gwyn%brl-vld@sri-unix.UUCP (10/13/83)
From: Doug Gwyn (VLD/VMB) <gwyn@brl-vld> As distributed, UNIX System V supports the following terminals: Datamedia 1520, 3045 Diablo HyType I and II (most daisy-wheel and thimble printers) DTC 382 GE Terminet 300, 1200 Hewlett-Packard 26xx IBM 3270 Tektronix 4014 Teletypes of various sorts TI 725, 735, 745 Trendata 4000a generic line printer generic dumb terminals You should specify to your user population what terminals and printers you will properly support, rather than let them order random equipment.
walsh%bbn-unix@sri-unix.UUCP (10/14/83)
From: Bob Walsh <walsh@bbn-unix> It's really not too difficult to write nroff driving tables. If you have access to the source for one, you can use is as a pattern for any others you want to write. In general, the table looks like information that describes lines per inch... mapping from a character to a string 'a' -> width 1, 'a' alpha -> width 1, either an escape code that accesses an alternate character set or a sequence that uses normal characters to imitate an alpha The table is just an initialized C data structure which is loaded by nroff at run time. Just compile the source and move it to /usr/lib/term. Use the nroff documentation in volume two to help determine the order of the characters in the driving table. For example, if you have a spinwriter you can write driving tables for various thimbles and foreign or mathematical character sets. bob walsh
guy@rlgvax.UUCP (Guy Harris) (10/17/83)
A correction to the "man" pages posted for nroff terminal driving tables:
ignore the part that reads
.I Nroff
assumes that boldface mode is reset automatically by the
.I twnl
string, because many letter-quality printers reset the boldface
mode when they receive a carriage return;
the
.I twnl
string should include whatever characters are necessary to
reset the boldface mode.
This was a local hack required by a bit of braindamage in the NEC Spinwriter
and certain Diablo printers; whenever these printers receive a CR they reset
the auto-boldfacing and auto-underlining modes. Unfortunately this confuses
the hell out of programs with a straightforward and sensible model of the
printers they talk to (like "nroff"); anybody know what prompted this bit of
silliness on NEC and Diablo's part?
Guy Harris
{seismo,mcnc,brl-bmd,allegra}!rlgvax!guy