HP 24SII - Manual (Page 32)

This section is intended to provide instructions on how to set up your
PC to work with the Model 24SII DES with respect to the BayTech
software (if you intend to use it) and special considerations to keep in
mind when connecting your PC to the Model 24SII DES in parallel or
in serial.
If you intend to use the RAMEXEC (text mode) or RAMTSR (graphics
mode) hot key program to select between multiple peripherals, you
should have both the RAMEXEC and SETUP or the RAMTSR and
SETUPCFG files copied onto the hard drive of your PC.
NOTE: If you have a working copy of RAMEXEC (or RAMTSR) from
a PC that has already configured RAMEXEC (or RAMTSR) for your
application (i.e., added all the appropriate peripheral device
selections), there is no need to copy the SETUP (or SETUPCFG) file
to the new PC. SETUP (or SETUPCFG) is required only if you want
to make changes to your current version of RAMEXEC (or RAMTSR).
You would typically add RAMEXEC (or RAMTSR) to your PC's
AUTOEXEC.BAT file. The RAMEXEC (or RAMTSR) command
should be located after the PATH command and before any DOS
shell commands. If you copy the BayTech software onto a
subdirectory, the subdirectory must be included in your PATH
command.
When connecting your PC in serial to the Model 24SII DES, you
would typically reroute the parallel output to the serial port via the
DOS MODE command:
C:> MODE LPTx: = COMy
(where x=1, 2 or 3; y=1 or 2).
This command should be part of your AUTOEXEC.BAT program.