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1991-07-11
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DLITE
DLITE is an OS/2 device driver which simulates a disk activity light
on the system information display panel of the PS/2 Model 95. It is
based on the DOS program LIGHTS.COM written by Paul Boehler.
DLITE PACKAGE consists of three files:
DLITE DOC This document
DLITE NEWS Documentation of changes
DLITE SYSBIN The device driver
To install DLITE, download DLITE SYSBIN as DLITE.SYS. Add the following
statement to your CONFIG.SYS file:
| DEVICE=c:\path\DLITE.SYS ╒char■
|
| Where "c:\path\" is the path where DLITE.SYS resides. "╒char■" is the
| hexadecimal representation of an ASCII character used to display disk
| activity - default is 7F which is a checkerboard pattern. You will need
| to reboot to activate DLITE. Some examples follow:
|
| DEVICE=C:\UTIL\DLITE.SYS 2A displays an "asterisk"
| DEVICE=C:\UTIL\DLITE.SYS 44 displays a "D"
| DEVCIE=C:\UTIL\DLITE.SYS defaults to "checkerboard"
DLITE works by getting control on a timer tick, checking port 92H for
an indication of hard disk activity, and outputting a character to the
eighth LED in the display panel to indicate disk activity. Approximately
ten instructions are run on every other timer tick. If DLITE is run on
a model other than the 95, it seems to be relatively harmless except for
the overhead, but of course it will display nothing.
If DLITE is run with another program that writes to the system information
display panel on the Mod 95, DLITE will take over the eighth LED digit, but
have no effect on the other seven.
Lou Voerman VOERMAN at PKSMRVM