Does anyone have a pinout the VGA feature connector?
I'm trying to resurrect an AGP Cirrus Logic CL-GD5465 based card that had it's feature connector header cannibalized for header pins some decades ago... I'm probing to see if any of the pins are shorted to anywhere. I found unexpected grounds on pins Z8,9,10 and 11, so it would be nice if I had a pinout to check.
This looks accurate: https://www.epanorama.net/documents/pc/vga_feature.html . It is for the 2x13 pins connector. The older edge connector and newer pin header connector models have the same pinout. There are a lot of ground pins in that connector.
The VAFC feature connector has well more than 26 pins, so if you have more than that, the above pinout will not be the right one.
^ Thanks!
Hmm, the grounds I found seem correct according to that pinout. Not seeing any obvious problems. Need to test the card some more.
Do you test feature connector with any connected card?
Need help? Begin with photo and model of your hardware 😉
I have repaired the card by reworking the pins on the video chip.
What gave me a hint is a "tweezer trick" that helps you find loose pins. Basically you're supposed to run something across the pins and listen. Except I actually applied too much force and bent the pins sideways a little. Fixing some 40 tiny pins out of 200 wasn't fun but I got it done. Loose pins with bad solder joints were on the AGP interface side. The card works fine now, playing me some Doom. I think it's slower than some of the PCI cards I have (tested in Doom timedemo), but it's nice to take advantage of the bus on the board nevertheless.
Babasha wrote on 2022-11-12, 06:16:Do you test feature connector with any connected card?
Don't have anything for that connector. I was just testing for a short, since someone cannibalized the pins from the header many moons ago.
The card is fixed now.
