10910 Commits

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Author	SHA1	Message	Date
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	af70c8847d	Factor out the stuff of accumulating and dissecting commands.	2023-11-24 18:24:58 -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	ed31cfd80a	Merge pull request #1216 from TomHarte/ReduceNoise ... Limit extraneous printing.	2023-11-23 23:05:46 -05:00
Thomas Harte	89423f28ef	Limit extraneous printing.	2023-11-23 22:47:31 -05:00
Thomas Harte	593c32f621	Merge pull request #1215 from TomHarte/PCKeyboard ... Attempt to implement the XT keyboard controller.	2023-11-23 22:26:09 -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	b3c07b76ee	Merge pull request #1214 from TomHarte/MDAOutput ... Add basic MDA text output.	2023-11-22 15:04:21 -05:00
Thomas Harte	e0f72f2048	Tidy up.	2023-11-22 14:18:58 -05:00
Thomas Harte	825f3184eb	Explain provenance.	2023-11-22 14:18:50 -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	8993a9c4c1	Import MDA font.	2023-11-22 14:04:26 -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	2af6259963	Merge pull request #1213 from TomHarte/PITClock ... Standardise on the PIT clock as the definition of time.	2023-11-21 22:51:14 -05:00
Thomas Harte	24d0caf8e7	Fix Swift conditionality.	2023-11-21 22:48:26 -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	0344af986c	Try to avoid having to edit this constantly.	2023-11-21 22:02:36 -05:00
Thomas Harte	6329a1208a	Adopt PIT-centric timing.	2023-11-21 22:02:24 -05:00
Thomas Harte	c11d3b61d6	Merge pull request #1209 from TomHarte/SupportChipsAplenty ... Add various other PC chips into the mix.	2023-11-21 21:53:29 -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