Search found 84 matches

by walter
16 Sep 2020, 06:26
Forum: Kit assembly gallery
Topic: My Gigatron build
Replies: 8
Views: 132

Re: My Gigatron build

I hope you understand, but I cannot give support on Gigatrons bought elsewhere..
by walter
15 Sep 2020, 21:18
Forum: Kit assembly gallery
Topic: My Gigatron build
Replies: 8
Views: 132

Re: My Gigatron build

The first picture I see of a built Budgetronic Gigatron. Thanks for sharing!
by walter
13 Sep 2020, 11:58
Forum: Hardware and software hacking
Topic: Budgetronics through holes pins for a ZIF socket are too narrow
Replies: 4
Views: 167

Re: Budgetronics through holes pins for a ZIF socket are too narrow

I'm not sure if there are ZIF sockets with smaller pins. I have a few, that have pins that just fit in the holes. You need some force to get it into the board, and the pins need to be perfectly aligned in order to get it in. AFAIK the Budgetronics PCB is the open hardware version of the board, with ...
by walter
18 Aug 2020, 17:58
Forum: Kit assembly gallery
Topic: Finding parts?
Replies: 2
Views: 325

Re: Finding parts?

4606X-R2R-103LF -- Resistor array for audio.. should I try using one of the 9 pin versions and just hack it? MP062-E -- Clock crystal, are there easier to find replacements? You could leave out the resistor array, the Gigatron will still work, but will not have sound. You could solder the array you...
by walter
18 Aug 2020, 17:52
Forum: Hardware and software hacking
Topic: Ye Olde Gigatron and Gigatronski
Replies: 8
Views: 692

Re: Ye Olde Gigatron and Gigatronski

I couldn't get it to work. The clock signal looked very bad on the oscilloscope. For Ye Olde Gigatron, it would be nice to use a 7404/74LS04. I even have a 74H04. But that's for when I find the time. I don't know what changed, but suddenly the system is a lot more stable. I had it running with Mande...
by walter
17 Aug 2020, 14:49
Forum: Hardware and software hacking
Topic: Ye Olde Gigatron and Gigatronski
Replies: 8
Views: 692

Re: Ye Olde Gigatron and Gigatronski

Since I gave a talk about the Gigatron at Neuron hackerspace in Moscow, I wanted to make a Gigatron with old Soviet chips. Unfortunately, I did not get any from my new Russian friends :-) By the way, Pavel and others of Neuron Hackspace have a wonderful "Flipper Zero" kickstarter project. But anyway...
by walter
14 Aug 2020, 16:44
Forum: Hardware and software hacking
Topic: Ye Olde Gigatron and Gigatronski
Replies: 8
Views: 692

Re: Ye Olde Gigatron and Gigatronski

Thanks. I found some on ePay. I got a CET (Chino-Excel Technology) CE4069UB from 1987 and a modern NXP HEF4069UBP. Neither works.. The scope shows that it is oscillating, but the output voltage is very low. The propagation delay of these is about the same as the 74C04 according to the specification,...
by walter
13 Aug 2020, 10:49
Forum: Hardware and software hacking
Topic: Pluggy Reloaded
Replies: 83
Views: 25635

Re: Pluggy Reloaded

Fixed the permissions of Vyvvyan, also fixed norgate's permissions.
Older users apparently are missing some options.
by walter
09 Aug 2020, 09:05
Forum: Hardware and software hacking
Topic: Ye Olde Gigatron and Gigatronski
Replies: 8
Views: 692

Ye Olde Gigatron and Gigatronski

Hi all, The Gigatron was designed to run with old TTL chips. The kits were supplied with modern, CMOS type chips, but the goal was to keep it TTL compatible. Marcel had already started sourcing some old TTL components, most notably an old 70ns SRAM. I've taken over that task, which has led to the cr...