I have just uploaded the official version 1.0 of the MLDL2000 Specification. Those who are interested are free to download the PDF file from www.kuipers.to/hp41.
In the past I have had questions for other formats, but I am trying to keep the spec under revision control, so PDF is what you get.
Progress: The new state machine works, I seem to have just a tiny little bug in the address decoder, which I hope to fix tonight. If this works the next steps are:
- Make USB I/O work, this is actually more software work than hardware, but not extremely complicated.
- Get the PCB routed and make real proto's!
Overall expectations: put the MLDL2000 on your Xmas shopping list ;)
To avoid flames: this is NOT a commercial project, I will sell units at cost. Unless of course HP has the common sense to start producing the HP41 again (or anything else that has I/O ports. I will be first in line to hook up something to it).
Meindert