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I modified the code so that it would overwrite the whole chip with 0xea. Turns out when i change the break condition in the erase loop to 32767 to match the size of the eeprom it goes into a seemingly…
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[VGA generator.zip](https://github.com/user-attachments/files/16354111/VGA.generator.zip)
i am following these schematics
https://eater.net/vga
Fixed, the issue was that the QA's of the 74161…
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The schematic looks a bit interesting in KiCAD 6. Lots of unconnected pins etc. Of course I also had to remap symbols.
This is the ERC errors:
ERC report (Wednesday, 26 October 2022 at 08.41.12…
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Hi,
I've received several EEPROMs from Ebay, but I'm only able to program one of seven AT28C256.
Of course these are weird fakes or old dead ones, but I have tried to software erase those or disable…
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Hi there,
I've been searching far and wide but haven't come around a solution to burn W27C512 EEPROMs under linux. Your ch341eeprom probably comes the closest, just lacking support for these 28-pin E…
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I am trying to burn an image to a 28C256, but it is not working.
MacOS Sonoma 14.3
minicom version 2.9
TommyPROM 3.3 - 28C series EEPROM
The commands I am running:
1. `minicom`
2. `w` (I h…
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Hi,
Was wondering if anyone has tried this chip? I have added a line to `TommyPROM.ino`
```
PromDevice28C prom(2 * 1024L, 0, 10, true); // 28C16 with no page writes
```
However I'm not havi…
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Hi Tom, I wonder if you can offer any advice on my issue.
I'm on a Mac. I have installed lrzsz using Brew. I then use the screen command to connect to the TommyPROM. Press w and enter, then press c…
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Beta 1 did not support 24 pin chips in the EXPANSION socket. It was originally only meant to support a 32k RAM chip, and allow people to play with "paging" and effectively give a full 64k of RAM for t…
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Poking, zapping and filling works fine, but when I send a file through Xmodem (minicom), atleast the first page (which has the entire program) is just not written at all, it does fill the entire EEPRO…