71 Commits

Author	SHA1	Message	Date
nino-porcino	c80b372ef2	put display din as dout as in the real PIA	2022-05-21 21:17:25 +02:00
nino-porcino	14464df7bc	reduce block RAM size when using TMS & SID	2022-05-21 15:05:45 +02:00
nino-porcino	e365dc059d	support CTRL keys; add ESC and other missing keys	2022-05-21 12:50:55 +02:00
nino-porcino	3542d776f2	attempt to use another clock source for SDRAM	2022-05-21 12:50:02 +02:00
nino-porcino	aa6042cabd	rename sdram_* into bus_*; use assign instead of always block; optional SDRAM at $4000	2022-05-21 12:48:14 +02:00
nino-porcino	5dfe5a041c	update TODO and format code	2022-05-07 11:41:49 +02:00
nino-porcino	0164f7da54	add PIA 6821 to project (not connected)	2022-05-07 11:41:22 +02:00
nino-porcino	a41bb35646	do not use system reset for display	2022-05-07 11:39:28 +02:00
nino-porcino	6c292189f9	remove Arlet's CPU reference	2022-05-07 11:38:37 +02:00
nino-porcino	e8b3a6fdc3	replace Arlet Ottens's 6502 with T65	2022-05-04 14:16:18 +02:00
nino-porcino	abfe99721e	code format	2022-05-04 14:15:09 +02:00
nino-porcino	44398c6668	fix typo in comment	2022-05-04 14:14:42 +02:00
nino-porcino	e9e60a5fb5	improve display accuracy	2022-03-19 11:03:38 +01:00
nino-porcino	b4d78e99e7	add debounce filter to cassette input	2022-03-15 17:05:48 +01:00
nino-porcino	076e8f48c6	fix SDRAM download of files	2022-03-15 17:05:23 +01:00
nino-porcino	2c21893f52	remove old code	2022-03-15 17:04:59 +01:00
nino-porcino	7d52fa05ea	halt CPU when downloading	2022-03-15 17:04:39 +01:00
nino-porcino	d24a1e174b	typo	2022-01-16 23:45:16 +01:00
nino-porcino	c2835287d5	make SID & TMS9918 optional	2022-01-15 12:56:56 +01:00
nino-porcino	c511cf1571	revert using empty power up display values	2022-01-15 10:57:00 +01:00
nino-porcino	de3902a843	update TODO list	2022-01-15 10:56:41 +01:00
nino-porcino	22f36f9187	more accurate cursor blinking	2022-01-15 10:56:21 +01:00
nino-porcino	cb7aeba5a9	add experimental SID 6581	2022-01-15 10:12:46 +01:00
nino-porcino	071afcf1b1	emulate crosstalk display artifact	2022-01-09 19:27:54 +01:00
nino-porcino	3e96858500	emulate RAM refresh lost CPU cycles	2022-01-09 17:38:47 +01:00
nino-porcino	72ab288cc7	more accurate power up display ram values	2022-01-09 17:38:13 +01:00
nino-porcino	1ca15c1f8a	do not reset keyboard registers	2022-01-09 17:37:41 +01:00
nino-porcino	c2223a3845	fix reset key bug	2022-01-08 14:39:07 +01:00
nino-porcino	6da2127cec	connect interrupt pin	2022-01-08 14:23:29 +01:00
nino-porcino	5445cd8335	remove char_seen from display; update todo	2022-01-08 13:53:02 +01:00
nino-porcino	d2db7d0b53	reset keyboard key; audio monitor option	2022-01-08 13:36:51 +01:00
nino-porcino	6526b236e3	prepare for refresh rate emulation	2022-01-08 12:28:06 +01:00
nino-porcino	c3e75e4859	update todo	2022-01-08 11:43:19 +01:00
nino-porcino	1e7fba455a	rename member	2022-01-08 00:15:43 +01:00
nino-porcino	41215bdd99	add tms9918, aci	2022-01-07 21:30:52 +01:00
nino-porcino	d76ecb6a34	rename vram into display_ram	2022-01-07 21:29:49 +01:00
nino-porcino	8610078267	format code	2022-01-07 21:28:11 +01:00
nino-porcino	dee2d5221b	cls key, slow down display to 1 char/frame	2022-01-06 10:45:54 +01:00
nino-porcino	624652c8ce	update todo	2022-01-05 21:40:31 +01:00
nino-porcino	c360c6ee7f	use 2 ram banks, attempt to make SDRAM work	2022-01-05 18:24:02 +01:00
nino-porcino	7f0d9280ca	update TODO	2022-01-05 18:23:26 +01:00
nino-porcino	2ed47e3d64	make ram module variable in size	2022-01-05 18:23:14 +01:00
nino-porcino	02cd9b5ecb	remove pixel clock	2022-01-02 22:20:44 +01:00
nino-porcino	b7a1632485	use sdram clock as sys_clock	2022-01-02 21:50:26 +01:00
nino-porcino	7f5f294496	introduce pixel_clken signal	2022-01-02 21:24:06 +01:00
nino-porcino	35876b4b7d	use multiple unison clocks	2022-01-02 16:24:57 +01:00
nino-porcino	d4c8ce6296	update comments	2022-01-02 15:34:44 +01:00
nino-porcino	d0a75bf54c	generate 7x8 sdram frequency	2022-01-02 15:34:31 +01:00
nino-porcino	8437979d3e	remove pwr_reset	2022-01-02 15:14:53 +01:00
nino-porcino	caa2268b82	sdram clock; move clock module to global	2022-01-02 15:05:23 +01:00