Zane Kaminski
a2eecf4475
Separated CSDBEN
2020-01-26 15:13:37 -05:00
Zane Kaminski
85e3eb627d
Removed state counter reset
2019-12-21 01:46:05 -05:00
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
21f18c14db
Recompiled just to be sure
2019-10-13 21:18:41 -04:00
Zane Kaminski
4d12361823
Switch library location, fixed datasheet fields
2019-10-13 02:04:29 -04:00
Zane Kaminski
1f0596291c
Update GR8RAM-render.png
2019-10-13 02:04:13 -04:00
Zane Kaminski
4d8af3b074
Merge branch 'dev' of https://github.com/ZaneKaminski/GR8RAM into dev
2019-10-13 01:42:28 -04:00
Zane Kaminski
1bf5ce4be3
New schematic revision
2019-10-13 01:40:49 -04:00
Zane Kaminski
67399312b6
Register reset/initial values set syntax changed
2019-10-13 01:40:25 -04:00
Zane Kaminski
a45778b440
Put gerber files back
2019-10-13 01:39:20 -04:00
Zane Kaminski
cf16763591
24-bit counter, CAS fixed
2019-10-11 20:34:51 -04:00
Zane Kaminski
2382fdfda6
Made AddrH high bit variable with mode input
2019-09-07 21:16:23 -04:00
Zane Kaminski
b0a001aa58
Clarified assignments
2019-09-06 17:26:42 -04:00
Zane Kaminski
7ccb2b670e
Merge branch 'dev' of https://github.com/ZaneKaminski/GR8RAM into dev
2019-09-05 13:50:40 -04:00
Zane Kaminski
6dabfca306
added some disassembly of RamFactor
2019-09-05 13:50:38 -04:00
Zane Kaminski
47a4c012d7
Pipelined addition
2019-09-04 21:45:56 -04:00
Zane Kaminski
106df31f52
Trying again with RamFactor firmware
2019-09-02 20:56:37 -04:00
Zane Kaminski
a73cbf10ef
Clarifications and bugfixes, will try again
2019-09-02 01:42:07 -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
Zane Kaminski
029354ce8e
Submitted to JLCPCB
2019-07-30 17:11:31 -04:00
Zane Kaminski
fb35d7bd9b
Release candidate PCB
2019-07-21 17:53:22 -04:00
Zane Kaminski
9ba21040f4
Rough schematic and board layout
2019-06-25 19:44:54 -04:00
Zane Kaminski
6158eec9bd
Initial commit
2019-06-25 00:46:18 -04:00