I plan to use a PIC18F6520 in the T64 (0.5mm TQFP) package. It has all
sorts of internal features: dual UARTs, 4 timer/counters, I2C, SPI,
multiple A/D..you name it. It has 32K program flashrom, 1K user data
flash, and 2K of SRAM. Plus, I'm used to the part so using it in a patch
manager board like this will be relatively simple. If I somehow manage to
run out of program space, I can go to the 6620 (2x all memories) or the
6720 (4x all memories).
It would be a surface-mount revision of the board, with a lot of the old
hardware going away in favor of PIC-based circuits and code replacements.
The only things that really need to stay are the analog circuits.
As far as the code for the KLM-367's 8048, I extracted the code about
ten years ago and have it online as a 1K binary file. Ricard Wolf did a
complete disassembly on paper for it around the same time; I have a paper
copy of his notes but they're not really mine to hand out--please ask him
for a copy. (He also disassembled the KLM_366's key assigner 8049).
FWIW: the key assigner 8049 is also used in the Mono/Poly. In fact, the
voice stack/share mode of the Mono/Poly will work in 4 voices on the
Polysix, provided you hardwire a button in to shunt the proper switch
scanning pins.
Also, the 8048 used in the KLM-367 is also used on the KLM-380 for the
Trident MkII--it is the exact same program.
Crow
/∗∗/
On Wed, 27 Aug 2003, Stefan Rinass wrote:
> Hi,
>
> For additional functions would be much easier IMO to build a new Board
> from scratch with a new MCU and a own program (presupposed someone knows
> exactly which pin on which connector has which function)....
>
> Otherwise, has anyone ever read out the 8048 and had a look into the
> code? I can program in Assembler; proably i can analyze the Code of the
> 8048 and make it compatible to the 8535 with a few re-programming....i
> have two 8048´s from two 367´s here, but i can´t read them out, cause i
> have no Device to do so.....