Daniel Rock wrote:
> "Dave (from the UK)" <see-my-signature@southminster-branch-line.org.uk> wrote:
>
>>Anyone has a data sheet for the LSI 53C876 chip? I looked on the LSI web
>> site, but can't find it. But I suspect it can be found. I see a
>>reference to someone in a Sun forum looking at the data sheet. My guess
>>is the data sheet will show what external chips are needed to drive SE
>>and HVD.
>
>
> What about
> http://www.lsilogic.com/files/docs/t...ollers/876.pdf
> (from)
> http://www.lsilogic.com/products/scs...si53c876e.html
>

Thanks. Obviously I have not read it carefully, but it says it has a
single ended (SE) interface. Searching with acroread for the word HVD in
that data sheet, I find it does not exist.

I am now wondering if the chip needs extra chips to drive HVD that it
does not need to drive SE? In other words, you need a SE -> HVD chip
somewhere. That might make conversion quite difficult, as quite a few
changes would probably be needed to the board. But if possible, one
would probably start with an HVD board and remove the driver on one
channel only.

I don't suppose anyone is aware of a SCSI board being made like this -
i.e. both HVD and SE on the same board? If someone else makes one, but
it uses that chip, there is no real reason it would not work in a Sun.
I'm not bothered about whether it will boot or not.

--
Dave K

http://www.southminster-branch-line.org.uk/

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