Firmware flasher for the AppleIISd
The last year has been surreal. With 80 shows of 'The Hunchback of Notre Dame' 🎵 and four other projects I very well may say that I have never sung so much in my life. Now that the run of the musical is over, I have had a little more time to return to retro computing. A little while ago a guy from the Applefritter forum contacted me and asked if I were interested in making another batch of the AppleIISD. I said yes but I wanted to make some changes, first. One thing I thought of right from the start was the ability to update the card's firmware within the computer and without having to remove the EPROM, erase it and burn it. At first, I thought of using a battery-backed SRAM chip, but that did not work for some reason and the two I had had dead batteries despite having been sold as 'new'. However, for development, I was using an EEPROM anyway, so I decided on using one instead. I don't know why I did not have the idea before. Maybe, I was under the impres...