Tandy 1000 MS-DOS Reference Manual page 358

Appendix C I Installable Device Drivers
Whenever you boot the system, KEYCNVRT.SYS converts the
following keyboard codes:
Key
Slash
(I)
Vert. Line
(I)
Tilde
n
Single Left quote (')
minus ( - ) (DELETE NUMLOCK)
plus (
+ )
(INSERT NUMLOCK)
Tandy Scan
ASCII Code
475C
4B7C
487E
5060
532D
552B
Converted Te
2B5C
2B7C
297E
2960
4A2D
4E2B
) i
.
,
I
'----'
LPDRVR.SYS
(For Extended Printer Capabilities)
The loadable printer driver extends the useable capabilities of a
Tandy printer. The functions of LPDRVR are:
• Set the number of lines per page
• Set vertical tabs
• Set the form feed function
• Set horizontal tabs
• Tab horizontally
• Set the skip perforation function
• Cancel the skip perforation function
• Ignore the next
n
codes
• Reset the printer driver
• Convert a single code into a series of printer codes
• Repeat
n
characters
• Suppress the line feed function
Include this DEVICE command in your CONFIG.8YS file to
install the printer driver:
DEVICE
=
LPDRVR.SYS
Next, look up the function's control code sequence in the Printer
Control Codes table in this section. Then find the equivalent
ASCII code(s) in the ASCII Character Code table in Appendix A.
For example, the control code needed to set lines per page is
ESCAPE C;n. The ASCII equivalent of ESCAPE is 27. The
ASCII equivalent of C is 67.
n
is the number of lines.
Finally, send the control code sequence, in ASCII form, to the
printer driver. You can do this in any of three ways.
334
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