Search found 57 matches

by bmwtcu
27 Dec 2020, 17:44
Forum: Escape Meta Alt Control Shift
Topic: Merry Christmas and a happy 2020!
Replies: 5
Views: 3136

Re: Merry Christmas and a happy 2020!

Nice! (Belated) Merry Christmas to all!
by bmwtcu
24 Dec 2020, 01:49
Forum: Escape Meta Alt Control Shift
Topic: Sell Gigatron?
Replies: 12
Views: 2469

Re: Sell Gigatron?

I believe the files were for Kicad 4. I recall that the first time you open it, you need to jump through some hoops to update library shapes, but I remember it being fairly automated and then you can save it as a Kicad 5 project. I think it was something like https://www.youtube.com/watch?v=mOM6bf5X...
by bmwtcu
16 Dec 2020, 02:14
Forum: Escape Meta Alt Control Shift
Topic: Gigatron ASIC and the Gametron Handheld
Replies: 28
Views: 8414

Re: Gigatron ASIC?!?

Cool, thanks at67! I'll give it a shot to see if it fits.
by bmwtcu
15 Dec 2020, 21:38
Forum: Escape Meta Alt Control Shift
Topic: Gigatron ASIC and the Gametron Handheld
Replies: 28
Views: 8414

Re: Gigatron ASIC?!?

Minor update on this. I missed the 11/30 shuttle. I was dependent on OpenRAM to generate the 64kx16 "ROM" and 64kx8 RAM for the design, but unfortunately they are still ironing out bugs and OpenRAM was not working at the time that the shuttle was launched. I tried to implement it in DFFs a...
by bmwtcu
21 Nov 2020, 22:28
Forum: Kit assembly gallery
Topic: My Gigatron! It very almost works! (Help!)
Replies: 7
Views: 2133

Re: My Gigatron! It very almost works! (Help!)

Marcel had originally designed the Gigatron to support a 74LS244 which would be a drop in replacement for the 74HC595 IC to do the same thing being proposed above. The software doesn't even have to be modified to support sampling the 8 (parallel) push-buttons as long as you adhere to the same order ...
by bmwtcu
04 Nov 2020, 00:03
Forum: Escape Meta Alt Control Shift
Topic: Gigatron ASIC and the Gametron Handheld
Replies: 28
Views: 8414

Re: Gigatron ASIC?!?

The NRE goes up exponentially with smaller nodes, but the older nodes are still reasonably cost effective. Regretfully, I never did get very far with this. While I do have a working prototype on FPGA, and got the OpenLANE toolchain installed, things suddenly got a lot busier at work starting August....
by bmwtcu
08 Oct 2020, 23:42
Forum: Kit assembly gallery
Topic: Finding parts?
Replies: 17
Views: 5004

Re: Finding parts?

Walter, would you happen to still have the gerbers for the 4-layer variant of the PCB? Thanks!
by bmwtcu
05 Oct 2020, 11:40
Forum: Kit assembly gallery
Topic: Finding parts?
Replies: 17
Views: 5004

Re: Finding parts?

I believe OSHPark makes you PCBs in any color, as long as it's purple.
by bmwtcu
17 Sep 2020, 10:44
Forum: Kit assembly gallery
Topic: My Gigatron build
Replies: 10
Views: 3607

Re: My Gigatron build

... I found a 10-pin R2R 10K network on eBay which I believe will work by cutting off the extra 4 pins (7-10). I suspect that won't work since the last 2 pins are wired differently from the rest of the SIP. I also built one a while back out of discrete SMT resistors because I couldn't think of a be...
by bmwtcu
15 Sep 2020, 21:07
Forum: Kit assembly gallery
Topic: My Gigatron build
Replies: 10
Views: 3607

Re: My Gigatron build

I gotta say, that black PCB looks really sharp!