Search found 4 matches

by renzo
16 Dec 2022, 21:52
Forum: Kit assembly gallery
Topic: New Gigatron computer in Italy
Replies: 3
Views: 372

Re: New Gigatron computer in Italy

WARNING... just in case someone with passion for DIY, like me, uses my PCB photo as example. Today I received the keyboard with PS/2 plug and the microSD card, so I had the possibility to fully test the Pluggy Reloaded I built. When I posted the pictures I only had the possibility to try with the gi...
by renzo
11 Dec 2022, 20:46
Forum: Kit assembly gallery
Topic: New Gigatron computer in Italy
Replies: 3
Views: 372

New Gigatron computer in Italy

Hi all, this is to share with the forum my second build of Gigatron. The first one is the original kit with ROM v.1 and the beautiful case, that I like to keep untouched. I have assembled a second one, mostly from recycled parts, in order to play and experiments with it. I also added memory expansio...
by renzo
11 Dec 2022, 18:22
Forum: Hardware and software hacking
Topic: Double your RAM:
Replies: 18
Views: 15349

Re: Double your RAM:

Hi bmwtcu,

many thanks for the reply. I serched on the forum for a possible bug somewhere, but probably I didn't type the tricky words.
by renzo
10 Dec 2022, 01:01
Forum: Hardware and software hacking
Topic: Double your RAM:
Replies: 18
Views: 15349

Re: Double your RAM:

Hello, to expand the RAM size I installed the Alliance AS6C1008 chip.It is a 128Kx8 as the other one listed in the previous posts. I connected pin 30 and 32, pin 31 to A15 signal on pcb, and pin 2 to pin 16 (GND). Since pin2 is fixed to low level state (let's say low half 64k), I expected to see 64K...