IBM 5110 Maintenance Information Manual page 146

DCP I/O Function-5
DIAG
DC?
!:i DCP I/O
DV@
This function allows you to dump read/write storage to a
tape or to a diskette. It also allows you to dump a tape
or a diskette to storage.
The DCP I/O function is a ROS resident program that is
called via the DCP diagnostic mode. To use this function
you must load DCP as follows:
1. Press and hold the CM D key and press the HO LD
key.
2.
3.
Press and hold the CMD key and press the - (minus)
key on the numeric keyboard.
Press the
*
or x (multiply) key on the numeric
keyboard.
4. Press the C key.
5. Press the 5 key.
This function requires input to define the function
desired. The parameters available are:
MK XXX YY ZZ - Selects the mark function (diskette
or tape).
XXX
=
file size in K bytes.
YY
=
number of files.
ZZ
=
starting file.
RD - Selects the read function (from diskette
WT
WTP
or tape).
- Selects the write function (to diskette or
tape).
- Selects the write function with file protect
(diskette).
A XXXX - Defines the starting storage address.
S XXX X - Defines the stop address in read/write
storage (required on write functions).
F
# -
Defines the file number (#).
4-24
IHAG DC?
N name - Defines a file name for all write commands
(17 characters maximum; blanks are not
allowed).
TYY
- Defines the file type which can be optional
for write functions.
C Y - Defines the diskette cylinder number and
forces a single selected sector.
H Y - Defines the diskette head (optional) for
use with the C function.
DV@ XXX - Defines the device address.
Tape/Diskette Read Format:
DV@XXX
L
Device Address
RD~A~XXXX~F~#
T
I
L~~;'~~be'
' - - - - - - - - - - - Read Function
(kS
=
blank space)
Example:
DV@D20
RD A 0228 S 0328 F 2
This example shows the format for reading a diskette on
diskette drive 3 starting at address '0228' and ending at
address '0328'.
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