2-3
MS-DOS
1)
Memory
map
The
MS-DOS
memory
is
mapped
as
illustrated below.
BIOS,
IDeS
and
SYSINIT
are
linked on the
HP
in their
given
order
and
comprise 10 SYS.
Interrupt
Vector
Table
40H:O
BIOS
(Device Driverl
10SYS
r---
-.-
-
--
-----
IOes
(Code section)
xx:o
loeS
MSDOS
t
x
:
o
SYS
(Data section)
MSDOS
2)
MS-DOS
commands
(a)
Disk control commands
Command
In/Out
Function
name
CHKDSK
Out
Analysis
the
directory
and
FAT
and
checks
the
state
of
the
disk.
DISKCOPY Out
Duplication
of
a whole disk
contents
FORMAT Out
Disk initialization. volume label write.
system file
copy.
etc.
VOl
In
Display
of
volume label
(b)
Directory
and
file control commands
Command
In/Out Function
name
CHDIR
In
Changing or displaying
the
current
directory
contents
COpy
In
Duplication
of
the
specified file
DEL
In
Deletion
of
the
specified file
DIR
In
Displaying
of
the
directory
MKDIR
In
Creation of
directory
PATH
In
Providing
the
pass
to
trace
the
command
RECOVER Out
Recovery of
the
file
or
directory
REN
In
Changing
the
file name
RMDIR
In
Deleting
the
directory
FC
Out
Comparison
of
two
files
TYPE in Displaying
of
the
contents
of
the
specified
file
(c)
System
operating commands
Command
In/Out Function
name
BREAK
In
Changing
the
break interrupt check range
ClS
In
Clear of
the
screen
CTTY
In
Change
of
i/o
device
DATE
In
Display
or
set
of
the
date
EXIT
in
Return
to
the
program which initiated
the
command
FIND
Out
Search
of
the
character string
3)
Logical drive map
logical drive
A
I
B
CiD
E
I
F I
G I
H
Device
MFD
HD
SFD
Physical drive
o 1
1
0 0
I
1
I 2 I
3
-
MZ-5600
MORE
Out
Output
of
screen
one
at
a
time
PRINT
Out
Printer
output
from
the
background
PROMPT
In
Setting
command
prompt
SET
In
Changing
the
value of
the
character string
SORT
Out
Rearranging
the
data
in
the
alphabetical
order
or
reverse alphabetical order
TIME
In
Display
or
setup
of
the
time
VER
In
Displaying
of
the
MS-DOS version number
VERIFY
In
Verifying
the
disk
contents
(d) Program developing commands
Command
In/Out
Funcition
name
EXE2BIN Out
Changing
the
EXE file
to
the
COM
file
EDLlN
Out
Uneeditor
MASM
Out
Macro assembler
LINK
Out
Llnker
LIB
Out
Library manager
CREF
Out
Creation
of
cross reference
(e) Batch processing commands
Command
In/Out
Function
name
ECHO
In
Choice
Is
made if
the
command
were
to
be
displayed during execution of
the
batCh
program
FOR In Command
is
repeated
to
execute while
substituting with
the
specified element
GOTO
In
Moves
to
the
line in which
the
control
specified label
is
existing
IF
In
Executes
the
command
when
the
specified
condition
is
true
.
PAUSE
In
Temporary halt of
the
batch process
REM
In
Displaying
of
the
comment
SHIFT
In
Shifts
the
parameter allocations
(expanded use
of
parameters)
(f)
Other commands unique
to
the MZ-5600.
Command
In/Out
Function
name
KEY
Out Sets or changes
the
definable key function
INSTALL Out System installation
is
done
to
the
printer
and
option
devices
10CNF Out Saves BIOS parameter. assigns
or
deassigns
the
read-after-write check
to
the
floppy
disk.
computers
memory disk logical drive
number
and
physical drive number
MODE
Out
Input/output
unit
mode
setup
ASSIGN Out Performs drive
unit
assignment
BKUP
Out The
contents
of
the
hard disk
is
backed up
on
the
floppy disk
BRST Out The hard disk
data
are restored from
the
beckup floppy disk
I I
J M
Q I R
MFD MFD
2 I
3 -
0
t
Memory disk
-9-
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