Line Printers and Kernel
tif at cpe.UUCP
tif at cpe.UUCP
Tue Oct 4 07:58:00 AEST 1988
Written 6:04 pm Sep 30, 1988 by rpp386.UUCP!jfh in cpe:comp.unix.xenix
>In article <644 at quando.UUCP> wichert at quando.UUCP (Peter Wichert) writes:
>>1. The problem which occured is that the printer would not work as fast
>> as possible .
>SCO. then, if that doesn't fix it, there is a polling parallel driver
>out there someplace. use it instead.
This is an investigation still underway but here are two bits fer ya...
1. Polled printing can be accomplished by mknod'ing a device
with a minor node of (n + 64) where n is your current (not
polled) printer device. This (like most USEFUL information)
is in the Release Notes.
2. There is a global variable, pabusycnt, in the kernel which
determines (for a polled device) how long to wait for the
printer to become un-busy. Default is 64 I think. This
information was in one of the DiSCOver magazines.
Note that both of these steps are likely to decrease system performance.
This information is only a summary of otherwise available information.
Further disclaimers apply and are available upon request :-)
Paul Chamberlain
Computer Product Engineering, Tandy Corp.
{convex,killer}!ninja!cpe!tif
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