Documentation here (kopie from forum64). Had it for quit some time in the collection, not quit sure what is was until I stumbled on the C-648 on forum64. Seems that you can have up to 5 complete C64 systems with this board, including a ram floppy.
Some time ago i got my hands on set of midi hardware for 35 euro, including a Sound Sampler, as sold by Kat & Korsh overhere (with Dutch manual), a Siel Midi Computer Interface and the Tron Digidrum. Lucky find, included are some self build Midi interfaces as well from 1991 and some PCB’s, copied manuals & disks.
The boxed Datel Sound Sampler i got from Facebook with some other stuff, posted earlier.
The top cartridge..haven’t got a clue where it came from. Tested, but standard C64 startup screen. Will figure it out later.
Two eprommers I got from Bram Brooddoos. The Dela 3 and one probably from a 64’er design. Not quit sure if Frank Hofmann did the design or build this one. Need to find the software for it.
Some books and manuals, bought a german manual for the final chesscard and a few weeks later found a dutch manual. The software protection manual is a nice addition, last 7 years came across just one…this one.
Shareware plus : Datel Midi Interface and the Mini x-pander
And some ESD protectors to solder to the joystick connector. And three Shuriken modulators for the C64. Might use these in the new 250407 boards. Need to adjust them for working als Pal instead of NTSC.
Had it operational within no time. Protovision sells these at the moment. Bought mine on Kleinanzeichen. Configured a ftp server on a NAS, updated the software and wifi and ftp acces was running in no time. Took some googling to find out how to deal with whitespaces in your Wifi SSID. I use this for testing hardware speedloaders etc. More info on forum64.de