62 Commits

Author	SHA1	Message	Date
Thomas Harte	befe2c2929	Adds floppy drive activity indicators.	2019-11-03 21:57:54 -05:00
Thomas Harte	e9965c2738	Obeys stated memory size.	2019-11-03 21:18:17 -05:00
Thomas Harte	48b0d8c329	Adds bus req/ack to the DMA controller; hacks support into the ST.	2019-11-03 21:11:25 -05:00
Thomas Harte	4dbd2a805a	Nudges closer to DMA support.	2019-11-03 17:24:36 -05:00
Thomas Harte	20bf425f98	Drive select lines are active low.	2019-11-02 23:37:56 -04:00
Thomas Harte	0567410bcf	Attempts to start getting the WDC working.	2019-11-02 23:26:42 -04:00
Thomas Harte	6d1e09ba55	Connects up the AY to floppy drive/side selection.	2019-11-02 23:04:08 -04:00
Thomas Harte	f40dbefa67	Implements most of keyboard input.	2019-11-02 22:30:02 -04:00
Thomas Harte	f93cdd21de	Reverses bit order. ... So, for the first time: a green desktop.	2019-11-02 21:53:04 -04:00
Thomas Harte	e1dc3b1915	Reverses mouse buttons. ... So I can now navigate the disk-less GEM desktop and click on things.	2019-11-02 21:38:57 -04:00
Thomas Harte	cbf25a16dc	Adds relative mouse motion input.	2019-11-02 21:25:45 -04:00
Thomas Harte	bf7e9cfd62	Pulls the intelligent keyboard into its own file.	2019-11-02 19:47:44 -04:00
Thomas Harte	a67e0014a4	Fixes video base address and mono/colour monitor value. ... Now I see a GEM desktop. In blue.	2019-11-02 19:36:15 -04:00
Thomas Harte	c070f2100c	Attempts to regularise data bus access.	2019-11-01 23:01:06 -04:00
Thomas Harte	75e34b4215	Reacts to no acknowledgement.	2019-10-31 21:00:05 -04:00
Thomas Harte	731dc350b4	Adds sometime real-time clocking for DMA.	2019-10-30 22:59:32 -04:00
Thomas Harte	635e18a50d	Ensures the MFP requests and receives real-time clocking when needed.	2019-10-30 22:42:06 -04:00
Thomas Harte	1c154131f9	Expands size of storage in Cycles/HalfCycles; adjusts widely to compensate.	2019-10-29 22:36:29 -04:00
Thomas Harte	1135576a3a	Comments in slightly more detail.	2019-10-28 22:12:56 -04:00
Thomas Harte	1d790ec2a9	Adds the option for a clock conversion to JustInTimeActor and slows the MFP's clock rate.	2019-10-28 21:35:10 -04:00
Thomas Harte	0f2d72c436	Ensures receipt of output line changes.	2019-10-28 21:21:53 -04:00
Thomas Harte	95d3b6e79f	Adds a through route for the FDC interrupt line.	2019-10-28 21:13:21 -04:00
Thomas Harte	d44734d105	Attempts a fuller setting of GPIP inputs.	2019-10-27 22:39:21 -04:00
Thomas Harte	1aaa6331a0	Stores and returns video mode.	2019-10-27 22:39:00 -04:00
Thomas Harte	0cb19421e8	Adds prefix to mouse position response.	2019-10-27 21:46:03 -04:00
Thomas Harte	36a9a5288b	Adds drives to the FDC.	2019-10-26 22:39:11 -04:00
Thomas Harte	ac39fd0235	Starts work on the DMA controller.	2019-10-26 21:33:57 -04:00
Thomas Harte	ecc0cea5a1	Added a potential branch for the newer TOS memory map.	2019-10-26 16:52:06 -04:00
Thomas Harte	eae11cbf17	Adds a dummy response for mouse interrogation.	2019-10-26 16:14:24 -04:00
Thomas Harte	2207638287	Adds hsync and vsync interrupts.	2019-10-25 22:42:13 -04:00
Thomas Harte	872897029e	Attempts a complete wiring of 68901 interrupts.	2019-10-25 22:36:01 -04:00
Thomas Harte	51b4b5551d	Actually, I think the 6850 is active low for interrupts.	2019-10-24 22:37:53 -04:00
Thomas Harte	092a61f93e	Does a better job of having just 512kb.	2019-10-21 23:10:30 -04:00
Thomas Harte	e30ba58e0d	Attempts to wire ACIA interrupt signals into the MFP.	2019-10-21 23:02:30 -04:00
Thomas Harte	83d73fb088	The keyboard now responds to a reset on its serial line.	2019-10-20 23:13:44 -04:00
Thomas Harte	75c3e2dacd	Adds basic, incomplete dispatcher for the intelligent keyboard.	2019-10-20 23:07:19 -04:00
Thomas Harte	cf07982a9b	Ensures good serial line and ACIA behaviour. ... Next stop: having the intelligent keyboard react.	2019-10-20 22:10:05 -04:00
Thomas Harte	313aaa8f95	Silences temporarily.	2019-10-20 20:38:56 -04:00
Thomas Harte	696af5c3a6	Starts to transfer serial line decoding logic into the line itself.	2019-10-20 20:38:56 -04:00
Thomas Harte	9a8352282d	Mostly but not quite fixes serial work.	2019-10-20 20:38:55 -04:00
Thomas Harte	34075a7674	Attempts to tie an intelligent keyboard to the other end of its serial line.	2019-10-20 20:38:55 -04:00
Thomas Harte	ff62eb6dce	The ACIA actually has two clocks, though on an ST they're both 500,000 Hz.	2019-10-20 20:38:55 -04:00
Thomas Harte	374439693e	Ensures serial lines know their writer's clock rate.	2019-10-20 20:38:55 -04:00
Thomas Harte	c4ef33b23f	JustInTimeActors can now specify a clock divider.	2019-10-20 20:38:55 -04:00
Thomas Harte	4e5b440145	Attempts mostly to implement 6850 output.	2019-10-20 20:38:55 -04:00
Thomas Harte	97d44129cb	Ensures all 16 data lines reach the video.	2019-10-20 20:38:55 -04:00
Thomas Harte	b0f5f7bd37	Attempts to start producing actual video.	2019-10-20 20:38:55 -04:00
Thomas Harte	a59ec9e818	Provides a token something where DMA should be.	2019-10-20 20:38:55 -04:00
Thomas Harte	4ead905c3c	Adds an empty shell for the ACIA.	2019-10-20 20:38:55 -04:00
Thomas Harte	127bb043e7	Adds enough logic to advance to an ACIA access error.	2019-10-20 20:38:55 -04:00