107 Commits

Author	SHA1	Message	Date
Thomas Harte	ad4afcdcd5	Switch stepping direction. ... Empirically, based on the actions of Kickstart, and assuming my confusion is because the relevant signal is active low.	2021-10-05 15:23:48 -07:00
Thomas Harte	2cf5bcc5db	Clarify logic somewhat.	2021-10-05 15:20:05 -07:00
Thomas Harte	1180ad7662	Disables a couple of now-trustworthy LOGs.	2021-10-05 06:51:47 -07:00
Thomas Harte	5463cd1ae3	Attempts to support stepping and head selection.	2021-10-05 06:36:17 -07:00
Thomas Harte	647ec770ce	Implements motor latching, drive ID shift registers.	2021-10-05 05:12:01 -07:00
Thomas Harte	e47bec2e65	Switch CIA B ports over.	2021-10-05 03:38:11 -07:00
Thomas Harte	674941abdf	Starts to add a disk controller.	2021-10-04 16:45:05 -07:00
Thomas Harte	b3f0ca39ed	Adds some unused drives.	2021-10-04 08:12:13 -07:00
Thomas Harte	5ccb512883	Moves the CIAs into the Chipset class. ... This reflects the routing of interrupt signals for now, but also prepares for the addition of disk drives.	2021-10-04 06:44:54 -07:00
Thomas Harte	a282a51673	Remove last of the direct printf'ing.	2021-09-30 02:42:59 -04:00
Thomas Harte	b7b13e20d1	Single column blits should use both masks.	2021-09-29 22:49:35 -04:00
Thomas Harte	402fa41bc0	Corrects initial error value.	2021-09-29 22:19:17 -04:00
Thomas Harte	0b9ebafc0f	Flip bit deserialisation order.	2021-09-28 22:12:13 -04:00
Thomas Harte	140e24ef15	Grab further copy flags.	2021-09-28 22:11:58 -04:00
Thomas Harte	ffcd2ea10c	Attempts more properly to implement line mode.	2021-09-28 21:39:09 -04:00
Thomas Harte	cb460de94d	Makes bad first attempt at a Bresenham inner loop.	2021-09-27 22:06:00 -04:00
Thomas Harte	f6624bf776	Edges mildly closer to line output.	2021-09-26 19:18:12 -04:00
Thomas Harte	b4b6c4d86f	Attempts to support left and right masks.	2021-09-26 18:42:08 -04:00
Thomas Harte	759689ff31	Fix line mode flag, add busy status.	2021-09-26 18:16:00 -04:00
Thomas Harte	c4ab2bbeed	Hard-code fetch window width. For now.	2021-09-23 22:06:13 -04:00
Thomas Harte	42ef459e20	Resolve resting values.	2021-09-23 22:05:59 -04:00
Thomas Harte	cad1a9e0f1	Correct bit test.	2021-09-23 20:42:31 -04:00
Thomas Harte	f1d514470d	Add note to future self.	2021-09-23 20:29:39 -04:00
Thomas Harte	9a7a54f22f	Take alternative guess as to meaning of 'use' bits.	2021-09-23 18:42:12 -04:00
Thomas Harte	137d1c61bd	Allow for channel enables and blitting direction.	2021-09-23 18:38:37 -04:00
Thomas Harte	adc071ed7a	Fix: modulos are 15-bit signed, the minterms are also in regular BLTCON0.	2021-09-23 18:30:35 -04:00
Thomas Harte	e06f470044	Ensure no implicit conversion from int to IntT.	2021-09-23 18:30:04 -04:00
Thomas Harte	ab69fe56c9	Take a first shot at magical instant blitting.	2021-09-23 18:13:51 -04:00
Thomas Harte	60bad22a91	Correct fetch window.	2021-09-23 18:13:24 -04:00
Thomas Harte	7092429f7c	Added some notes to self on line mode.	2021-09-20 23:08:26 -04:00
Thomas Harte	fa800bb809	Introduces code for minterm application.	2021-09-20 19:13:23 -04:00
Thomas Harte	e15f1103a0	Takes a shot at low resolution shifting.	2021-09-20 19:00:52 -04:00
Thomas Harte	a4263b5a8c	Ties bitplane collection to line position. ... Outgoing bug: incrementing the video relative offset too often, due to cycles that are discovered to be CPU-targetted.	2021-09-19 21:55:45 -04:00
Thomas Harte	245b7baa61	Moves the Copper into its own file.	2021-09-16 21:17:23 -04:00
Thomas Harte	0eeaaa150a	Correct Copper start address.	2021-09-16 21:01:37 -04:00
Thomas Harte	692d87f446	Attempts to restrict blitter slot allocation.	2021-09-16 19:56:28 -04:00
Thomas Harte	6572efe2a7	Clarifies word addressing.	2021-09-16 08:24:52 -04:00
Thomas Harte	8aac2bd029	Stubs in serial port status.	2021-09-14 21:53:07 -04:00
Thomas Harte	add11db369	Factors out DMADevice, which is now a parent of Blitter.	2021-09-14 20:51:32 -04:00
Thomas Harte	fd70f7ad43	Attempts to make pixel content observeable.	2021-09-08 20:57:26 -04:00
Thomas Harte	6e034c9b7f	At least manages to place a pixel region on screen. ... Albeit that I've suddenly realised that I've failed properly to think about high-res versus low-res.	2021-08-11 20:31:37 -04:00
Thomas Harte	52e375a985	Move towards playfield decoding.	2021-08-11 18:47:35 -04:00
Thomas Harte	10a5e7313f	Makes a buggy first attempt at bitplane data collection.	2021-08-10 21:28:48 -04:00
Thomas Harte	ec9cb21fae	Starts towards bitplane collection.	2021-08-10 19:01:41 -04:00
Thomas Harte	fdd02ad6a6	Neaten, slightly.	2021-08-10 09:20:34 -04:00
Thomas Harte	76e9fcc94a	Obey blitter DMA-enable mask.	2021-08-10 09:19:15 -04:00
Thomas Harte	e412927415	Logs a bit more from the Blitter, gives it access to slots.	2021-08-10 07:17:01 -04:00
Thomas Harte	dda154c7c6	Adds nonsense disk reads, which seems to lead to bitplane and blitter requests. ... Progress, at last!	2021-08-09 20:31:14 -04:00
Thomas Harte	9215535bee	Adds a container for the disk controller. ... Thereby appears to prove that my Amiga is getting as far as attempting to load from floppy.	2021-08-09 17:35:09 -04:00
Thomas Harte	1502c4530e	Takes a further step towards real timing.	2021-08-08 21:52:28 -04:00