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DV1520.TXT
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#: 57197 Sub-topic 2 - High Level Utility
Sb: #57171-1520 PLOTTER
16-Jan-85 17:11:58
Fm: Chrisdos 76703,717
To: JOHN BUNN 75375,261
Funny you should ask that question. YES the 1520 can be modified to device #4.
(I know, I did it.)
Not only can it be set for 4, it can be set for 5 as well, and I assume it
could be set for 7, thow I never tried.
(Why thay had to set to 6 is beyond me !)
It requires a tiny bit of hardware modification, just like the (YUCK) disk
drive. Basicly, it is the same thing, you have to mess with a trace on the PC
board. only this one you have to reconnect.
You must remove the PC board from the 1520 because its on the bottom. (it is
not really that hard, a few screws, just be carfull.)
You will notice the microprocessor chip on the board, it it the BIG one.
Carfully look at the traces going to the chip on the bottom of the board,
(alas, i do not remember the pin mumners)
But you will notice at least 3 pins to the chip next to each other that are
connected together to one trace. However the middle pins trace will have been
scratched through. (Ungrounding that pin)
This makes device 6. If you reco