SoftROM EEPROM tool
The SoftROM is a ROM replacement for Commodore CBM/PET computers as described at http://petsd.net/softrom.php
Please note: current state is alpha and partially a TODO-list.
This tool writes ROM images to the EEPROM non-volatile memory.
The current version is for BASIC 4 and 80 column display. Future versions will support BASIC 2 and 40 columns too.
It shows the directory of a drive with a file selection bar and lets the user select an image to write into the EEPROM with cursor up/down. If the directory exceeds the size of the screen, it scrolls up and down.
A filter is available to show only files with appropiate size and start address that qualify the file as an extension ROM image file.
ENTER starts the write process:
- buffer file into RAM
- EEPROM write protection is disabled
- buffered file content is written in chunks of 64 bytes
- EEPROM write protection is enabled again
- Verify EEPROM against file buffer