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MZ3500
o
Block number allocation
The
program
and
data
areas
are
located
after
Track
2
1
block
= 2K
bytes
(8
sector)
(Double side)
2Kx
152 =
304K
Each
track
is
blocked
in the
following
manner:
1
sector
3
5
13
15
sector
1
block
2 sec tor '
4
6
14
16
sector
1
block
o
Track
1,
Sector
1
information
(CP/M)
0
5
(Single
sided)
track
2
3
I
38
39
Block
No
Front
BO
Bl
B4
B5
B144
6145
B148
B149
Reverse
B2
B3
B6
B7
B146
B147
B150
B151
track
2
3
I
38
39
Block
No
Front
BO
Bl
B2
B3
B72
B73
B74
B75
2KX
76=152K
10
15
AA
TRACK
SIDE
SECTOR
N
SECTO
^1
NUM
BER
i
i
i
i
i
i
PATAT
*ANSF|
-TRACK
ER
NU
1KAt
*
MBER
1
SIDE
SECTOR
N
t
t
......
Drive
unit
specification
Represents
the
system
media
(•
Load
address
Start
address
BOOT
20
SUB-IOCS
50
51
SECTO
R
NUM
BER
TRACK
SECTO
R
NUM
BER
SECTO|~
I
R
NUM
T?F%!
\
BER j j
Indicates
the
end
SIDE
=
.
_ 0
Single density
(front,
Track
0)
1
Double density (other
than
front.
Track
0)
0
Side
0
(front)
1
Side
1
(reverse)
Nosof
data
transfers
= INT
[IOCS capacity/1
K] + 1
• Sub
IOCS
can be
divided
into
either blocks
If
divided
to
less
than eight blocks,
the
block that follows
-
68-