Search found 6 matches

by bjchapm
24 Sep 2022, 09:56
Forum: Escape Meta Alt Control Shift
Topic: Old microprocessors
Replies: 1
Views: 219

Re: Old microprocessors

Thanks for sharing this really interesting article. :thumbsup:
by bjchapm
17 May 2022, 15:27
Forum: Hardware and software hacking
Topic: Gigatron Clone Ideas
Replies: 46
Views: 3882

Re: Gigatron Clone Ideas

This looks great. Very cool development.
by bjchapm
28 Mar 2022, 03:09
Forum: Hardware and software hacking
Topic: Seeking RAM for upgrade (US)
Replies: 9
Views: 1098

Re: Seeking RAM for upgrade (US)

Thanks everyone! I am now running with 64K of RAM (interestingly ROM 5A says 128K; the RAM is a 128K, but I am sure that only 64K is available). Thanks to lb3361 - the recommended RAM from Digi-key worked perfectly. Also, thanks to at67 for the instructions on how to connect the chip.
by bjchapm
24 Mar 2022, 16:51
Forum: Hardware and software hacking
Topic: Seeking RAM for upgrade (US)
Replies: 9
Views: 1098

Re: Seeking RAM for upgrade (US)

You can get a 128KB one and wire the extra address pins together. https://www.digikey.com/en/products/detail/alliance-memory-inc/AS6C1008-55PCN/4234576 Thank you for this suggestion! I did not realize this part was compatible. I've ordered two - they are $4.00 each (plus shipping) for anyone else w...
by bjchapm
23 Mar 2022, 18:25
Forum: Hardware and software hacking
Topic: Seeking RAM for upgrade (US)
Replies: 9
Views: 1098

Seeking RAM for upgrade (US)

Hello all, I'm looking for the HM628128LP-7 to upgrade my Gigatron to 64K, but I haven't found it at Mouser or Digi-key. I have found listings on Ebay, but they are shipping from China. Does anyone have any suggestions for US sources? Also, should I be searching for something else instead? Many than...
by bjchapm
18 Feb 2022, 20:20
Forum: Kit assembly gallery
Topic: Gigatron in the frozen Northeast US
Replies: 3
Views: 653

Gigatron in the frozen Northeast US

Hello, all! Here's a quick picture of my Gigatron, built from a kit offered by RetroTechLyfe here in the US. Thank you to Marcel and Walter and everyone else in this amazing community. I haven't done anything like this since I was a kid (I had an OSI Challenger way back in the day), and it has just ...