Hardware guru needed
stacy at asia.uznet.net
Fri Mar 6 15:34:38 AEST 1998
>What backplane? There are 16, 18 and 22 bit address backplanes and
>using the smaller with the larger memory generally does not work and
>give an address error.
>I prefer to use part/model number like H9273(a backplane) or
How actually distinguish these backplanes?
I can check whether extended address lines are routed to slots, if
it sufficient - ok. If not - are there more differencies?
>What you need is a copy of the dec hand books that list all those details.
>Any of the volumes from the mid to late 80s would help.
No chance to get it in xUSSR!
>Standard floppy? You can use a DEC RX50 or an RX33(teacfd55gfv). If
>using the latter *all* of the jumper must be set up correctly in the
>drive. The RX33 is a 1.2m 5.25" drive with speed select. You cannot
>use a PC 5.25 360k drive or a 3.5" drive(actually it's possible but,
>very non standard and unhelpful to you at this time).
Which logical drive address should be set on floppy?
>Unless the jumpers or switches on the RQDX3 were messed with the defalt
>addresses and config are usually the way they are set and fit for use.
The time I got RQDX3 it's address was set wrong. I've changed it immediately
but there are lots of other switches...
>For the RDxx you can use a ST225(rd31), st251(rd32), QUANTUM D540(rd52),
>micropolus 1325(rd53) or MAXTOR2990(RD54) if they are formatted correctly.
>or any other drive that matches the number of heads and cylinders of those
>listed. Note those are all MFM type drives.
Has anyone formatter?
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