Search found 6 matches

by frob
16 Jun 2020, 01:10
Forum: Hardware and software hacking
Topic: High resolution mode?
Replies: 38
Views: 17506

Re: High resolution mode?

I was just rereading this thread, trying to understand better the various ideas proposed earlier, and i thought i would check on the availability of the 74LS298 Marcel suggested earlier as an ideal solution. Well it turns out its still in full production at TI ( in DIP no less) and there are over 15...
by frob
16 Jun 2020, 00:21
Forum: Hardware and software hacking
Topic: New form factor Gigatron.
Replies: 9
Views: 4810

Re: New form factor Gigatron.

I know how challenging that can be. I actually do this kind of stuff for a living, and have done some insanely high-density layouts over the last bunch of years. Often I've had to rip up and reroute large areas of a board in order to squeeze in 'one last track' on a very dense board. Over the year's...
by frob
02 Jun 2020, 01:12
Forum: Hardware and software hacking
Topic: New form factor Gigatron.
Replies: 9
Views: 4810

Re: New form factor Gigatron.

Ken / Mike, this is really great work! i'm very interested in this Gigatron "branch", and would like to try to help develop it further. Has either of you built / tested one of these boards yet ? i'd be very interested to hear how that is going. Mike if you have PCB's i'd be interested in getting one...
by frob
01 Jun 2020, 22:30
Forum: Hardware and software hacking
Topic: High resolution mode?
Replies: 38
Views: 17506

Re: High resolution mode?

Like you i just recently discovered the Gigatron and fell down the same rabbit hole. at the same time i started studying other vintage computer video circuits and have an idea to do do something to vastly increase video resolution while also releasing the core CPU from the huge burden it has to outp...
by frob
01 Jun 2020, 21:47
Forum: Hardware and software hacking
Topic: In Circuit EPROM emulator and debugger
Replies: 12
Views: 4679

Re: In Circuit EPROM emulator and debugger

This is a fantastic addition for the Gigatron. well done! I am just ordering my Gigatron kit and already was scheming to do something similar. I'd like to modify your design a little to use a different RAM device: i found a non-volatile SRAM, which once programmed can be used stand-alone like the or...
by frob
01 Jun 2020, 20:28
Forum: Escape Meta Alt Control Shift
Topic: In memoriam Marcel
Replies: 16
Views: 4403

Re: In memoriam Marcel

Deeply saddened to hear this tragic news. My sincere sympathies and condolences go out to his family. Having just recently discovered Gigatron i'm sorry i've never had a chance to interact with him, but reading the forums over the past couple of weeks, I am in awe of his tremendous brilliance, passi...