ard at p850ug1.demon.co.uk
Fri Nov 24 17:57:21 CST 2006
> Well, Tony, that probably is a good question, but honestly I do not know =
> for sure. My own guess is also that this particular card worked for =
> the crashed harddrive only...
> The card consists out of 2 rather big main processors from what I can =
> tell :
> - SMS OMTI 20516B (84 pins)
> - SMS OMTI 20513 (84 pins)
IIRC, those are a buffer memory contoller, and a hard disk data interface
> And then some other smaller components from:
> - SMS OMTI J20527C
And that's the data separator/VCO
> - ZILOG Z86C9112VSC
A Z8 series microcontroller.
> All other components are pretty much mainstream Mhz-crystals and small =
I am suprised thrre's not some SRAM (at least a 2K*8 chip for the data
buffer) on that boar. Maybe on the other side?
> The board is about the size of half a CD-box and has no power =
> connection, only the 50 pins cable from the motherboard and the 26 pins =
Power could well be carried on some pins of that 50 pin cable. Does the hard
drive have its onw power connector, or does it get power over the 26 wire
> cable to the harddrive...
Fro mthe Omti chips you mention, I am now almost certain that's a raw
itnerface, possibly similar to ST412
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