PDA

View Full Version : Intel Above Board 16-Bit



gerrydoire
July 2nd, 2010, 01:09 PM
I recently bought this board, it can be used in a 286 or 8088/86 type of computer,
unfortunetly, I need to have a pc selection chip installed to make it work on a
non 286 computer, anyone know if this is a common chip or a special chip
made for this type board, thanks :)

According to the docs:

PC Selection Chip
The PC Selection chip is located just above the bus connectors, center between the 8-bit and the 16-bit connectors. Be sure the socket is empty for a 286 or above system. It is only used for a PC/XT type system.

Cimonvg
July 2nd, 2010, 02:02 PM
I recently bought this board, it can be used in a 286 or 8088/86 type of computer,
unfortunetly, I need to have a pc selection chip installed to make it work on a
non 286 computer, anyone know if this is a common chip or a special chip
made for this type board, thanks :)

According to the docs:

PC Selection Chip
The PC Selection chip is located just above the bus connectors, center between the 8-bit and the 16-bit connectors. Be sure the socket is empty for a 286 or above system. It is only used for a PC/XT type system.

hello
hope others can confirm.. but I remember the "ic" to bee a bunch of small jumpers :o)
(shortening from one to the other side of the socket)
/cimonvg

gerrydoire
July 2nd, 2010, 02:14 PM
Sounds scarry :)

k2x4b524[
July 2nd, 2010, 03:39 PM
gerrydoire, is this socket labeled u-95? i have one of those and a jumper-shunt that has all it's bridges intact, i'll let you know

Chuck(G)
July 2nd, 2010, 04:02 PM
It's a 14-pin DIP socket labeled U111 on my AboveBoard 286, but I don't recall what goes into it either.

k2x4b524[
July 2nd, 2010, 04:16 PM
I just tried a jumper-shunt-block in my AB/286 and my XT sees it all. If you have a jumper shunt block of the 14-pin variety, it's worth a short :)

Chuck(G)
July 2nd, 2010, 04:20 PM
So, 1->14, 2->13, 3->12, etc?

k2x4b524[
July 2nd, 2010, 04:51 PM
yes, just like connecting 2 jumper pins to select a setting, it's essentially a whole 14 pin jumper block, the jumpers going from top to bottom, as they were on my card

gerrydoire
July 2nd, 2010, 05:23 PM
It's a 14-pin DIP socket labeled U111 on my AboveBoard 286, but I don't recall what goes into it either.

That's what I have, I have it inside a IBM Model 30 8086, :)

k2x4b524[
July 2nd, 2010, 05:39 PM
my above board is green, and has 8mb of ram on it, i think it's the above board at, cuz it's got the mounts for serial and parallel ports, i've got the same board aswell, WITH the ports. But i would try the jumper shunt block if you have one.

gerrydoire
July 6th, 2010, 02:03 PM
Will the jumper thing work on my board?

k2x4b524[
July 6th, 2010, 03:53 PM
if they kept to a standard, i don't see why not, i don't want to see you fry your above board based on 1 opinion though.