[comp.sys.att] HW3B1 HW

aglew@ccvaxa.UUCP (12/03/87)

I'd like to play with my 3B1's hardware a bit, and have several questions:

(1) What are the best manuals to get? I was recommended the Technical
    Reference, but but have not yett obtained it in two months' waiting.

(2) Has anybody interfaced SCSI to the UNIX PC?

(3) Has anybody interfaced a larger monitor?

(4) Does anyone know how hard it would be to break past the 4M limit
    on a process' virtual address space? Ie. use more address lines 
    at the MMU?

That's enough for now.


Andy "Krazy" Glew. Gould CSD-Urbana.    1101 E. University, Urbana, IL 61801   
aglew@mycroft.gould.com    ihnp4!uiucdcs!ccvaxa!aglew    aglew@gswd-vms.arpa
   
My opinions are my own, and are not the opinions of my employer, or any
other organisation. I indicate my company only so that the reader may
account for any possible bias I may have towards our products.

gberg@hpcupt1.UUCP (12/04/87)

Is it possible to add one or more external hard discs to the 3b1/7300 ?

Rather than pay $ 1,000+ for an AT&T memory expansion board, can blank
boards be bought (and stuffed with cheap DRAMs) ?

Has anyone replaced the 256K memory chips with 1Mbit chips on the
motherboard ? Would it do any good to use memory faster than 150ns ?

rjd@occrsh.ATT.COM (12/21/87)

>The SCSI interface was released is for the 3B2 family of computers.  It
>will allow the new 3B2/500/600 and larger animals to interface all
>kinds of hardware periphrials.  Like 120MB tape drives, large hard
>drives, removables, etc...
>						-Lenny

  Not completely correct.  On March 27, 1987, AT&T announced the production
of the SCSI (Small Computer Systems Interface) host adapter card for the
3B2 *family* of computers.  This card will allow *ANY* 3B2 computer (i.e.
3B2 models 300, 310, 400, 500, 600) access to SCSI-based peripherals.  The
only limitation is the software load of the 3B2.  The earliest release that
supports it is either 2.0.5 or 3.0, and all subsequent releases.

   I think the original poster is more concerned with the 3B1, which is no
relation to the 3B2.

Randy