3005 Commits

Author	SHA1	Message	Date
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