Reply 40 of 80, by rick12373
Based on the white mark in the top right of your picture (which should be pin 1), the "20" on the lower left and trying to match […]
Based on the white mark in the top right of your picture (which should be pin 1), the "20" on the lower left and trying to match the diagram with the text on the board, this would be the pinout for the front panel on the picture you posted:
10 09 08 07 06 05 04 03 02 01
20 19 18 17 16 15 14 13 12 11
BTW, this will also be very useful for me since I just got a VI15G and will get to pick it up in a few days! 😁
Thanks for your expertise. These old boards are a lot more challenging that boards from the last 20 years or so. I used to have someone else build my computers prior to the Pentium days. So I started in the ATX era really. Here is where that information came from http://motherboards.mbarron.net/models/486vlb3/vi15g.html .
I hope all of this works when I turn it on for the first time. There are so many things that could go wrong! I have managed to adapt an ATX case and PSU. It looks like crap and would be much nicer in an AT case, but if it works I will be happy.
486 DX4-100 (overdrive)
16MB 72-pin SIMM RAM (2x8MB)
1MB Diamond Speedstar Pro VLB video card
SB 16 Value CT2770
AOpen VI15G Socket 3 Motherboard
HDD/FDD VLB controller card