First post, by DBob
Hi folks!
I've bought a 8086 not so long ago. It's small, it's cute, and it's not working the way i like it 🙁
First of all, here's some picture of it (1,2,3,4,5,6).
I've searched a lot for the jumper guide of the manual, without any luck. The shape of the board is like a full length, full height isa card, and all of the extension cards are connected through a 16 bit isa riser card (but the mobo has only pins at the 8 bit part of the bus).
The first and biggest of all problems, that I want to install a SCSI card. So I did. It's an Adaptec 1542CF, with the "less jumper, more software bios" feature. The mobo mostly doesn't react to it, it's rare when I see the Adaptec's bios message at the post process. When the bios of SCSI card can successfully "interrupt" the post procedure, there is always an error about "bios initialization error" and something about shadow ram (I forgot to write down the exact message). Maybe the card wants to copy the value of the bios rom, to the same address in ram, and it's failing because this area is upper to the 640kB.
So...the mobo has only 640kB dip ram installed and there was 4 empty simm ram place, I've installed ~4mb of ram, but the mobo saw only the on-board 640kB. Changed the ram modules..maybe I've installed them incorrectly, or something else. Nothing changed with different rams. Maybe there's something to do with the jumpers on the board, but without any jumper reference I don't really want to. 😒
That's where I'm stuck...any idea? 😀