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North Star HSIO-4
To connect the interrupt sources to the S-100
interrupt lines:
1.
Take a 14-pin header and wire the
interrupt source for the desired port(s) to
the pin carrying the required interrupt line.
2.
Install this header in the Interrupt
Header Socket (Location 2F).
For example, to cause all sources of interrupt
from Port A to generate Vectored Interrupt 2
(VI2), you would wire pin 1 to pin 12 on a 14-
pin header, as shown below:
As supplied, the interrupts for each
HSIO-4 port are all wired to S-100
bus interrupt line VI2, as shown in
Figure 3-27.
55
Figure 3-26
O
O
C D
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Figure 3-27
User/Technical Manual
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