Roadmap and status of Gigatron TTL

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veekoo
Posts: 70
Joined: 07 Jun 2021, 07:07

Re: Roadmap and status of Gigatron TTL

Post by veekoo »

I would rather see Raspberry Pi taking over some functions to gain in processing power, graphics and sound.
lb3361
Posts: 188
Joined: 17 Feb 2021, 23:07

Re: Roadmap and status of Gigatron TTL

Post by lb3361 »

You mean the AVR chip in the Pluggy?

The technical problem is that the interface between then is very slow: max 30kb/s downloading and 60b/s uploading.

Then there is the Pluggy itself. What's the point of adding a microprocessor to the computer without microprocessor. Rather than assuming a pluggy, I would rather assume a minimal 128k extension (no complex IC needed) whose SPI port(s) can reach 180kb/s both ways.
at67
Posts: 486
Joined: 14 May 2018, 08:29

Re: Roadmap and status of Gigatron TTL

Post by at67 »

The maximum download speed is 3900bytes/s and maximum upload speed is 7.5bytes/s for any of the Arduino solutions, (including Pluggy).

I just realised you probably meant bits per second, so same answers :)
veekoo
Posts: 70
Joined: 07 Jun 2021, 07:07

Re: Roadmap and status of Gigatron TTL

Post by veekoo »

In a Commodore Amiga 500, you can use PiStorm to replace CPU and it's a raspberry pi with mc6800x0 emulation software. Maybe it also gives HDMI output. Offcourse it has all the bottlenecks of a Amiga, but slightly faster.

Maybe it doesn't make any sense with TTL computer. We should be using certain components that don't offend the machine.
veekoo
Posts: 70
Joined: 07 Jun 2021, 07:07

Re: Roadmap and status of Gigatron TTL

Post by veekoo »

I am considering of updating GigatronTTL 64K DEVROM with latest DEVROM, PluggyReloaded firmware, GLCC compiler and compiling all programs again. Is this good spot to do it or is there some unfinished work there?
Last update was 14.2.2022

EDIT: I did update on 1.5.2022. Everything works smoohtly as before. In my own programs the fractals and the lotto, the sources haven't changed lately so I only recompiled them to -rom=dev option. I will share them in github.

EDIT: The new mandelbrot provided in rom clocks 3 minutes. You don't need to update the rom for this only use the proper mandebrot.gt1
veekoo
Posts: 70
Joined: 07 Jun 2021, 07:07

Re: Roadmap and status of Gigatron TTL

Post by veekoo »

veekoo wrote: 15 Feb 2022, 13:11 In a Commodore Amiga 500, you can use PiStorm to replace CPU and it's a raspberry pi with mc6800x0 emulation software. Maybe it also gives HDMI output. Offcourse it has all the bottlenecks of a Amiga, but slightly faster.

Maybe it doesn't make any sense with TTL computer. We should be using certain components that don't offend the machine.
I have now seen some ground breaking ideas which support my Raspberry Pi -idea. RPI would run GFX, SFX, IO, RAM, ROM, SDCARD, WIFI, LAN etc. and there would be the "CPU" part using ICs. Mostly the idea is from BAD6502 that 6502 in a PCB is added with RPI and RPI emulates all the different components which are in VIC-20, C64, Commander X16. Same idea would be Z80 and RPI to run various Z80 based retro computer software.

I believe most of the RPI resources would be used to emulate various parts of the Gigatron TTL. It would be huge leap (not a Gigatron TTL clone) everything would upgraded to be "better". Same ICs components would be used, but it would require new PCB and connector to RPI. It would have same functionality as the Gigatron TTL with all added extra cards emulated and software support.
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