EGA for AT&T PC6300

[Wilkin]

> 	In order to convert your machine to EGA compatibility, you
> will need to:

>   i)    Make sure your ROM BIOS is at level 1.43 or later.

	This includes 2 EPROMS and one PAL chip

>   ii)   Order two replacement chips on your video board; one of them

Not exactly true, You need 1 Video Disabler if you have a P4 video card,
a new PAL (Part of a non-AT&T Kit) for the P3 or P2 video card, and
NO PARTS if you have a P8 video card.

>   iii)	Find someone who makes an EGA card which can go in a 6300.  As

PARADISE, TAXAN, SOME OTHERS (STB)......
It is using the AT&T monitor that is tough, a Mult sync works fine.

The best choice is the TAXAN 557 GOLD Card If you have an AT&T 318 monitor.

The cable is easy to make.

> 	A few gotchya's:  You need to know your video card version
> before you call AT&T to order your ROM BIOS (if needed) and the
> two replacement bugs.  To find out your video board version, pop the

Not True Just order the 1.43 ROM BIOS Kit...

You only need the video card info to order the disabling kit.

Here's a source for a KIT to correct a software bug built into the 6300
(16 bit i/o inverted), it works but need a better connector for the 16bit
slots.
gpw

William J. Allen, 10120 Lockwood Drive, Cupertino, CA 95014, (408)
257-9739, has developed a hardware fix for the hi-byte low-byte order
problem with the AT&T 6300's bus converter board.  This board, which he
sells for $45 mounts in one of the 16 bit connector slots (uses a signal
from this slot) and connects to th PROM chip socket on the bus converter
board by a ribbon cable.  The front half of the 16 bit slot remains
available for a half card.  He reports it permits installation of a EGA
card (he is using a VEGA Deluxe) and all programs he has tried so far
work fine.  This includes WINDOWS 1.x and 2.0, PC PaintBrush, Generic
CADD in EGA mode,  123 (including 132/43 mode), QUATTRO and AUTOCAD. 
His $45 kit includes the board for the fix and the needed disabler chip
for the AT&T VDC.  

HIS KIT USES A PAL TYPE DISABLERC, THIS WILL WORK ON OLDER 6300s.
NOTE:
If you have a memory card to bring your 6300 up to 640K you may experience
problems getting some EGA cards to work. You will also need a newer DOS version
(AT&T 3.2 v2.02 or newer) to get ANY EGA basic or special(ANSI) functions to
work.

DO THIS AT YOU OWN RISK
gpw
-- 
George Wilkin 	AT&T Network Systems,(IH MAIN BL)
                2000 N. Naperville Rd. Rm IH4A157
                Naperville, IL. 60566-7033
 att!ihlpf!gpw  work ph# (312) 979-4317