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AST RESEARCH TECHNICAL BULLETIN TB-0012 5-16-84
MEGAPLUS II IRQ SILKSCREEN CONFLICT
In certain revisions of the MegaPlus II, the silkscreen for the
IRQ block is in error. The correct silkscreen for the IRQ jumper
block should be:
* * * * * * * * *
< JUMPER BLOCK
* * * * * * * * *
CORRECT
2 2 3 3 4 4 5 5 7
S C S C C S C
The incorrect silkscreen is as follows:
* * * * * * * * *
< JUMPER BLOCK
* * * * * * * * *
INCORRECT
2 2 3 3 4 4 5 5 7
S C S S C C S C
Notice that the position labeled 3S and 3 are swapped, and 4 was
changed to 4S.
Listed below are the revision levels that have the incorrect
silkscreen for ASSY 03-01165-01 MegaPlus II board:
REV AO
REV C
REV D
REV E