Radio Shack TRS-80 Model II Reference Manual page 6

VERSION 2.0 UPDATE
SYSTEM64 and SYSTEM32
Only one of these two is needed in your system. If you have a 64K RAM system, keep
SYSTEM64 and delete SYSTEM32; if you have a 32K RAM system, keep SYSTEM32 and
delete SYSTEM64.
We will refer to the remaining file as
SYSTEMnn. nn
== 32
or
64,
depending on
which one you kept.
SYSTEMnn
contains the high-memory routines for: HOST, SPOOL, SETCOM and all
serial
110,
DO and DEBUG. You should keep this file on your working master. If you
have an application which will not require any of the above-listed capabilities, you
may delete it.
HERZ50, LPII, PRTBKSP
These are Do-files which allow you to make specific changes or' 'patches" to
system files. See HERZ50, LPn and PRTBKSP for descriptions. If you don't need to
make any of these changes, you may delete these files from your working master.
Or if you do need to make them, delete them after they are used.
DOCOMnn, BASCOMnn, COMSUBnn, EXDATMnn,
DATMnn (nn
=
32
or
64)
These are demonstration programs and routines. See the descriptions elsewhere in
this manual (use the Index).
For each file, there is a 32K RAM and a 64K RAM version. You should keep the
version that matches your system's RAM size and delete the other.
These files are for demonstration and incidental purposes only. You may delete any
or all of them from your working master, depending upon your needs.
(Programmers should study how they work, to gain insights into techniques for
using TRSDOS.)
4. Upgrade Diskettes from Previous Versions
(XFERSYS)
This section applies only to customers who have been using a previous version of
TRSDOS. New customers may skip it.
All diskettes
~
, 'system" and" data' , - must be converted before they can be
used underTRSDOS 2.0. The XFERSYS utility program does this for you. Attempts to
use un-converted
1.2
diskettes under
2.0
may destroy the information on the
diskettes.
See XFERSYS for the proper procedures to upgrading a diskette. Follow them
carefully!
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