Search found 40 matches

by gfernval
08 May 2022, 01:53
Forum: Hardware and software hacking
Topic: my Gigatron RAM and IO expansion does not work
Replies: 37
Views: 5246

Re: my Gigatron RAM and IO expansion does not work

- Does exist any keyboard key that when pressed bypass the loading of the SDcard and goes to the Gigatron menu when the Gigatron is reset?
- Does esist a rom for the gigatron running at 12.5MHz that has the screen centered like the normal 6.25MHz gigatron? The rom v3y is not centered
by gfernval
08 May 2022, 01:02
Forum: Hardware and software hacking
Topic: my Gigatron RAM and IO expansion does not work
Replies: 37
Views: 5246

Re: my Gigatron RAM and IO expansion does not work

Very simple, supply additional current to the board, the miniusb connector with the time (after many insertions) will not do good contact. The socket label Y1 XTAL is only a socket with pins 4 and 5 connected, if inserted (like showed in the photo), the gigatron works with the 6.25MHz crystal, but t...
by gfernval
07 May 2022, 21:26
Forum: Hardware and software hacking
Topic: my Gigatron RAM and IO expansion does not work
Replies: 37
Views: 5246

Re: my Gigatron RAM and IO expansion does not work

Very good, all my Sandisk SDcards work well now! You were right in saying "Including the gt1 into the ROM is better than including the gcl", because if include the gcl instead the gt1 a blank screen appears when trying to boot from a SDcard. Also modified my makefile to generate sdcard.rom...
by gfernval
06 May 2022, 21:41
Forum: Hardware and software hacking
Topic: my Gigatron RAM and IO expansion does not work
Replies: 37
Views: 5246

Re: my Gigatron RAM and IO expansion does not work

screen1.jpg I have done the tests, boot with a working SDcard, exchange the SDcard and press ENTER to mount card in slot 0 (Gigatron does not automatically mount the SDcard), then shows the error SD0: Mount failed. If I put a Sandisk SDcard in the Gigatron and power on the Gigatron, the screen show...
by gfernval
06 May 2022, 12:15
Forum: Hardware and software hacking
Topic: my Gigatron RAM and IO expansion does not work
Replies: 37
Views: 5246

Re: my Gigatron RAM and IO expansion does not work

I have compiled succesfully dev.rom after changing the makefile from dev.rom: Core/* Apps/*/* Makefile interface.json python3 Core/dev.asm.py\ . . Boot=Apps/CardBoot/CardBoot.gt1\ . . to dev.rom: Core/* Apps/*/* Makefile interface.json python3 Core/dev.asm.py\ . . Boot=Apps/CardBoot/CardBoot.gcl\ . ...
by gfernval
06 May 2022, 02:12
Forum: Hardware and software hacking
Topic: my Gigatron RAM and IO expansion does not work
Replies: 37
Views: 5246

Re: my Gigatron RAM and IO expansion does not work

It seems it works well, I have tested my SDcards, all SanDisk branded cards do not work (botton of the photo), but all the top SDcards of the photo work well. Why do not work SanDisk branded SDcards? Maybe such cards are slow? I have succesfully compiled from source code the files to make system.gt1...
by gfernval
05 May 2022, 13:02
Forum: Hardware and software hacking
Topic: my Gigatron RAM and IO expansion does not work
Replies: 37
Views: 5246

Re: my Gigatron RAM and IO expansion does not work

If you succeed in formatting a 2GB SDcard that works with Gigatron IO, send me an empty dd image of such 2GB SDcard. This image compressed with .zip will be under 2Mb in size, can be attached
by gfernval
05 May 2022, 11:42
Forum: Hardware and software hacking
Topic: my Gigatron RAM and IO expansion does not work
Replies: 37
Views: 5246

Re: my Gigatron RAM and IO expansion does not work

1gbsdcard.zip In https://github.com/lb3361/gigatron-os/tree/master/sys1 mentions "You must use other tools" and there is a link to guiformat.exe, I have used such tool to format with FAT32 a 1GB SDcard with 512 bytes/sector. In the attached .zip file (password of the .zip file is 1234) is...
by gfernval
05 May 2022, 09:48
Forum: Hardware and software hacking
Topic: my Gigatron RAM and IO expansion does not work
Replies: 37
Views: 5246

Re: my Gigatron RAM and IO expansion does not work

So I have to simply program an Arduino Uno with the babelfish.ino sketch after of course selecting Arduino Uno instead ATTiny85, right? This babelfish.ino is the same used in the pluggy mcplugface keuboard adapter for the Gigatron?
by gfernval
05 May 2022, 09:09
Forum: Hardware and software hacking
Topic: my Gigatron RAM and IO expansion does not work
Replies: 37
Views: 5246

Re: my Gigatron RAM and IO expansion does not work

https://gigatron.io/?page_id=1234 shows "Instead of typing them in, GTB programs can also be loaded into the Gigatron through an Arduino-compatible microcontroller and the sendFile.py program (Python 2.7) on a laptop or PC. More on that in https://gigatron.io/?page_id=574 section of the website...