Commodore RF512C - Append; Record

19
APPEND
Function APPEND is an interpreter command and A is the
Fo rmat
BASIC
BASIC
7.0
Syntax
mnemonic of
append direct command, both
can reopen an specific sequential file to append
data .
stringS = "O:filename,A:'
APPEND#file"',
"filename" [, D drive"', U device"']
APPEND# fi le"',(filenameS) [, D drive"',U device"']
Remember there has no single instruction
in
BA SIC 2.0 that's equilvent to A PPE ND, so the first
format can only work in multi-command form.
The fi lename must be a str i ng (i .e. name of some
disk
fi le).
The
dev i ce " de fault value is 8.
The drive'"
de f au lt value is O.
Where the preceding letters D and U please
refer to SY
NTA X.
Ex
ampl e: Refer to chapter FILE PROGRAMMING
RE C ORD
Fun ction Th is in terpreter command can set the relative file
Form at
BASIC
BASI C 7.0
Syntax
Ex
ample :
pointer to any byte of any record
in the file.
st ringS= CHR S (80) +CHRS (96 +CHANNEL"')+
CHRS[l o-recor d"' ]CHRS (hi-record"')
[ +
CHRS (byte"')]
RE C ORDN- file"',record"'[.byte"']
The file'" must correspond to the opened logical
f il e. .
The r ecor d'" value is fr om 1 to 65535
The byte'" value
is fr om 1 to 254
If r
ecord'" is hi gher than the preset file record
number,
add iti onal r ecord ( INPUT '" mode) wi ll be
return where record"' =256 * (hirec'" )+(I orec "').
Referto
FILE PROGRAMMING