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Installation Guide
However, due to the large variety of add-on boards that
may be present in the PC, your PC ELITE IEEE board may
need tayloring to suit your setup.
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The DIP Switches And Jumper Blocks.
The PC ELITE card has one 6 way DIP switch block, the
switches are clearly marked 1-6. DIPs 1-2 select the PC ELITE
card base address. DIP 3 selects PC2 or PC2a compatibility and
in conjunction with DIPS1-2 determines the cards base address.
DIPs 4-6 are used, in PC2a mode only, to select the interrupt
clear address, they have no effect in PC2 mode.
The PC ELITE card has two jumper blocks, each clearly
marked. One set of jumpers controls the interrupt request
selection the other the DMA channel selection. The IRQ jumper
block, can be set to produce IRQ interrupt signals - such as
when an IEEE device asserts its Service Request line, SRQ, to
signal that it has data ready for the PC. The DMA jumper block
can be set to allow Direct Memory Access i/o under various
circumstances.
These options are communicated by the user to the
computer using the Professional 488 Device Driver software or
via your third party IEEE software using its own set up or
configuration routine.
It is worth noting, that the PC ELITE IEEE i/o address
map, in PC2a mode, is identical to the IBM GPIB and the
classic National Instruments GPIB PC2A board and it will run
ALL software that these boards run. IBM'S GPIB, N.I.'S PC2A,
our PC IEEE and the PC ELITE cards can all co-exist happily
in the same computer provided that they are set to different i/o
addresses.
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Setting The I/O Address.
By referring to the PC ELITE IEEE card locate the I/O
Address DIP switches at the lower left hand corner of the board.
Chapter 2
PC Elite Reference
2-11
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