PDP-11 DRV11-B question

From: Tom Leffingwell <tom_at_sba.miami.edu>
Date: Mon Jan 7 19:44:47 2002

Hmmm...I have an LPV11 I borrowed from someone, I'll try setting its
address to the ADV11's default and see what happens.



On Tue, 8 Jan 2002, Pete Turnbull wrote:

> That's almost certainly what's wrong. The software probably checks for the
> presence of a device at the address(es) it expects for the ADV11; that's
> very easy to do (just set up a trap handler in case it causes a bus
> timeout, then try to read from the address. If it doesn't cause a trap,
> the device is there.)
> The standard adresses for an ADV11 are 170400 for the CSR and 170402 for
> the Data Buffer Register. The standard addresses for a DRV11 are 167770
> for CSR, and 167772 and 167774 for the OUTBUF and INBUF registers.
> If you haven't got an ADV11, I can think of three options open to you:
> 1) get an ADV11
> 2) get a 3rd party equivalent, such as an ADAC card
> 3) use some other device, set it to the ADV11 addresses, and hope you
> fool the software
> --
> Pete Peter Turnbull
> Network Manager
> University of York
Received on Mon Jan 07 2002 - 19:44:47 GMT

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