Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!bionet!sdsu!srcsip!falcon!rogers
From: rogers@falcon.SRC.Honeywell.COM (Brynn Rogers)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Summary of Fastwrite VGA Boards and the Seiko Monitor
Message-ID: <25114@srcsip.UUCP>
Date: 7 Jul 89 16:30:13 GMT
References: <2568@PEDEV.Columbia.NCR.COM>
Sender: news@src.honeywell.COM
Reply-To: rogers@falcon.UUCP (Brynn Rogers)
Organization: Honeywell Systems & Research Center, Camden, MN
Lines: 23

In article <2568@PEDEV.Columbia.NCR.COM> rogerson@PEDEV.Columbia.NCR.COM (Dale Rogerson) writes:
>Here is a summary of the mail I recieved asking for information on the

>III. Other VGA Boards
>     The most popular cards were the Orchid prodesigner and the STB VGA/Extra
>     board.  These boards are both based on the Tseng Lab chip set.  They
>     do experience some lost dots in high res color modes.  Someone also
>     recommended the Logix(?) card that is advertised int computer shopper for
>     $269(256k).

Just to make a slight correction, I am pretty sure the lost bits are caused
by clones that have stretched the timing on the IO bus. If you put one of those
cards in a true blue 8Mhz AT, I bet they work perfect.(close enough, anyway)

I Found that the proto board I had installed in my AT (10Mhz DTK clone with
10Mhz IO bus) was causeing much of my problem. (dropping bits)
  It didn't cure it totally, but the driver that loads the VGA BIOS into
RAM does cure it totally.  However, the proto board goes back in tonight, 
because It is much more important than a few bits.


 Brynn Rogers    Honeywell S&RC        rogers@src.honeywell.com
                                       nic.MR.net!srcsip!rogers