3264 Commits

Author	SHA1	Message	Date
Thomas Harte	0c98a78bb5	Support specific EOIs.	2023-12-12 10:55:49 -05:00
Thomas Harte	d523242e08	Add TODO.	2023-12-12 09:35:05 -05:00
Thomas Harte	070f8d8bc3	Simplify control flow.	2023-12-12 09:29:28 -05:00
Thomas Harte	add3257258	Switch to using a Parser rather than duplicating one.	2023-12-11 19:13:37 -05:00
Thomas Harte	05bfab47d2	Merge branch 'master' into PCHD	2023-12-10 23:15:33 -05:00
Thomas Harte	7b9cc2332e	Extend amount of time it takes keyboard to reset.	2023-12-10 22:44:24 -05:00
Thomas Harte	04d75a3ab8	Return proper day-of-the-month value.	2023-12-10 22:44:08 -05:00
Thomas Harte	98e05fb0e3	Introduce high-density tracks.	2023-12-10 22:17:23 -05:00
Thomas Harte	f823310fe3	Add an appropriate crop.	2023-12-08 14:29:23 -05:00
Thomas Harte	604fca7fb1	Revise colour burst phase guess.	2023-12-08 11:55:00 -05:00
Thomas Harte	e703721271	Tie snow avoidance to avoiding DEN.	2023-12-08 11:02:41 -05:00
Thomas Harte	664890cead	Expose speed as an option.	2023-12-08 10:46:59 -05:00
Thomas Harte	3a103217d1	Add a compiletime 'turbo' flag for sort-of-80286 speeds.	2023-12-08 09:38:55 -05:00
Thomas Harte	4bfde2f30f	Mostly silence PC.	2023-12-07 22:11:49 -05:00
Thomas Harte	2966a82690	Merge pull request #1258 from TomHarte/DiskWrite ... Respond appropriately if a write is attempted.	2023-12-07 22:08:07 -05:00
Thomas Harte	d61d80afec	It seems that write protection ends in not-ready.	2023-12-07 16:50:12 -05:00
Thomas Harte	1985d7da6a	Do something on a write rather than nothing.	2023-12-07 16:45:21 -05:00
Thomas Harte	75b6030516	Don't lose brown upon a blink.	2023-12-07 14:53:59 -05:00
Thomas Harte	e691cc8723	Retain dark yellow for composite output.	2023-12-07 14:21:09 -05:00
Thomas Harte	c5745f71f6	Reduce repetition, map dark yellow to brown.	2023-12-07 13:11:20 -05:00
Thomas Harte	71069bef0f	Correct get_scaled_scan_status.	2023-12-07 12:18:03 -05:00
Thomas Harte	8608f0f89d	Adjust CGA clocking down by 1/7th.	2023-12-07 12:05:15 -05:00
Thomas Harte	fc63fcb751	Unify usages of output_level for border.	2023-12-07 11:04:18 -05:00
Thomas Harte	ad78a03300	Default to CGA40 if starting a new composite PC.	2023-12-07 10:14:06 -05:00
Thomas Harte	0f22ee5de4	Add TODO.	2023-12-07 10:08:43 -05:00
Thomas Harte	83cfacc0a5	Update TODOs.	2023-12-07 10:03:52 -05:00
Thomas Harte	ef0c3549d2	Attempt but fail to indicate PM.	2023-12-06 23:28:16 -05:00
Thomas Harte	e3119a4904	Hack in read-only versions of the main registers.	2023-12-06 23:25:34 -05:00
Thomas Harte	5fde3b8d5d	Wire up a stub RTC plus appropriate option ROM.	2023-12-06 22:56:09 -05:00
Thomas Harte	b385e6edad	Revise guess as to address wrapping.	2023-12-06 22:03:24 -05:00
Thomas Harte	8645a4b7b1	Walk further towards user display configuration.	2023-12-06 14:44:59 -05:00
Thomas Harte	ff000a5792	Support remainder of colour control.	2023-12-06 14:38:43 -05:00
Thomas Harte	1c7f8841f4	Avoid potential lengthy startup; work towards display option.	2023-12-06 13:55:41 -05:00
Thomas Harte	fd298ffbe9	Remove dead TODO.	2023-12-06 13:15:36 -05:00
Thomas Harte	987a5dbfbf	Honour monochrome flag.	2023-12-06 13:15:17 -05:00
Thomas Harte	0bb74f405f	Ensure lines are in-phase with the NTSC colour subcarrier.	2023-12-06 13:12:58 -05:00
Thomas Harte	1aa168054e	Add a phoney colour burst.	2023-12-06 13:10:28 -05:00
Thomas Harte	6d7c6de32f	Fix flush_pixels for 640px mode.	2023-12-06 11:50:16 -05:00
Thomas Harte	d3021e8c90	Attempt _something_ for 640px mode.	2023-12-06 11:42:35 -05:00
Thomas Harte	6adaf89934	Make first attempt at palette support.	2023-12-06 11:19:04 -05:00
Thomas Harte	bf49f745bf	Attempt to distinguish clocks.	2023-12-06 10:41:20 -05:00
Thomas Harte	c5aa3fc75c	Start mangling towards pixel output.	2023-12-06 10:30:30 -05:00
Thomas Harte	f455f07ba2	Support half-clocked mode.	2023-12-06 09:59:14 -05:00
Thomas Harte	561e50a24d	Implement most of CGA text mode.	2023-12-06 09:42:22 -05:00
Thomas Harte	23bdf0c2a2	Add CGA font references.	2023-12-06 09:34:04 -05:00
Thomas Harte	24eaf95e9d	Limit to eight pixels per fetch, to produce stable video.	2023-12-06 09:13:47 -05:00
Thomas Harte	e43f960934	Produce incorrect output from proper clock; capture mode.	2023-12-05 23:01:08 -05:00
Thomas Harte	fdd599e71a	Unify CRTC routing.	2023-12-05 23:00:43 -05:00
Thomas Harte	84ee683ad3	Remove redundant, false comment.	2023-12-05 23:00:21 -05:00
Thomas Harte	b2b05b590f	Clone the MDA class to CGA.	2023-12-05 22:37:33 -05:00
Thomas Harte	c5ec9ae171	Adjust MDA clock; it's slightly slower than my guess.	2023-12-05 22:31:37 -05:00
Thomas Harte	5576588c2d	Fix drive enables, go back to FF for non-existent ports.	2023-12-05 22:02:41 -05:00
Thomas Harte	fd8afb6668	Devolve memory location and font ROM decision.	2023-12-05 16:46:39 -05:00
Thomas Harte	bdf9c4765b	Loosen the assumption of MDA.	2023-12-05 16:38:09 -05:00
Thomas Harte	6659a1dec5	Exit on EOP.	2023-12-05 15:37:25 -05:00
Thomas Harte	23c60ae9bc	Supply video adaptor type.	2023-12-05 15:19:58 -05:00
Thomas Harte	4265455c31	Unify DMA interface.	2023-12-05 14:52:14 -05:00
Thomas Harte	0bcb17985b	Eliminate further warnings.	2023-12-05 14:44:20 -05:00
Thomas Harte	9601c69e12	Implement blinking text.	2023-12-04 22:02:38 -05:00
Thomas Harte	9f65587a1d	Correct scan status scaling; rearrange FDC marginally.	2023-12-04 21:46:03 -05:00
Thomas Harte	b0d1dedb65	Support MDA control: display enable.	2023-12-04 16:34:46 -05:00
Thomas Harte	bf8a4b7efe	Ensure sector cache is cleared upon disk change.	2023-12-04 12:28:29 -05:00
Thomas Harte	edef0732ac	Avoid potential infinite read loops.	2023-12-04 12:19:21 -05:00
Thomas Harte	0d7646d42a	Add a cursor-type template parameter.	2023-12-04 09:45:32 -05:00
Thomas Harte	37c46d579d	Add missing array imports.	2023-12-03 18:06:09 -05:00
Thomas Harte	4957ae7de1	Support cursor at point of output.	2023-12-02 22:44:26 -05:00
Thomas Harte	e77f4457c2	Map various missing keys.	2023-12-02 22:40:05 -05:00
Thomas Harte	c6b989d85b	Add an input queue, to avoid key drops.	2023-12-02 22:29:49 -05:00
Thomas Harte	92913b7455	Fix mapping of Z.	2023-12-02 18:46:22 -05:00
Thomas Harte	208846a166	Attempt proper EOP semantics; multisector reads.	2023-12-02 18:38:26 -05:00
Thomas Harte	c31ee968df	TC: start tending towards meaning.	2023-12-02 15:24:47 -05:00
Thomas Harte	ad9e0b664a	Merge pull request #1231 from TomHarte/DiskClassification ... Improve format support; log more.	2023-12-02 15:11:24 -05:00
Thomas Harte	1b7e109047	Remove nonsense comment.	2023-12-02 13:25:08 -05:00
Thomas Harte	6c10611150	Avoid potential out-of-bounds read.	2023-12-02 13:23:48 -05:00
Thomas Harte	aa15fd1fff	Comment more.	2023-12-02 00:00:44 -05:00
Thomas Harte	691d1cce9e	Simplify and fix track caching.	2023-12-01 23:35:11 -05:00
Thomas Harte	7072a1661c	Flag floppy as present.	2023-12-01 22:44:21 -05:00
Thomas Harte	bc89cb7d06	Hack attack: ignore TC.	2023-12-01 17:30:32 -05:00
Thomas Harte	33a0c40c02	Support HLT.	2023-12-01 13:15:01 -05:00
Thomas Harte	365b62b4a7	Add TODO.	2023-12-01 09:50:11 -05:00
Thomas Harte	4d1e976b55	Flag drive as interrupting.	2023-12-01 09:49:50 -05:00
Thomas Harte	4429448815	Make some effort at terminating appropriate if no sector.	2023-12-01 09:47:52 -05:00
Thomas Harte	88e67d9ad6	Return some status after reading. Seemingly wrong.	2023-12-01 09:37:30 -05:00
Thomas Harte	d101483714	Hack in enough that disk contents end up in RAM.	2023-12-01 09:34:31 -05:00
Thomas Harte	5feac8ef14	Avoid duplicate symbol.	2023-12-01 07:36:12 -05:00
Thomas Harte	a96cb1ebd6	Decommit debugging hook.	2023-12-01 06:46:00 -05:00
Thomas Harte	2da2240d34	Remove errant break.	2023-12-01 06:45:29 -05:00
Thomas Harte	ef37b09a78	Seed all transfers as complete.	2023-11-30 22:47:38 -05:00
Thomas Harte	9fc0d411fd	Further flesh out DMA, breaking POST.	2023-11-30 22:45:40 -05:00
Thomas Harte	0dc44e8efd	Adjust audio formulation. ... Probably still not right, but less wrong with the current input.	2023-11-30 14:37:13 -05:00
Thomas Harte	c076636df1	Fix typo.	2023-11-30 14:26:26 -05:00
Thomas Harte	c397da3e5a	Add TODOs.	2023-11-30 12:52:08 -05:00
Thomas Harte	5f6bbec741	Capture DMA high bytes, add actor for accesses.	2023-11-30 12:47:50 -05:00
Thomas Harte	7f0bb716f7	Grab sector contents, ready for more FDC work.	2023-11-29 15:55:37 -05:00
Thomas Harte	b7d3633b38	Log slightly more.	2023-11-29 15:30:47 -05:00
Thomas Harte	05504c8389	Accept and keep hold of disk images.	2023-11-29 15:20:14 -05:00
Thomas Harte	8d01829fa7	Adopt PC-style naming, limit to one drive.	2023-11-29 11:35:21 -05:00
Thomas Harte	be842ee2f1	Add drive indicator lights.	2023-11-29 11:31:37 -05:00
Thomas Harte	e034daa6c8	Capture motor state.	2023-11-29 09:52:16 -05:00
Thomas Harte	ce4bcf9064	Improve comment.	2023-11-29 09:50:08 -05:00
Thomas Harte	a992ae37b1	Mildly rearrange, to match enum order.	2023-11-29 09:49:15 -05:00
Thomas Harte	fbbe3ab7f1	Include seek ended flag.	2023-11-29 09:45:45 -05:00
Thomas Harte	6e2e67fd46	Sculpt out enough to get to a read data command.	2023-11-29 09:42:43 -05:00
Thomas Harte	3827a084ad	Code to GlaBIOS expectations.	2023-11-28 23:18:22 -05:00
Thomas Harte	301442a0b1	Fix meaning of flag, use correctly.	2023-11-28 22:34:34 -05:00
Thomas Harte	dd4bcf68bf	Load up on debugging logs.	2023-11-28 15:09:57 -05:00
Thomas Harte	b860fba0a3	Make an attempt at providing varied sense interrupt statuses.	2023-11-28 14:12:39 -05:00
Thomas Harte	c19c356c10	Add disabled longer serialisation.	2023-11-27 23:23:00 -05:00
Thomas Harte	8fec9bef11	Attempt IRQ logic.	2023-11-27 23:16:24 -05:00
Thomas Harte	bffe3ffa25	Add an 8272 results phase.	2023-11-27 23:05:37 -05:00
Thomas Harte	993366ac5a	Merge branch 'master' into PCFDC	2023-11-27 22:16:30 -05:00
Thomas Harte	87eec47b79	Mildly reduce cost of 8-byte ROM overlay.	2023-11-27 15:48:30 -05:00
Thomas Harte	032eeb4757	Eliminate runtime switch.	2023-11-27 14:57:41 -05:00
Thomas Harte	5c7f94d2ef	Introduce the possibility of operation type as a template parameter. ... It's already proven possible to provide this for instruction fetch, so I think it'll immediately be a win. But more importantly it opens a path forwards for further improvement.	2023-11-27 11:48:34 -05:00
Thomas Harte	291723e85e	Insert notes to self, trying to tie down FloppyController interface.	2023-11-27 10:27:36 -05:00
Thomas Harte	a6a464c240	Add printed TODO.	2023-11-25 21:40:13 -05:00
Thomas Harte	9bd75464b5	Proceed to receiving a sense interrupt status.	2023-11-25 18:15:37 -05:00
Thomas Harte	0bb048e24b	Start formalising/extracting 8272 status.	2023-11-25 18:10:49 -05:00
Thomas Harte	8c70317d31	Introduce interrupt.	2023-11-24 23:06:52 -05:00
Thomas Harte	dd135bf3fe	Start experimenting with a possible end-of-reset interrupt?	2023-11-24 22:41:33 -05:00
Thomas Harte	2efb5236f7	Add an agent for floppy control.	2023-11-24 22:19:39 -05:00
Thomas Harte	d5c30e3175	Add enough keyboard support to be able to bypass the initial FDC BIOS failure report.	2023-11-24 13:38:06 -05:00
Thomas Harte	89423f28ef	Limit extraneous printing.	2023-11-23 22:47:31 -05:00
Thomas Harte	019d987623	Clear buffer on read.	2023-11-23 22:16:08 -05:00
Thomas Harte	7e8020df59	Avoid a spurious initial interrupt.	2023-11-23 22:15:20 -05:00
Thomas Harte	44d602e0f6	Seriously attempt a keyboard controller.	2023-11-23 22:10:51 -05:00
Thomas Harte	0674da0325	Flip IRQ priority.	2023-11-23 15:41:24 -05:00
Thomas Harte	113fc9f757	Add further TODO.	2023-11-23 15:29:43 -05:00
Thomas Harte	2c31452629	Add TODO, as exposition.	2023-11-23 15:19:31 -05:00
Thomas Harte	505df78108	Add column duplication, switch to green.	2023-11-23 15:18:28 -05:00
Thomas Harte	d92d0e87ac	Honour MDA attributes.	2023-11-23 14:51:32 -05:00
Thomas Harte	df9e9c2c4d	Start accumulating notes.	2023-11-22 15:21:45 -05:00
Thomas Harte	e0f72f2048	Tidy up.	2023-11-22 14:18:58 -05:00
Thomas Harte	a293a3a816	Document the future.	2023-11-22 14:14:53 -05:00
Thomas Harte	b22b489380	Mask into 4kb; I don't know whether hardware scrolling is in use.	2023-11-22 14:12:57 -05:00
Thomas Harte	231de8440e	Add text display.	2023-11-22 14:11:22 -05:00
Thomas Harte	381537fde9	Get as far as MDA being able to fetch.	2023-11-22 13:52:28 -05:00
Thomas Harte	f249e4ada6	Maintain an actual pixel buffer.	2023-11-22 13:40:50 -05:00
Thomas Harte	12179e486f	Create a solid white rectangle.	2023-11-22 13:18:39 -05:00
Thomas Harte	80b2ccd418	Attempt to wire in a CRTC.	2023-11-22 12:53:09 -05:00
Thomas Harte	1828a10885	Use less branchy inner loop.	2023-11-21 22:42:53 -05:00
Thomas Harte	bcd4a2216a	Improve clocking.	2023-11-21 22:36:11 -05:00
Thomas Harte	3da3401125	Attempt full audio output.	2023-11-21 22:28:33 -05:00
Thomas Harte	972d1d1ddd	Add audio pipeline.	2023-11-21 22:11:32 -05:00
Thomas Harte	6329a1208a	Adopt PIT-centric timing.	2023-11-21 22:02:24 -05:00
Thomas Harte	375a9f9ff5	Pull out the PIC, DMA.	2023-11-21 15:50:38 -05:00
Thomas Harte	a1e118a1ff	Do some interrupt work.	2023-11-21 15:46:31 -05:00
Thomas Harte	83ca9b3af5	Hack in some MDA text logging. Boot seems to complete?	2023-11-21 11:37:36 -05:00
Thomas Harte	acdf32e820	Handle low/high switches.	2023-11-21 11:25:53 -05:00
Thomas Harte	931e6e7a56	Add, disable, logging detritus.	2023-11-21 11:19:47 -05:00
Thomas Harte	058080f6de	Prove to my caveman self that no text is being written.	2023-11-20 23:11:27 -05:00
Thomas Harte	c4e9f75709	Edge towards but don't quite reach interrupt.	2023-11-20 22:52:20 -05:00
Thomas Harte	695282b838	PIT output now reaches the PIC.	2023-11-20 22:36:05 -05:00
Thomas Harte	f0e2ef5e28	Attempt to implement square-wave mode.	2023-11-20 22:19:18 -05:00
Thomas Harte	ee6012f6e9	Evict the PIT.	2023-11-20 19:00:16 -05:00
Thomas Harte	d3e90ce006	Capture some basics. ... BIOS now seems to get as far as expecting channel 0 to trigger an interrupt, which never comes.	2023-11-20 15:36:52 -05:00
Thomas Harte	18ddc2c83a	Route traffic.	2023-11-20 15:11:22 -05:00
Thomas Harte	abf0eead7a	Add a functionless PIC.	2023-11-20 13:53:44 -05:00
Thomas Harte	a689f2b63e	Relocate comment.	2023-11-20 12:22:30 -05:00
Thomas Harte	a3066fc040	Advance to the missing PIC.	2023-11-20 12:21:37 -05:00
Thomas Harte	7eed254de9	Bring an 8255 into the mix.	2023-11-20 12:13:42 -05:00
Thomas Harte	55f466f2fa	Add enough of the DMA subsystem to trip over in PPI world.	2023-11-19 22:55:29 -05:00
Thomas Harte	119c83eb18	Fix field decoding.	2023-11-19 21:51:27 -05:00
Thomas Harte	4e077701c9	Exit without further modification upon latch.	2023-11-19 16:37:47 -05:00
Thomas Harte	a8f1c72f5c	Take a caveman run at debugging.	2023-11-19 16:05:44 -05:00
Thomas Harte	05e93f0eb3	Implementing counting for a couple of PIT modes.	2023-11-19 15:52:32 -05:00
Thomas Harte	af885ccf08	Decode PIT mode writes.	2023-11-19 15:01:21 -05:00
Thomas Harte	2b69081fff	Start sketching the PIT.	2023-11-19 07:15:30 -05:00
Thomas Harte	a91449555f	Add link for future self.	2023-11-17 17:38:17 -05:00
Thomas Harte	afc0ca3f1b	Add XT roadmap.	2023-11-17 17:35:11 -05:00
Thomas Harte	f0ac62566c	Add an 80286 BIOS, for later.	2023-11-17 17:15:57 -05:00
Thomas Harte	d202cfc2ca	Add TODO.	2023-11-17 17:09:20 -05:00
Thomas Harte	ec2d878e3f	End run around the template. ... I have yet to get any insight whatsoever on the reason for GCC's failure here and won't have access to a suitable test machine for a while so all I have for testing is the arduous CI cycle.	2023-11-17 17:02:46 -05:00
Thomas Harte	8af173c4bc	Remove hopeful hit.	2023-11-16 15:48:27 -05:00
Thomas Harte	e1541543c3	Play hit and hope.	2023-11-16 15:40:47 -05:00
Thomas Harte	99e7de5a8b	Colocate memory.	2023-11-16 15:24:35 -05:00
Thomas Harte	095359017f	Log first unhandled port.	2023-11-16 13:02:35 -05:00
Thomas Harte	25f0a373f3	Don't sign-extend ports (!).	2023-11-16 11:17:12 -05:00
Thomas Harte	832e31f7e5	Add note to self.	2023-11-16 10:34:24 -05:00
Thomas Harte	164a7fe848	Log port IO.	2023-11-16 06:48:24 -05:00
Thomas Harte	62b6219763	Install BIOS, albeit in writeable storage.	2023-11-15 22:02:53 -05:00
Thomas Harte	2bc9dfbef9	Albeit with no BIOS present, execute.	2023-11-15 16:10:37 -05:00
Thomas Harte	3b84299a05	Edge closer to PCCompatible doing _something_.	2023-11-15 15:58:49 -05:00
Thomas Harte	6f48ffba16	Add enough of a ScanProducer to run.	2023-11-15 14:30:30 -05:00
Thomas Harte	1a3b2b0620	Add necessary wiring for File -> New...	2023-11-15 14:27:04 -05:00
Thomas Harte	af7069ac21	Include and fetch a BIOS.	2023-11-15 11:32:23 -05:00
Thomas Harte	e927fd00d8	Do just enough to include x86 code in the main build.	2023-11-15 11:01:28 -05:00
Ryan Carsten Schmidt	234292f163	Fix Apple II/II+/IIe first eight non-hbl vbl bytes ... Closes #1196	2023-11-13 00:51:34 -06:00
Ryan Schmidt	18ed36d090	Update get_last_read_value source documentation	2023-10-25 03:25:52 -05:00
Ryan Schmidt	c206c7e2cb	Fix Apple II/II+ text/lores hbl read addresses ... Closes #1181	2023-10-25 03:25:48 -05:00
Ryan Schmidt	98730f1f90	Fix Apple II/II+/IIe first hbl byte read addresses ... Closes #1180	2023-10-25 03:21:22 -05:00
Ryan Schmidt	c272632b5a	Fix Apple II/II+/IIe hbl row < 64 read addresses ... See #1180	2023-10-25 03:21:17 -05:00
Ryan Schmidt	577b01e80b	Fix Apple II/II+/IIe vbl rows read addresses ... See #1180	2023-10-25 03:21:06 -05:00
Thomas Harte	8efb6a9226	Simplify 'get_next_sequence_point' -> 'next_sequence_point'.	2023-09-10 18:00:49 -04:00
Thomas Harte	e5d3140cd1	Avoid flurry of startup events, repeats.	2023-08-22 09:28:57 -04:00
Thomas Harte	79e9de34b6	Flip order of byte usage in double high res mono.	2023-08-21 22:20:42 -04:00
Thomas Harte	2b58f64161	Switch to maximal signalling rate.	2023-08-21 22:12:55 -04:00
Thomas Harte	bb84a5a474	Enable various ADB-controller interrupts.	2023-08-21 15:35:13 -04:00
Thomas Harte	357a324e87	Add exposition.	2023-08-20 15:34:40 -04:00
Thomas Harte	b8e7c2b8ac	Remove printf.	2023-08-20 15:33:30 -04:00