You have not heard from me for some time, but I have been working on the MLDL2000. I could not spend as many hours as I would have liked but some progress has been made.
Right now I am debugging the I/O interface, which allows me to program FLASH and SRAM from my PC with ROM images. Due to some issues I had to change (and simplify) the design of the I/O interface, and I hope to release a new version within a week or so. This will be a pretty final specification before I start making the layout for the PCB. After that there is no way back.
The changes in the I/O interface are that the bit-serial interface has gone away, and only a (faster) parallel interface remains. Signal configuration is based on a USB digital I/O module that I am using and that is very likely to be an integral part of the MLDL2000. Both will fit together in a cardreader housing, which is my design goal.
Meindert