Worth Data P11/12 - Manual (Page 38)

B-3
Slot Installation with Bus Communication
For computers running DOS, the internal WDP Reader can be mounted in any
unused ISA slot and jumpered to communicate with the bus directly. Internal Bus
installation is normally a factory-special order (WDP Model P31/32) which
includes BusKey software but no reader case or Velcro for mounting the case.
Because the WDP Reader is not physically connected to the keyboard, it requires
the program BusKey to read bar code data from the bus and place it into the
keyboard buffer.
See Appendix C for the jumper settings (JP4,JP5, and JP7) necessary to convert the
WDP reader board to communicate directly with the bus.
The DOS program BusKey is used only when the WDP Reader is installed in
Internal Bus mode. BusKey is a memory-resident program (TSR) that works in the
background to read bar code data from the bus and place it into the keyboard
buffer, making it look to your computer and software as if the data had been typed
at the keyboard. Most people will want to put BusKey in their AUTOEXEC.BAT
file for automatic loading at boot time.
Installing BusKey
To copy BusKey onto your system, simply use the DOS COPY command. For
instance, to copy BusKey onto hard disk C:, place the BusKey distribution diskette
into drive A, log into the hard disk directory you want to install BusKey in, and at
the C> prompt type:
Copy A:BusKey.Com /v
BusKey Parameters
When you run BusKey, you need to give it parameters specifying the interrupt and
port address you've set the WDP Reader to. If you're not sure of these, go to
Appendix C and read about setting the interrupt number and port address. The
syntax is:
BusKey P=ppp I=i
where ppp equals the port address in hex, and i equals the interrupt number. For
example, if you've set the WDP Reader to port 240 and interrupt 5, you'd start
BusKey like this:
BusKey P=240 I=5
If you run BusKey with no parameters, it will use the default settings of p o r t
220 and interrupt 3, the equivalent of BusKey P=220 I=3 typed at the DOS
prompt.
See Appendix C for the jumper settings (JP4,JP5, and JP7) necessary to convert the
WDP reader board to communicate directly with the bus.