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View Full Version : Who know IBM EGA Graphic card



yjfy
August 13th, 2012, 11:53 AM
Reworking or engineering sample ?
http://www.yjfy.com/images/oldhard/video/AEGAC-1_2.jpg
http://www.yjfy.com/images/oldhard/video/AEGAC-1_1.jpg
http://www.yjfy.com/images/oldhard/video/AEGAC-1_3.jpg
http://www.yjfy.com/images/oldhard/video/AEGAC-1.jpg

yjfy
September 3rd, 2012, 03:04 AM
Found a IBM Serial/Parallel Card in WEB.
10150
10151

yjfy
September 3rd, 2012, 03:07 AM
Evaluation sample?

yjfy
September 3rd, 2012, 08:38 PM
"SwRI" in it.

Southwest Research Institute is a nonprofit, independent, applied engineering and physical sciences research and development organization with 11 technical divisions.

How telecommunications systems testing at Southwest Research Institute benefits many IBM customers.


Found a IBM Serial/Parallel Card in WEB.
10150
10151

vwestlife
September 3rd, 2012, 08:49 PM
It probably took quite a lot of trial and error to get all 64 colors to display properly, especially those darkest 16 colors which often did not display correctly on EGA cards & monitors.

pcjunky
September 5th, 2012, 12:37 PM
Found a IBM Serial/Parallel Card in WEB.
10150
10151

I have seen many of these however I have never seen one with the strange daughter board yours has.

g4ugm
September 5th, 2012, 01:40 PM
I think its an EGA card that has been hacked to work on an RGB analogue monitor. I can tell you its not a pre-production prototype unless both chips on the daughter board have been changed and looking at the soldering on it I think that is unlikely. The give away is the date codes on the chips. All the chips on the main board are coded 84nn where nn is typically circa 35 so thats week 35 of 1984. This ties up with the release of the EGA car which was according to

http://en.wikipedia.org/wiki/Enhanced_Graphics_Adapter

was September 1984 so the chances are its an early card. However if you look at the daughter card the date codes on those chips are 8537 and 8546 so towards the last quarter 1985 which is well after the initial announcement. So its either some kind of field change to fix a bug, or some kind of mod so it can be used with a cheaper monitor.
.

yjfy
September 6th, 2012, 11:46 AM
It is authenticated by SwRI or other certification body ?