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6GT2 097-3AH00-0DA2
Formats of different MDS memories:
MDS units with various memory sizes are available with MOBY I. Each type of MDS must be formatted
before processing with the file handler. During formatting, the MDS is given a data structure, divided into
system area, directory and user data. The MDS type is passed to the file handler by the FORMAT com-
mand (see section 3.4.1).
The following table shows how the file handler structures the various types of MDS:
Type
MDS capacity
(Hex)
in bytes (gross)
Enter this
Total MDS
parameter
memory size
when initi-
alizing
01H
81H
02H
03H
83H
04H
2.045
84H
1.778
05H
8,189
85H
7,154
06H
32,765
86H
28,658
* With ECC operation
Subject to change without notice!
RD: 03/02
J31069-D0142-U001-A0-7618
Max. no. of
files
Max.number of
files that can
be stored
62
1
42 *
1
62
2
128
3
112
*
3
16
*
16
32
*
*
32
64
*
64
ASM 421 Technical Description
User data in
bytes (net)
Max. no. of user
bytes that can be
written to the MDS
27
7
12
60
45
1.680
1.440
7,456
6,464
31,488
27,520
6GT2 002-0DA00
– 4 –
6GT2 002-0DB00
6GT2 002-0DC00
Number of
Block size
blocks
in bytes
The product of no. of blocks
and block size gives the user
data length (net) in bytes
1
27
1
7
2
6
6
10
5
9
105
16
90
16
233
32
202
32
246
128
215
128
ASM 421 / V.24
ASM 421 / RS422
ASM 421 / TTY
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