Search found 57 matches

by bmwtcu
03 Sep 2021, 17:12
Forum: Hardware and software hacking
Topic: Pluggy Reloaded
Replies: 143
Views: 52680

Re: Pluggy Reloaded

Hi, yes, I have enough parts for a few more kits. It's probably easiest to just DM me on the Gigatron Discord at https://discord.com/invite/XywGzy5K88 but I will try sending you a DM here as well.
by bmwtcu
28 Aug 2021, 10:00
Forum: Kit assembly gallery
Topic: Gigatron in Shepparton Australia and detailed build info
Replies: 6
Views: 252

Re: Gigatron in Shepparton Australia and detailed build info

Neat in-line BabelFish hack! I'm going to have to try an in-line Pluggy Reloaded now:P
by bmwtcu
28 Aug 2021, 09:37
Forum: Hardware and software hacking
Topic: Video Repeater
Replies: 20
Views: 1526

Re: Video Repeater

Hans, that was Marcel's youtube channel, which explains why you haven't heard back. Not sure what you're specifically looking for but he went over it in some detail in the RAM Expander log https://hackaday.io/project/164176-gigatron-io-and-ram-expander . I'd imagine Leon would be familiar with the c...
by bmwtcu
26 Aug 2021, 20:28
Forum: Hardware and software hacking
Topic: whole board with 74LS
Replies: 7
Views: 510

Re: whole board with 74LS

Did you use a 74LS377 or 74HCT377 for the output register? I believe you need different video DAC resistors per the schematic. The 750/1500 ohm values are meant for HCT
by bmwtcu
17 Aug 2021, 22:58
Forum: Hardware and software hacking
Topic: Overview of hard/software subprojects
Replies: 8
Views: 3352

Re: Overview of hard/software subprojects

I assume you are talking about running on real hardware vs running on the emulator. If you have a Pluggy Reloaded, that's probably the most convenient way. Just copy the .gt1 file onto a FAT16/32 formatted SD Card and launch it from the SD Card Browser. Otherwise you can still load it if you have an...
by bmwtcu
01 Aug 2021, 17:31
Forum: Kit assembly gallery
Topic: My Gigatron build
Replies: 7
Views: 493

Re: My Gigatron build

The audio DAC is an R2R resistor ladder and isn't a simple resistor array, but you can literally copy the symbol on the Gigatron schematic and build one from 10k/20k resistors. In my experience, unactivated flux is conductive, so perhaps that was the original problem you had.
by bmwtcu
29 Jul 2021, 20:07
Forum: Hardware and software hacking
Topic: Pluggy Reloaded
Replies: 143
Views: 52680

Re: Pluggy Reloaded

@at67 I think he's using the NOROM BabelFish which should work with the v5a ROM. @wbushby Do you have a way to measure voltage/current on 5V? From your description, I'm suspecting that your 5V rail droops to <4.5V when you're accessing the SDCard and causes your reset chip to kick in. Either that or...
by bmwtcu
29 Jul 2021, 09:04
Forum: Hardware and software hacking
Topic: Pluggy Reloaded
Replies: 143
Views: 52680

Re: Pluggy Reloaded

Is the SD card formatted to FAT16/32? Did you already check for shorts on the SDCard adapter/Pro Micro SPI pins? What version ROM and BabelFish are you using? See https://forum.gigatron.io/viewtopic.php?f=4&t=279 for valid combinations and where to get them. Where is the jumper you are referring...
by bmwtcu
18 Jul 2021, 23:50
Forum: Hardware and software hacking
Topic: tutorial about programming ATTINY85 with Arduino Nano
Replies: 8
Views: 552

Re: tutorial about programming ATTINY85 with Arduino Nano

https://circuitdigest.com/microcontroller-projects/programming-attiny85-microcontroller-ic-using-arduino https://github.com/kervinck/gigatron-rom/blob/master/Utils/BabelFish/BabelFish.ATtiny85_fuses.txt Googled these, but haven't tried it myself. I highly recommend checking out norgate's Pluggy Relo...
by bmwtcu
01 Jun 2021, 11:15
Forum: Hardware and software hacking
Topic: Gigatron on an FPGA
Replies: 10
Views: 5020

Re: Gigatron on an FPGA

I don't think he/she has ever logged back in since that single post for this thread. Are you talking about the image not scrolling fully to the left and getting stuck? It sounds like the Jupiter issue that I encountered with ROMv3 back in 2019. Like you it only affected "Pictures" and all ...