VOGONS


First post, by Intel486dx33

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Need motherboard manual for Acorp 5VX2

Reply 1 of 4, by Horun

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Searched and searched but cannot find anything. Odd that there are dozens of other Acorn board docs...

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Reply 2 of 4, by imi

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I have an old acorp board too and haven't found anything about it apart from a few scanned pages from the manual in the internet archive luckily... there seems to be little surviving documentation about these boards.

it does seem to be the same as this one though:
https://arvutimuuseum.ee/th99/m/I-L/34077.htm

Reply 3 of 4, by analog_programmer

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I'm sorry for necroposting, but I found that Acorp 5VX2 motherboard is identical to Jetway J-656VXC(MMX).

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Reply 4 of 4, by RayeR

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BTW I just repaired one Jetway J-656VXC MB with damaged 32b bus buffer and some scratch on PCB.
My MB is el'chapo variant with only a single VRM populated but the PCB is the same so I was able to reverse-engineer the schematics of VRM based on LP2951 regulator and soldered a few missing components, removed 3 wire jumpers connecting Vcore and VIO and replaced single heatsink by two isolated heatsinks - this is important because single heatsink makes another Vcore-VIO bridge via 2 mounting holes and its body. So now I have upgraded dual VRM version, going to test...

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