Double Spacing On PC-Compatibles                      Faxback Doc. # 17065

TRS-80 PRINTERS DOUBLE SPACING ON PC-COMPATIBLES  These printers will 
generally double-space when connected to any PC-Compatible computer.

DWP-2           (260-1158)*
DWP-210         (260-1257)
DWP-220         (260-1278)
DWP-410         (260-1250)
DWP-510         (260-1270)

LINE PRINTER 1  (260-1150, 260-1152)
LINE PRINTER 2  (260-1154)
LINE PRINTER 3  (260-1156)
LINE PRINTER 4  (260-1159)
LINE PRINTER 5  (260-1165)
LINE PRINTER 6  (260-1166)
LINE PRINTER 7  (260-1167)
LINE PRINTER 8  (260-1168)

DMP-100         (260-1253)
DMP-105         (260-1276)
DMP-110         (260-1271)
DMP-120         (260-1255)
DMP-200         (260-1254)
DMP-400         (260-1251)
DMP-420         (260-1267)
DMP-500         (260-1252)
DMP-2100        (260-1256)

If the printer does not have a switch setting to disable the line feed, you
must send a control code to the printer to disable it.  The easiest way to
do this is through BASIC or QBASIC.  If using BASIC, the following BASIC
program will send the control codes, then return the user to MS-DOS:

10 LPRINT CHR$(27);CHR$(21)
20 SYSTEM

If using QBASIC, use the following program:

LPRINT CHR$(27);CHR$(21)
SYSTEM

Save the program using a name that can easily be remembered, such as
DWP210.BAS.  In BASIC, a file is saved by typing:

SAVE "DWP210.BAS"

Once back in MS-DOS, to run the program, type:

BASIC DWP210.BAS

or 

QBASIC /RUN DWP210.BAS

To run the program.  Insure that the printer is ON and ON-LINE when you
send the control codes.  Each time the printer is powered on, you must re-
send the control codes.  If using BASIC, you can put the line "BASIC
DWP210.BAS" in the AUTOEXEC.BAT file.  If using QBASIC, use the line
"QBASIC /RUN DWP210.BAS" instead.

*For this to work on the DWP-2 (260-1158), the printer must have a serial
number later than 13010163.  If the customer does have a DWP-2 with an
earlier serial number, he can get a BIOS ROM upgrade for the printer that
will allow this to work.  The BIOS ROM upgrade can be ordered from national
parts as part # AMX-5805.  It is recommended that a service center perform
this upgrade (REF: TB I/O 32)

(RS/tmc-10/11/95)

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