Intel Above Board 16-Bit

[gerrydoire]

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]

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 )
(shortening from one to the other side of the socket)
/cimonvg

 

[gerrydoire]

Sounds scarry

 

[k2x4b524[]

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)]

It's a 14-pin DIP socket labeled U111 on my AboveBoard 286, but I don't recall what goes into it either.

 

[k2x4b524[]

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)]

So, 1->14, 2->13, 3->12, etc?

 

[k2x4b524[]

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]

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[]

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]

Will the jumper thing work on my board?

 

[k2x4b524[]

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.