Adding a VGA to a 6300

[Juan Castillo]

In article <7514 at pyr.gatech.EDU> byron at pyr.gatech.edu.UUCP (Byron A Jeff) writes:
>Could someone send me the copy of the instructions for installing a VGA
>card into a 6300? This is the info I've picked up so far.
>
>1. Get 1.43 BIOS from ATT. Install it.
>2. Replace a 7400 in the 6300 with a jumper dip. Where on the board is
>   that 7400 and what is the schematic for the dip header?
>3. Disable the internal video. Does step 2 above acoomplish this?
>4. Install the VGA card.
>
>Is there anything else I'm missing?
>Has anyone had major problems getting their cards installed?
>
>All responses will be greatly appriciated. Please mail any responses.
>
>BAJ
>-- 
>Another random extraction from the mental bit stream of...
>Byron A. Jeff
>Georgia Tech, Atlanta GA 30332
>Internet:	byron at pyr.gatech.edu  uucp:	...!gatech!pyr!byron



What you must do to upgrade your AT&T6300 to VGA, EGA or Hercules.

	1. Have ROM BIOS 1.43 installed (AT&T part #105203780)
	2. Disable the resident video board (see notes)
	3. Install video board that is compatible with monitor being used
	4. Change motherboard dip switches (Dip Switch Block #1 at 7w, switches
	   5 & 6 must be on. More info in AT&T 1.43ROM BIOS booklet)
	5. Install the 6300BUSS CORRECTION KIT (W. ALLEN ASSOCIATES part 
	   #ABC02)

 {AT&T Parts - (800) 222-7278}
 {W.ALLEN    - (408) 257-9739}


Notes on disabling the resident video board: Open the top of the machine and   
look for a yellow tag on the resident video board. In top center line of the
tag is a GO#. The various GO versions and how they are disabled include:

	1. GO317 - This is a P2a board. The board must be removed and replaced
	   by an AT&T Bridge Adapter Board (AT&T part #405067281)
	2. GO318 - This is either a P2 or P4 board. You can disable these with
	   the AT&T disabler chip (part #405098625) or the W ALLEN chip that is
	   included with the ABC01 BUSS CORRECTION KIT (the ABC02 doesn't have 
	   this chip). The disabler chip will replace a socketed IC labeled 
	   PL68. This chip is located at location 5H (P4 video board) or 5G
	   (P2 video board).
	3. GO380 - This is the P8 board which has jumpers labeled W1, W2, W3 
	   and a double jumper "A". Disabling of this may be done by moving the
	   jumper W1 from 2&3 to 1&2.



VIDEO BOARDS WHICH HAVE BEEN SUCCESFULLY RUN ON AT&T 6300 PC WITH A COMPATIBLE
COLOR MONITOR.

	I. EGA cards by the following manufacturers:
		AT&T VDC750 (using AT&T 319 monitor)
		STB MULTIRES II (with 9-25 pin cable for use on AT&T 319 
		monitor or plain withother monitor)
		Video 7 EGA
		EVEREX EGA
		TAXAN EGA and GOLD CARD
		PARADISE EGA
		MAX LOGIC EGA
		STB EGA
		GENOA EGA
		Gemini Technology EGA
		ATI WONDER (was reported that some folks had difficulties with
		this, others had none)
	
	Only EGA cards said not to work include :
		RENASSANCE LEGACY
		HP
		NEC
		BOCCA

	II. VGA cards by the following manufacturers:
		EVEREX
		PARADISE
		MAX LOGIC (with ROM BIOS OF 212)
		ATI VIP
		QUADRAM
		GENOA (some had difficulties with this one)
		SIGMA (requires special cable for Multisync monitors, W. ALLEN
		       will provide information)
		VIDEO 7 (requires special software if using with Math
		        co-processor in machine, W. ALLEN has this software)
		ORCHID (not totally GCA backward compatible)
		STB VGA EXTRA EM