Search found 57 matches

by bmwtcu
03 Aug 2020, 11:02
Forum: Hardware and software hacking
Topic: Invader
Replies: 17
Views: 6571

Re: Invader

Thanks much to both of you for the information. Makes sense now.
by bmwtcu
03 Aug 2020, 07:44
Forum: Hardware and software hacking
Topic: Invader
Replies: 17
Views: 6571

Re: Invader

Amazing how much you squeezed out of the Gigatron! I spent more time than I care to admit playing this today. I did notice an anomaly playing with keyboard that I'm trying to make sense of. If you fire using the enter key, the player shifts a little to the right with each shot, which doesn't happen ...
by bmwtcu
20 Jul 2020, 16:43
Forum: Escape Meta Alt Control Shift
Topic: Gigatron ASIC and the Gametron Handheld
Replies: 28
Views: 8416

Re: Gigatron ASIC?!?

largenumabbrev.gif
largenumabbrev.gif (17.63 KiB) Viewed 2634 times
Hmm, let's see, what's smaller than Giga- (that isn't going to get me sued)? Kilotron?!? :lol:
Megatron.jpg
Megatron.jpg (18.86 KiB) Viewed 2634 times
If I can figure out how to, I'll start a poll, but keep the suggestions coming!
by bmwtcu
20 Jul 2020, 14:32
Forum: Escape Meta Alt Control Shift
Topic: Gigatron ASIC and the Gametron Handheld
Replies: 28
Views: 8416

Re: Gigatron ASIC?!?

Hi Walter, for me personally, it's a learning exercise. I have never done this before, so don't hold your breath if you're waiting for an ASIC kit :lol: . Given it's relative simplicity, I feel the Gigatron design affords me a good chance of actually getting something done in the short timeframe giv...
by bmwtcu
19 Jul 2020, 20:13
Forum: Escape Meta Alt Control Shift
Topic: Gigatron ASIC and the Gametron Handheld
Replies: 28
Views: 8416

Re: Gigatron ASIC?!?

Hi, Is there documentation on what end-user capability is available on the RISC-V supervisor? Firstly, I'm interested in whether there is:- 1) JTAG debug interface that can map/modify end-user 64kx16 NVM. The supervisor will load it's program from an external SPI flash. There will be some default p...
by bmwtcu
19 Jul 2020, 16:59
Forum: Escape Meta Alt Control Shift
Topic: Gigatron ASIC and the Gametron Handheld
Replies: 28
Views: 8416

Re: Gigatron ASIC?!?

Have you thought about SRAM and FLASH arbitration? i.e. How do the RISC-V and Gigatron arbitrate over the memory resources? Good question... It's not entirely clear to me if the RISC-V has on-die memory as well or will require an external NVM/RAM so I have some reading to do. Regardless, I was assu...
by bmwtcu
19 Jul 2020, 13:36
Forum: Escape Meta Alt Control Shift
Topic: Gigatron ASIC and the Gametron Handheld
Replies: 28
Views: 8416

Re: Gigatron ASIC?!?

So each of the chips comes with a RISC-V on board which is part of the standard harness that efabless would design, so I'm more confident in your ability to port Babelfish over to the RISC-V and do away with the Arduino all together than I am in my ability to slap on an AVR core from Opencores and h...
by bmwtcu
18 Jul 2020, 20:53
Forum: Escape Meta Alt Control Shift
Topic: Gigatron ASIC and the Gametron Handheld
Replies: 28
Views: 8416

Gigatron ASIC and the Gametron Handheld

UPDATE:- I mentioned in this thread that my long term goal was to build a Gigatron handheld. I wasn't actually planning on doing it so soon, but when at67 revealed the SDCard Browser ROM on 1/22/2021, I realized that I had all the pieces to make it a reality and have been working the last few weeken...
by bmwtcu
17 Jul 2020, 16:54
Forum: Escape Meta Alt Control Shift
Topic: 1000+ and Gigatron future
Replies: 6
Views: 2957

Re: 1000+ and Gigatron future

That's excellent news! I hope they will be able to continue supporting the community with hardware and software revision updates. While the original Gigatron should live on as-is, my wish list for "experimental kits" includes:- 1) 64k RAM by default 2) Integrating the SPI expander changes ...
by bmwtcu
01 Jul 2020, 20:07
Forum: Hardware and software hacking
Topic: Importing in Kicad 5
Replies: 6
Views: 2578

Re: Importing in Kicad 5

Kicad 5 prompted me to allow it to remap the libraries. I haven't checked in great detail but it looks like I am able to access all the schematic sheets in Eschema.