On 4/22/13 2:16 PM, MikeS wrote: > Might be worth while to drop Dave a line asking what supporting > firmware/software/documentation he has for both the Z-RAM and the PEDISK; > maybe we could even talk him into lending them in case someone feels up to > cloning one or both of them... Ruud tried to contact him about the Z-RAM a while back but I don't think he responded. I've since found the manual and disks for the Z-RAM and they are on my site. I have not found any of the materials for the PEDISK yet. > I've been interested myself in that PEDISK board and software; I've got one > of the early 8032s with slots for two floppy drives in the case and I > thought it'd be neat to put a couple of functional 3.5" drives in there > (they're logically equivalent to 8" drives): This photo shows the PEDISK installed in an 8032: http://www.classiccmp.org/dunfield/pet/h/pet8032o.jpg In the back, there's a daughterboard plugged into one of the option ROM sockets. This is the "Spacemaker II", also from CGRS Microtech. It is just a ROM switch. It's probably not related unless the PEDISK also has a ROM in UD11/UD12. In the front, you can see the PEDISK daughterboard. The last page of the Spacemaker II manual has a description of it: The PEDISK II Disk Controller Board plugs into one of the BASIC ROM sockets along with the original ROM. It occupies the previously unusable memory space above the I/O to avoid conflicts with other accessories. This small disk controller card then connects to a floppy disk drive via a flat cable. The disk drive can be mounted inside the Pet or in an external housing. PEDISK II features the CRS/PDOS software package that allows sophisticated file handling; indexed, sequential, or index-sequential. Disk commands are RUN, LOAD, SAVE, OPEN, CLOSE, INPUT, and PRINT. Each command is merely preceded by a 1. Commands can be executed directly or from a program. The PEDISK II controller uses standard IBM encoding allowing information to be trans ferred from other computer systems. The controller can operate with 5.25" or 8" drives. Regards, Mike -- Mike Naberezny (mike@naberezny.com) http://6502.org Message was sent through the cbm-hackers mailing listReceived on 2013-04-23 17:00:05
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