Files
Digital-Research-Source-Code/MPM OPERATING SYSTEMS/MPM I/MPM I SOURCE/14/apnote04.tex
Sepp J Morris 31738079c4 Upload
Digital Research
2020-11-06 18:50:37 +01:00

54 lines
1.9 KiB
TeX
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

D I G I T A L R E S E A R C H
P. O. Box 579, Pacific Grove, CA 93950, (408) 649-3896
*** MP/M 1.0 ***
Application Note #04
Customizing the MP/M Sign-on Message
------------------------------------
The MP/M 1.0 sign-on message can be customized to include an
ASCII string of your choice which is up to 35 characters. The
string must be terminated with an ASCII '$' character.
The following steps can be used to customize the MP/M sign-on
message:
1.) Obtain access to CP/M version 1.4 or 2.0.
2.) Read the XDOS.SPR file into memory using either DDT
or SID.
A>SID XDOS.SPR
SID VERS 2.0
NEXT PC
2600 0100
3.) Store your customized sign-on message beginning at
location 022AH. Note that the message should probably begin
with some <cr> and <lf>'s and that it must be terminate with
a '$' character.
-S22A
022A -- 0D
022B -- 0A
022C -- "New sign-on message$
0240 -- .
4.) Return to the CP/M console command processor (CCP) by
executing a jump to location zero and then save the updated
memory image onto a disk file using the CP/M 'SAVE' command.
-G0
A>SAVE 37 XDOS.SPR ; 37 = 25H
5.) Run the GENSYS program which will integrate the new
XDOS.SPR into the MPM.SYS file.