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Commodore Disk User Volume 4 #3
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Commodore_Disk_User_Vol.4_3_1991_-.d64
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external help
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EXTERNAL COMMANDS
FOR
OPEN SYSTEM KA43/5
All commands have the syntax:
<left arrow>X"COMMAND"',EXPRESSION'
where <EXPRESSION> is mandatory
and 'EXPRESSION' is optional
Do not print these brackets, they are
only shown for your convinience.
After a command is loaded, a recall can
be made with only :
<left arrow>X',parameters'
Eg. : <l.arrow>X"AUTO",100,10
and later : <l.arrow>X,100,10
EXTERNAL COMMANDS:
"APPEND","NAME"',D'
where D=1 for tape and 8 for disk.
"AUTO",<line start>',step'
Auto linenumbering. Cusor down to an
empty line and press <RETURN> to
disable.
"BIG CHARACTERS"
Prints double height characters to the
text screen. This is achived with the
same text on two adjacent lines, the
second time with RVS on. Use NORSK or
another foreign font to configure the
computer for RAM based characters
before you enter this command.
"DATA AUTO",<line start>',step'
as AUTO with DATA written automatically
after the linenumber.
"DELETE",'lineno'-'linjeno'
deletes all lines between given
numbers.
"EASY LIST"
prints CBM control codes as readable
mnemonics. Repeat <l.arrow>X to turn
off EASY LIST mode.
"FILE-READER","FILE"',D'',M'
reads files, both SEQ and PRG, from
disk to device D where 3 is screen
(default) 4 to 7 are printers and 2 is
RS232C (OPEN file 125 before sending to
RS232C,eg.:OPEN 125,2,3,CHR$(8)+CHR$(1)
for 1200 baud. POKE<Adr.+341>,2 if you
use KA43/5 as this will let the the
conversion from PET ASCII to Standard
ASCII take effect on the RS232C
channel. Use <l.arrow>C2).
M is mode, 0 for only printable
letters (all control codes off,
default) while 1 gives all letters
(transparent). LOCK the screen with
SHIFT, and STOP with F7.
"FIND",'start lineno':<hunt>
hunts expressions in a BASIC program.
If you are hunting for reserved Basic
words, they must be enclosed in single
apostrophes (i.e. SHIFT 7).
"FUNCTION KEYS"
Finish key definition with left arrow
for automatic 'RETURN'. RUN/STOP
RESTORE for reset. Start up without
redefining: POKE788,144:POKE789,192.
"HELP KA43/5"
Help menu
"KLOKKE"',hour:min:sec' WATCH
"KLOKKE",B to disable (blank), but the
watch keeps going. Only "KLOKKE" to
turn on display again. You should
disable before SAVE'ing. Both hour, min
and sec must be set!
"KOPI"
Dumps text screen to printer using the
character font of the printer
"MERGE","NAVN",<D>
only for disk with D from 8 (normal
disk no.) to 15. The merged file from
the disk overwrites any lines in memory
with the same number.
"NORSK"
Foreign character set (others are also
available on the system disk). The
screen address is 52224 (=204*256), and
the character set lies under the
KERNAL. You can print out the character
set with <l.arrow>G27,224.
"OLD"
Resets a lost BASIC program
"RENUMBER"',start'',step'',line-line'
Use line-line when you only want part
of a Basic program (i.e. only old lines
between numbers given) renumbered.
"VARIABLE DUMP"
Shows the variables and their values
when a Basic program has been run.
OSLO 15-JAN-1989 by K. Aanestad
HINT AND TIPS
It is good practice only to use one
EXTERNAL COMMAND at a time. Remember
that <l.arrow>X jumps to last program
loaded. Keeping to this habit you will
never need to remember the start
address, and you avoid to overlap
programs and lock-ups . NORSK and
KLOKKE (i.e. foreign character sets and
watch) can both be in RAM at the same
time. None of these will interfere with
any of the other EXTERNAL commands.
OLD, DELETE, APPEND and MERGE will not
work on a BASIC program with a
machine-code tail (eg. the KA43
loader). RENUMBER may have problems
with some Basic extensions. All
commands are independent of KA43/5 and
can be used with their SYS<address>.