Ben wrote:
>I thought all boards used the same chip, but I just checked an integrated
>Elonex 486 board and that's got a ~1.25cm square chip soldered in, marked
>MRBIOS Elonex Keyboard BIOS (C) Intel 1977. If your board is basically an
>AT-type board with bits shuffled around, it'll be a ~4x1.25cm chip located
>behind the expansion slots.
Thanks again Ben -
Basically it's a Dell board! With onboard video, COM ports etc. Low profile design
(single expansion slot with ISA riser card for horizontal mounting of expansion cards)
With the cover off:
Half of the board is clearly visible with the memory slots easily accessible but
only two socketed chips.
One is the BIOS marked Phoenix 84-87 and the other marked Video WDC
(probably video memory).
The other half of the board is partially buried under the combo 5.25 and 3.5 floppy
Drive but if I squint and use a flashlight I can see the CPU and the coprocessor
Socket. I can't be sure there are no other socketed chips until I remove the drives
etc.
But I have little hope, as I can see most of the board.
Other chips are soldered onto the board include:
WDC - WD90C11-A (Video)
(4) VLSI (chipset)
ACC Micro 3201
Those are the major chips I see. There are other smaller components of course.
So far NOTHING marked 'keyboard'.
I don't want to have to pull the board out in order to minutely inspect it but I may be
running out of options.
The struggle continues -
Dave
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