uIEC

The unit has some "future" proofing built into it, since it can upgrade itself. When new functionality is developed, the owner simply copies the new firmware to a CF (or SD) card and reboots the device. The device bootloader will scan for the new code, and program itself with the new code if found. All versions have the feature. And, I spent a few extra bucks and used a 128kB AVR on the unit. Since the code is now 51K, I have plenty of room for new functionality (D81 images, "mounting" images under partition numbers, etc.). Well, the SD version is soldered up, and I can talk to the CPU. It looks like it recognizes the SD card, so I just need to test the IEC routines and tweak a few things. I did realize I forgot to order 2.2uF 0805 caps for the unit, so I'll have to think of something for the 20 board I have on hand. The size is not so critical, I do not think, as it's just a smoothing cap for the LDO 3V3 regulator. Maybe, I can cheat and use 10uFs for the 20 units and get away with it... Jim -- Jim Brain, Brain Innovations (X) brain at jbrain.com Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times! Home: http://www.jbrain.com