11 Commits

Author	SHA1	Message	Date
Zane Kaminski	5437b524cc	Register Apple address bus on PHI0 rising edge	2021-04-21 20:06:56 -04:00
Zane Kaminski	d2dbdc8193	Revert "Updated slew rate/current strength assignments" ... This reverts commit 780fe32807.	2021-04-20 05:50:09 -04:00
Zane Kaminski	780fe32807	Updated slew rate/current strength assignments	2021-04-20 05:43:37 -04:00
Zane Kaminski	d8a5dc069d	idk	2021-04-11 15:39:19 -04:00
Zane Kaminski	fc2e875ac2	Works?	2021-04-03 03:44:42 -04:00
Zane Kaminski	fdbc92725a	Remove old CPLD stuff	2021-03-15 13:40:41 -04:00
Zane Kaminski	79dd794f45	New PLD revision ... For write operations, register data is latched and CAS signal becomes in the middle of S6, 70ns before the end of PHI0. This gives more write data setup time, which may be needed on the Apple II with the 1 MHz 6502.	2019-10-18 15:07:38 -04:00
Zane Kaminski	b0a001aa58	Clarified assignments	2019-09-06 17:26:42 -04:00
Zane Kaminski	47a4c012d7	Pipelined addition	2019-09-04 21:45:56 -04:00
Zane Kaminski	5b230c0966	1MB CPLD design seems to work, fails Apple BIST	2019-09-01 21:18:44 -04:00
Zane Kaminski	e78807ce85	CPLD firmware compiles	2019-08-31 22:55:04 -04:00