Category : Alternate Operating Systems - Quarterdeck DesqView, CP/M, etc
Archive   : DRTIPS.ZIP
Filename : 1904.TXT

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TITLE: PRINTMAP and Printer Commands
DOCUMENT ID#: FYI-M-1904
DATE: 28DEC92
PRODUCT: DR Multiuser DOS
PRODUCT VERSION: 5.x
SUPERSEDES: 13APR92

SYMPTOM: Additional information on PRINTMAP

ISSUE/PROBLEM:

DOCUMENTATION REFERENCES
- Page 16-42 in the DR Multiuser DOS User Guide
- Pages 13-2 to 13-4 in the DR Multiuser DOS User Guide
- Pages 11-115 to 11-116 in the DR Multiuser DOS User Guide

DEFAULTS
- The first concept to understand about DR Multiuser DOS port
assignments is: while most DOS applications (and therefore most DOS
users) refer to the printer ports as LPT1, LPT2, etc., and to the
serial ports as COM1, COM2, etc., DR Multiuser DOS uses these
device names as logical names only, each of which can be mapped to
any physical port. The physical ports are known to DR Multiuser
DOS as PRN0, PRN1, etc. (for printer ports), and AUX0, AUX1, etc.
(for serial ports).

- The default assignments for PRINTMAP can be seen by typing
PRINTMAP at a prompt. They are as follows:

Logical name Physical Physical port
name

LPT 1 Printer 0 Parallel Port 0
LPT 2 Printer 1 Parallel Port 1
LPT 3 Printer 2 Parallel Port 2

COM 1 Aux 0 COM1 Port
COM 2 Aux 1 COM2 Port or
Multiport 1


- The default descriptions for each possible printer and serial
device are stored in a file called PRINTMAP.DAT (in the OSUTILS
directory). For printing from the console, they are as follows:


Physical name Physical port

Printer 0 Parallel port 0
Printer 1 Parallel port 1
Printer 2 Parallel port 2
Printer 3 COM1 port
Printer 4 COM2 port or Multiport 1
Printer 5 Multiport 2
Printer 6 Multiport 3
. .
Printer 15 Multiport 12

Aux 0 COM1 port
Aux 1 COM2 port or Multiport 1
Aux 2 Multiport 2
Aux 3 Multiport 3
. .
Aux 15 Multiport 15

For printing from a terminal:
***The default printer for a terminal is the printer off the back
of that terminal. To the software running on a terminal, "LPT1" is
the printer that is local to the terminal, by default. To change
this, a PRINTMAP or PRINTER command would be needed.

- The syntax of PRINTMAP, in general is:
PRINTMAP Logical name = DR Multiuser DOS Physical name
The effect of this is to map the physical port to the logical port
name for this session only. If the mapping needs to take effect
for every session on a given terminal, put /* after the mapping.

EXAMPLES

- To send all output that software has directed to LPT3 (from the
session the terminal is in) to the printer defined by the system as
Printer 3 (the printer that is plugged into the device which is
plugged into port COM1), type
PRINTMAP LPT3 = PRN3

- To assign the label LPT4 to the printer plugged into the second
parallel port on the system, type
PRINTMAP LPT4 = PRN1

- To reassign the value of LPT1 for a session, one could either
type
PRINTMAP LPT1 = PRNx
where x is the printer number one wishes to use, or one could use
the PRINTER command, to type PRINTER x. This will make all output
to LPT1 from this session go to printer x. The x is from the DR
Multiuser DOS physical device name, as listed above.