Interrupt Routing Appendix B
STD-GPIB for Windows B-2 © National Instruments Corp.
Backplane Interrupts
The five STD bus interrupts are INTRQ* (P44), INTRQ1* (P37), INTRQ2* (P50),
INTRQ3* (E67), and INTRQ4* (P6). All five interrupts are supported in an
STD32 backplane and all but INTRQ3* are supported in an STD-80 backplane.
These interrupts are all active-low signals.
Setting Interrupts on the STD-GPIB
The interrupt routing for the STD-GPIB is shown in Table B-2.
Table B-2. STD-GPIB Interrupt Routing
Interrupt
Source Ziatech
Interrupt WinSystems
Interrupt
INTRQ1* (P37) - IRQ5
INTRQ4* (P6) IRQ5 -
INTRQ2* (P50) IRQ6 IRQ9
INTRQ* (P44) IRQ9 IRQ7
INTRQ3* (E67) IRQ14 -
FP2 - IRQ10
FP4 IRQ10 IRQ11
FP6 IRQ11 IRQ12
FP8 - IRQ14
FP10 IRQ12 IRQ15
If you want to use a frontplane interrupt, refer to Table B-1, then Table B-2, to
determine the correct jumper settings for the interrupt level you want to use. For
example, if you want to configure the STD-GPIB to use IRQ10, and you find out
that IRQ10 is connected to the frontplane interrupt connector pin 6 of your
computer, then you would refer to Table B-1 for the associated signal, FP6.
Table B-2 shows that for interrupt source FP6, you should install the jumper as you
would for a WinSystems IRQ12 or Ziatech IRQ11.
If you want to use a backplane interrupt, refer to Table B-2 for the correct jumper
settings. For example, if you are configuring the STD-GPIB to use IRQ9 on the
INTRQ* line in your computer, you should install the jumper as you would for a
WinSystems IRQ7 or Ziatech IRQ9.