riscy
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Re: what parts ?

To: riscy@pyramid.com
Subject: Re: what parts ?
From: tim@ubitrex.mb.ca (Tim Braun)
Date: Fri, 9 Jul 93 17:53:06 CDT
Reply-to: riscy@pyramid.com
Sender: riscy-request@pyramid.com
> From: Andreas Busse <andy@resi.waldorf-gmbh.de>
> 
> * SCSI controller
>       53c90,53cf90

> * Ethernet controller
>       ??                       
Probably DP8390, or DP83902

> * Ethernet glue
>       ??                       
DP8391 for coax.

> * Video Timing/RAMDAC:
>       TI 34076
How much is this?

> * VRAM
>       ??
Sigh, I could live with 1 MBit of display memory for B/W.

> * serial/parallel:
>       16550
Drop this.

> * floppy controller
>       SMC FDC37C651 (has two 16450 and parallel built in)
SMC FDC37c663 - has 16550's, IDE.

> * CPU
>       3081E/40
Is this "20 MHz bus/ 40 MHz internal"?

> * RAM
>       4Mx9, 512Kx36, 2Mx36
8 MBytes on board sounds reasonable.

> * I/O Controller
>       IDT 3730

> * RTClock
>         ??
Dallas Semiconductor DS12887,  Moto 146818 compatible, 
 built-in battery & crystal.  Extended (additional 64 bytes) NVRAM.

> * Keyboard controller
>       ??
8742 with some kind of BIOS.  Of course, we won't be using the "gatea20"
 feature, and the "reset" feature may be debated.

> * GLUE (if there's something you don't where to put, put it here)
>       ??
> 
> * Connectors
>       9pin sub-D, 15pin sub-D VGA, 25pin sub-D, 5pin DIN (Keyboard),
>       BNC, 15pin sub-D (AUI), ISA Conn., Power Supply Conn.,
34-pin FDC header, 10-pin 2nd serial header, 50-pin IDE header.

> I'm sure I have forgotten something :-)
That's always my problem.  Like the fact that I should be home by now.

> Andy
________________________________________________________________
Tim Braun                          |
Ubitrex Corporation                | Voice: 204-942-2992 ext 228
1900-155 Carlton St                | FAX:   204-942-3001
Winnipeg, Manitoba, Canada R3C 3H8 | Email: tim@ubitrex.mb.ca

 

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