Re: What type of bus for 3/470??

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#3278

From: Craig Dewick
Date: Sat, 14 Dec 1996 00:00

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In <58qfqv$nbd@news1.halcyon.com> larryf@halcyon.com (larryf) writes:

>I have a 3/470 and want to upgrade the frame buffer from b&w -> cg6. I
>have heard that I need a P4 type board, however according to the Sun
>Hardware Ref Faq, it says that my bus is VME

>  3/470
>        Processor(s):   68030 @ 33 MHz, 68882, 68030 on-chip MMU,
>                        7 MIPS, 0.6 MFLOPS
>        CPU:            501-1299/1550
>        Chassis type:   deskside
>        Bus:            VME
>        Memory:         128M physical with ECC, 4G/process virtual,
>                        64K cache, 80ns cycle
>        Notes:          Rare. Code-named "Pegasus". 8M standard, uses
>                        same memory boards as 3/2xx.

>Which do I need? A VME card or a P4 card?

The 3/4xx CPU board has a P4-bus connector on-board for framebuffers to plug
into. It's very much electrically seperate from the VME bus hardware, which
controls the activity on the VME backplane. If you pull out your 3/4xx CPU
board you'll see the female 96-pin DIN-41612 connector with two threaded
studs pointing up out of the board about half way back from the panel side.
This is the P4-bus connector.

I have a 3/4xx board here which I was using for a time, and I had a 501-1532
P4-bus cg6 framebuffer installed. It worked flawlessly.

Regards,

Craig.
-- 
            Craig Dewick. Send email to 'cdewick@lios.apana.org.au'
   Point a web browser at 'http://lios.apana.org.au/~cdewick/sun_ark.html' to
       access my collection of Sun information and links to other places.

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From: cdewick@lios.apana.org.au (Craig Dewick)
Subject: Re: What type of bus for 3/470??
Date: 1996/12/14
Message-ID: <58tkfq$33v@lios.apana.org.au>
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