Installation Instructions: AM-642 STOP Converter
Page 7
Rev. A01
Modifying the System Initialization Command File
To define the AM-642 to your computer, use the COPY command to make a copy of your system
initialization command file, calling it TEST.INI. Then edit that copy using the AlphaVUE text editor,
making the modifications discussed in the following sections.
Never modify the system initialization command file directly. Always make a copy and name it,
for example, TEST.INI. Make the modifications described below in that test file. When you have
finished, use MONTST at AMOS command level to test it. If it fails, you can push the reset
button to return to your standard initialization file. If you modify your AMOSL.INI or
AMOS32.INI file directly and make a mistake, the system may not boot at all. If the MONTST is
successful, you can then rename the test command file to AMOSL.INI or AMOS32.INI.
Type the following commands to create a test initialization file. For example, if your computer runs
under AMOS/32, enter:
LOG SYS:
RETURN
COPY TEST.INI=AMOS32.INI
RETURN
Make sure your system backup media contains the AM-642 software files in case you need to restore
your system.
Modifying the Device Table
The first thing you need to do in your TEST.INI file is add a new DEVTBL statement. When used in the
system initialization command file, DEVTBL tells AMOS which devices to look for on the computer. As
AMOS processes the DEVTBL command line, it builds a device table in memory. The file system
consults the device table for device assignments. Every time you add a new device to the system, like
your SCSI streamer drive, you must add it to the system device table.
Locate the DEVTBL statements in your TEST.INI file. Add one that looks like this:
DEVTBL /MTX0
The slash preceding the device name lets AMOS know the device is non-sharable.
Since the device driver program needs to be in system memory, add the following SYSTEM command
prior to the final SYSTEM command:
SYSTEM MTX.DVR[1,6]
Since the MTUxxx programs spawn a separate job to communicate with the tape drive, you may need to
increase the number of jobs allocated by the system at boot time. To increase the number of jobs, find the
line which reads:
JOBS nnn
This line is normally one of the first commands in the .INI file. Increase the number of jobs by one.
