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side of the board.
proper position to prevent shorting.
15.
Insert the two 8255's at this time into their proper sockets (one for
PI06-3) at locations A1 and A8.
16.
Insert the 16 pin headers at this time at locations B7 and C6.
17.
On the solder side of the board, cut the trace going to pin 13 of
IC-C7 (74LS30).
(74LS30) and pin 11 of B7 (address jumper select).
most easily on the back of the board (solder side).
9
-
NOTE: Step 18 is only necessary if direct interrupt to the PINT bus is
used.
It is not necessary if either no interrupts from this board are
used or vectored interrupts are used.
18.
Cut the trace coming from p i n 28 of Jl on the component side of the
board.
Solder an insulated jumper between the top of pin 73 of Jl
and the p ad with the large diameter hole immediately above pin 28
of Jl.
This is the pad that was cut free from pin 28.
not to allow solder to flow down the edge connector at pin 73.
jumper is on the solder side of the board.
26
3
Solder the 7805 leads.
Solder an insulated jumper between pin 11 of IC-C7
PI06-6 Rev. 1
Assembly Instructions
NOTE: Be sure to place in
This may be done
Be careful
This
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