TommyPROM
eeprom-programmer
TommyPROM | eeprom-programmer | |
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34 | 18 | |
139 | 649 | |
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7.9 | 0.0 | |
6 days ago | over 2 years ago | |
Logos | C++ | |
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TommyPROM
- Antique telecommunications device with keypad, speaker, and printout found at shop with a note attached
- EEPROMs not working
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Cannot disable write protect on AT26C64B EEPROM
I have tried the script from u/nib85 from his github here (https://github.com/TomNisbet/TommyPROM/blob/master/unlock-ben-eater-hardware/unlock-ben-eater-hardware.ino) His code is for the 256k rather than the 64k version and I changed the sequence of writes as required by the datasheet for the 64k version as follows:
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TommyPROM Help
Oh ok. I did upload the sketch from the arduino ide, but I was following the documentation at https://tomnisbet.github.io/TommyPROM/.
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New eeprom, different problem... All 'ff's...
Which chip are you using? If it is the 28C256 and you built the Ben Eater programmer, try this sketch: https://github.com/TomNisbet/TommyPROM/tree/master/unlock-ben-eater-hardware
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Problem with Arduino based EEPROM programmer
Also, although not necessarily the root cause based on the symptoms you are describing, the AT28C256 comes with a software data protection feature which, if it was somehow enabled prior to shipping, needs to be disabled. Ben's EEPROM code does not unlock these chips. If your testing reveals that the EEPROM was in fact not written to, then one option would be to implement u/nib85's TommyPROM arduino programmer, which supports unlocking. It uses a few different chips, but you can make it work with Ben's hardware. There is a section somewhere in the hardware notes that speaks to that.
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Continuous eeprom problems
Here is one of th3m that works with your setup: https://github.com/TomNisbet/TommyPROM I will search for the other one and send. Also, read the README of the github repository
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After writing my EEPROM I only read ff | ATMEL AT28C16 15PU 1701
When I encountered the problem I tried to find the solution and found references to TommyRom. After trying I had the same behaviour then before. From the Datasheet I couldn't find mutch about extra steps to writing the Chip. I haven't build the first thing where Ben programmed the Chip manually, but I will recreate it next.
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Buying the components in Europe
Really not sure about that programmer... according to what I could read here it mostly supports micro-controllers and serial EEPROM chips. If you only run on Windows, then the XGecu T48 would be a safer bet, IMO. One of XGecu's official distributors has a store on AliExpress under the name of 'XGecu Official Store'. Most reliable source if you are willing to wait a bit. If you run Mac OS or Linux, then the older TL-866II-Plus model is best for compatibility as the minipro open source software works with it on these platforms. Still available out there, but good chance it will be a clone. A third option is a breadboard/arduino version like the TommyPROM from u/nib85.
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Programming EEPROM
I just added support for these chips to my programmer. Take a look at this project if you want to see some working code: https://github.com/TomNisbet/TommyPROM
eeprom-programmer
- EEPROM arduino issue
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Help with Breadboard CPU EEPROMS?
not entirely sure what you're asking, but does this help? https://github.com/beneater/eeprom-programmer
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EEPROMs not working
Hello, I have attached the outputs from running this script https://github.com/beneater/eeprom-programmer/tree/master/multiplexed-display
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8 Bit computer 7 segment display code
it is in the video description, this is the same link you are going to find there: https://github.com/beneater/eeprom-programmer/blob/master/multiplexed-display/multiplexed-display.ino
- 8 bit computer multiplexing 7 segment display arduino upload errors
- last try mmjoy pro micro and 74hc165n
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EEPROM Programmer writeEEPROM is writing the last byte of data to all addresses
I'm having some difficulty with the EEPROM Programmer. As the title describes, the writeEEPROM function is writing the last byte of data to all of the addresses. I am using Ben's code from here, so I think it's pretty safe to say it's a hardware problem.
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My custom single board computer, 65c02-based with multitasking support
One reason to use EEPROMS was that you don't need a special programmer to write them. I managed to get away with an Arduino thanks to this project - much cheaper since I didn't already have a programmer.
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How do you program eeprom?
programming a 28c256 is really easy, have a look at the datasheet. On github you can find a lot of DIY solutions, for example https://github.com/beneater/eeprom-programmer
- Does Ben have a download/physical sheet of all the opcode instructions somewhere Im not seeing?
What are some alternatives?
Xbox-EEPROM-Utility - Original Xbox EEPROM Dumper based on an ESP32 and ESP8266.
flashrom - Send patches to https://review.coreboot.org: https://www.flashrom.org/Development_Guidelines#GitHub
eeprom-programmer - An Arduino Nano sketch and schematic for an Atmel 28cx programmer.
arduino-eeprom-hexdump
TommyPROM-PCB - PCB design files for the TommyPROM project (https://github.com/TomNisbet/TommyPROM)
cc65 - cc65 - a freeware C compiler for 6502 based systems
ArduinoJson - 📟 JSON library for Arduino and embedded C++. Simple and efficient.
qodem - Qodem Terminal Emulator
nanoprom - EEPROM Programmer for Arduino Nano without needing other components
BenPrommer-SDP - Enhanced Ben Eater Breadboard EEPROM Programmer with SDP Features
WiFiManager - ESP8266 WiFi Connection manager with web captive portal