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