Table of Contents
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Section A:
System interface
***********************~******************~~**~*~~~~*~*~****~~*******•**
*
*
*
*
4~
- Write Random with Zero fill
*
*
*****~**~*~*~************~**~**~*~*~~~~~~~*~~*~***~*********************
On entry:
c
2BH
DE
Address fo FCB
On return:
A
Error
c~e
H
Physical error
Possible logical errors:
2
Disk storage exhausted
3
Logical error in directory
5
Directory full
code
6
Invalid Random record number
7
Maximum file size exceeded
9
Invalid FCB
Possible physical errors:
1
Read/write error
2
Drive is write protected
3
File is write protected
4
Drive not selectable
9
Question marks in file name
Differences to CP/M plus:
The highest possible block number is 65535
Differences to CP/M 2.2 resp. DiCOS:
- none -
0FFFFH,
This
function is equivalent to function
34,
write random,
It
differs
in
the respect that previously unallocated disk areas are
filled
with
zero
bytes,
resulting in well-defined disk contents,
Function 34 does
not
initialize new allocated disk space,
which
causes
uninitialized
areas or gaps in the file.
EOS System manual
Daeumling
& Zimmermann
Page 79
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