Interrupts
The interrupts are also set by means of jumpers. In total there are 15
interrupts (IRQ) in a PC system. The interrupts IRQ1 - IRQ8, IRQ13 and
IRQ14 are not available with the AT-COM board because they are internally
used.
The Retail Device Interface (RDI) supports the interrupts IRQ11, IRQ12 and
IRQ15. (For more details please see the README file that is part of the
RDI.)
For PC application the interrupts IRQ9 and IRQ10 can also be used.
The interrupts IRQ9, IRQ10, IRQ11, IRQ12, IRQ15 are set by three sets of
Interrupt Jumpers:
I1 -I8
I9 -I16
IR9 -IR12 und IR15
The following table shows the possible combinations of COM interfaces
only for PC- Applications
supported by RDI
IRQ9
IRQ10
IRQ11
IRQ12
IRQ15
COM5
I9 closed
IR9 closed
I10 closed
IR10 closed
I5 closed
IR11 closed
(default)
I1 closed
IR12 closed
I3 closed
IR15 closed
COM6
-
-
-
-
(default)
I2 closed
IR15 closed
COM7
-
-
I4 closed
IR11 closed
-
-
COM7-8
shared
-
-
(default)
I8 closed
IR11 closed
-
-
COM6-8
shared
I11 closed
IR9 closed
I12 closed
IR10 closed
I13 closed
IR11 closed
I6 closed
IR12 closed
I14 closed
IR15 closed
7
INTERRUPTS
