From: B. Degnan (billdeg_at_degnanco.com)
Date: 2006-10-08 03:38:53
Andre, Yes the first picture is of my 9090 drive... Thank you for passing along this information. I will check my drives too, to see if I have a match. I also am very curious about the add-on card. In some of the pictures you'll notice that the monitor board had popped out of it/s riser clips. I have since then re-attached it. The pics are from the initial inspection. I have three pages of notes to be posted soon. Here is a summary. The system powers up, but there is no picture. The drive returns the same IEEE drive OK flash pattern, but SHIFT+RUN/STOP does not initiate a search for a program to run. The only thing I have done so far is unplug the keyboard and attach to a nearby CBM 256 Hi-profile B series to verify that the keyboard is sending a signal to the computer. The keys pressed do not match what appears on the computer. So at least in this case the CBM 256 hi-profile does not have the same external keyboard layout as this 8296. For example press j and get 7, @ = 9, shift = w, repeat=e, 4 on keypad = a... the disk drive controller is P/N 251203 rev B 1983 It could take a while to restore this system, but I believe I have enough parts around to try. vintagecomputer.net/commodore/ Bill D At 10:09 PM 10/7/2006 +0200, you wrote: >Hi Bill, > >just some notes: > >- the 25pin d-sub connector indicates that this really is a 8296 > PET board >- As far as I can see the 8296 board is a from an 8296, not a > 8296-D, as the latter had a switched power supply and none of > the big capacitors and/for the on-board regulators of the 8296 > like this board here. >- I find it interesting that the disk drive uses two 6502 instead > of a 6502 and a 6504, but I have to check with the schematics > of the other disk drives. >- The first image seems to be of a 9060/9090 harddisk, not of the > PET? > >Andre Message was sent through the cbm-hackers mailing list
Archive generated by hypermail pre-2.1.8.