Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!ogicse!emory!jdyx!tpf
From: tpf@jdyx.UUCP (Tom Friedel)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: VGA spec for PVGA1A chip set ...
Message-ID: <1990Dec12.231943.709@jdyx.UUCP>
Date: 12 Dec 90 23:19:43 GMT
References: <1990Dec11.202125.14845@tandem.com>
Organization: JDyx Enterprises (Atlanta GA)
Lines: 23

>Where does this chip set come from?  How do I get specs for it?  Please send
>replies to me (ernest@tandem.com) and I will post a summary if enough people are interested.

This is the Western Digital (Paradise) chip that is in the Paradise Plus
and Professional cards.  You can get the 'Programmer's Reference' from
Western Digital (800 number)
The main disadvantage of this chip is that the Paradise BIOS does not
support 800x600x256 (I don't know if this is a chip limitiation)

This is NOT the chip that is in the Paradise 1024 card, which is the 
WD90C00.  

I would like to know what is differnt about the 90C00 chip.  It has the
same resolutions, and when dumping all of the registers in variouus video
modes (including extended reg's 0xB-E) they are all exactly the same as
the PVGA1A.  But as I can't seem to set SVGA modes as I can on the PVGA1A
I suspect the 90C00 chip has an extra exteneded register somewhere.

tom

Tom Friedel  JDyx Enterprises (404) 320-7624 tpf@jdyx.UUCP 
Unix BBS:  (404) 325-1719 <= 2400 ; (404) 321-5020 >= 2400
"Live simply, so that others may simply live."