Sharp PC-1500A Uživatelský manuál Strana 8

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How to use the
TRAMsoft
Floppy-Extension-Software
(cont)
0PEN
Log.
File-number
,
Primary-adr.
,
Secundary-adr.
,
File-descriptor
0pens a
channel.
-
Log. File-number:
0
..
9
-
Primary-address:
Drive-number 8
..
11
-
Secundary-address:
Channel-number
2
..
14
,
15
for commands
-
File-descriptor:
For
sequential
fi les :
Filename, Fi letype,Filemode
For relative fi les: Filename,Fi
letype,Recordlength
-
Filename:
up
to 16
characters
-F'e'iYP''
.
i:i::
i3i i!iiirt;:il$,.,
-
rrurr
for user-files
-
Filemode:
-
rrArr
append,
add data at the end of the
file
:
::fi::
SB:l l:i ffi?t.
-
Recordlength:
Number
of bytes
per
record.
See
also
manual
of
the VC 1541.
PRINT /l
-
Device-number
,
Log. File-number
,
Variables-list
Writes data from variables to
the
floppy.
-
Device-number:
15 for floppy-interface
-
Log. File-number: 0
..
9
-
Variables-list:
List
of variables
or expressions
The
0PEN-variable
The OPEN-variable
contains
all information
about an
opened channel.
Each
0PEN-instruction
creats an OPEN-variable
(mayby
even if
an
ERROR
occurs).
A
CLOSE
connand
delets the
appartaining OPEN-variable.
OPEN-variables have
the
name
o0
.. o9 and cannot be accessed from BASIC,
except with DSH0W$. Never
use
NEll
0
or CLEAR while files
are opened, if a
files is not
orderly closed, data
might be lost
!
Contents
of an OPEN-variable:
pp,sS,nnnnnnnnnnnnnnnn,t,m,lll
l,{here:
p:
Primary-address
s: Secundary-address
n: Filename
t: Filetype
m: Filemode
l: Recordlength
2
characters)
2
characters)
16
characters)
1
characters)
1
characters)
3
characters)
16/09/85
TRAMsoft
PF-7
e
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