Upload PDF files as requested

Nope. You need to flash the new firmware. Actually. I have not tried, but see no reason why one would do so. The new FW has some exiting features: Support for the HP98x6 series of computers Disk 0 can select between 16 different image files Disk 1..3 are fixed image file names All filenames configurable in hpdisk.cfg. No need to call them "lifdisk2.bin" etc Disk activity LED Support for a DS 2417 RTC connected to the aux port and provision to read and write that as a file. The new FW is currently in beta, but it works just fine with the original PCB

Only Eagle files? What if I don't have that? What went wrong with good old pdf?

Anders, Will the newer PIC run the old firmwares(builds) without changes ?  

Question: could the circuit diagram also be published as an EAGLE file or similar? Then it would be easier to design a customized circuit board