |
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Thomas Harte
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de658b70d7
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That's thread safety, subject to the async task queue being made to work...
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2016-10-07 17:02:36 -04:00 |
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Thomas Harte
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2d26feb073
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Added mappings for the previously-missing characters @, [ and ].
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2016-10-04 22:03:53 -04:00 |
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Thomas Harte
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f9ee6803df
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It's likely this should be set at startup too, based on latest info.
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2016-10-03 22:16:10 -04:00 |
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Thomas Harte
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97304e22f0
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Adjusted per tests on StarDot; it appears the tape interrupts may fire during audio output, as if in tape output mode.
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2016-10-03 20:03:14 -04:00 |
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Thomas Harte
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dae6b45464
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Ensured the always-on bit of the interrupt status register is indeed on.
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2016-10-03 19:15:31 -04:00 |
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Thomas Harte
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79412dc84d
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Upped MFM clock cycles, switched back to using the typer for the ADFS and adjusted ADFS ROM slots.
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2016-09-28 21:28:34 -04:00 |
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Thomas Harte
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4db086949a
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Made an attempt to add MFM decoding to the 1770; ensured something is returned when reading the Plus 3 status register again.
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2016-09-25 21:38:52 -04:00 |
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Thomas Harte
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572d5587d9
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Made a first stab at enabling multi-disk machines and thereby obeying (some of) the Plus 3's status register.
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2016-09-25 21:24:16 -04:00 |
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