Path: utzoo!mnetor!uunet!husc6!hao!oddjob!gargoyle!ihnp4!homxb!mtuxo!mtune!mtunf!ralph
From: ralph@mtunf.ATT.COM (Ralph Heredia)
Newsgroups: comp.sys.att
Subject: Re: 6300 graphics and EGA cards
Message-ID: <787@mtunf.ATT.COM>
Date: 21 Jan 88 13:33:46 GMT
References: <1037@bakerst.UUCP> <9300048@bradley> <835@ur-tut.UUCP> <2870@homxc.UUCP>
Reply-To: ralph@mtunf.UUCP (Ralph Heredia)
Organization: AT&T ISL Middletown NJ USA
Lines: 61

In article <2870@homxc.UUCP> rps@homxc.UUCP (R.SHARPLES) writes:
>In article <835@ur-tut.UUCP>, aptr@ur-tut.UUCP (The Wumpus) writes:
>> 
>> In article <9300048@bradley> ninja@bradley.UUCP writes:
>> >
>> >> There are two cards that are being offered for the new machines.
>> >> They are the VDC400 and the VDC750.
>> >
>> >Will they run in older 6300's as add ons ?
......
>
>> >Unfortunately, if you've already sunk $500 or more dollars into an
>> >AT&T color monitor, your only alternative is the DEB.
>> 
>> The new card allow the use of the old monitor you have for EGA. The
>> sweep frequency of the monitor is fast enough to handle EGA with no
>> problem because it can already handle DEB.
>
>	I don't think this is true.  I was told you need the 319 monitor

Wrong. You can use the 318 with the VDC750 however the following are
the limitations if you do so.
1. you can only see 16 color out of a palette of 16 in this configuration.
2. Your EGA applications will look shrunk on the display.
(the 319H expands ega apps to 400 line and gives you 16 colors out of
a palette of 64.

>	for EGA with the VDC750.  The 318 monitor is a fixed frequency 
>	(25Khz) 400 line monitor.  You need a lower frequency (21.8Khz) 
>	to display EGA.  The 319 can drop to this lower frequency, 

The VDC750 brings EGA to 25KHz.

>	the 318 can't.  Essentially, the 319 is a multisynch.  While I 

Multisynch is to strong of a word considering the flexible scan rates
that true multisynchs work at.
We like to call it multimode.

>	have not seen this carved in stone anywhere, I have surmised it 
>	from what several people have told me.  (If I'm wrong, I imagine
>	someone in the know will tell me.)

I'm telling you.

>
>
>Russ Sharples
>homxc!rps

My opinions come from experience with these cards.

Ralph Heredia
mtunf!ralph


-- 
Ralph Heredia                EMAIL: ihnp4!mtunf!ralph or attmail!rheredia
AT&T 200 Laurel Ave.  Middletown, NJ 07748    (201) 957-2567
Disclaimer: The above comments are my own and do not represent the
views of the management of AT&T.