Table of Contents
Advertisement
Section A:
System interface
************************************************************************
•
•
•
101 - Get Directory Label Data Byte
•
•
•
************************************************************************
On entry:
c
65H
E
Drive Number
On return:
A
H
Data Byte or Error Code
Physical Error Code
Possible logical errors!
- none -
Possible physical errors:
1
Read/write error
4
Drive not selectable
Differences to CP/M plus:
- none -
Differences to CP/M 2.2 resp. DiCOS:
New function.
The
data byte of the directory label of the drive specified by register
E is returned in A. On entry, a value of 0 in E denotes drive A, l drive
B
and
so on.
The data byte itself is byte 13 in the
directory
label
entry, containing the foll-owing bits:
Bit
6
Write time-stamps on each file access.
Bit 5
Write time-stamps on file alterations,
Bit 4
Write.time-stamps on creation of new files.
Bit
0
Directory label exists.
If no directory label exists,
A
is returned with a zero value, otherwise
it holds the data byte.
In both cases,
H is set to 0.
Physical errors
are treated according to the current error handling mode.
EOS System manual
Daeumling
&
Zimmermann
Page 109
Advertisement
Chapters
Table of Contents
