IBM 5150 Hardware Reference Manual

Command Summary (continued)
DATA BUS
PHASE
RIW 07
06 05 04 03
02
01
DO REMARKS
WRITE DELETED DATA
Command
W
MT MF
0
0
1 0
0
1 Command Codes
W
X
X X
X X
HO
US1 usn
W
C
Sector 10 information
W
H
prior to command
W
R
execution
W
N
W
EDT
Execution
Result
W
W
R
R
GPL
DTL
ST 0
ST 1
Data-transfer between
FDD and main-system
Status
10 information
after common execution
f:
f;
f:
~
I=.:
R
ST 2
R
C
Sector 10 information
R
H
after
command execution
R
R
R
N
READ A TRACK
Command
W
0
MF SK
0 0
0
1 0 Command Codes
W
X X
X X X
HD
US1 usn
W
C
Sector 10 information
W
H
prior to command
W
R
execution
W
N
W
EDT
W
GPL
W
DTL
Execution
Data-transfer between
the FDO and main-system.
FDC reads all of cylinders
contents from index hole
to EDT.
Result
R
STO Status information after
R
ST 1 command execution
R
ST 2
R
C
Sector 10 information
R
H
after
command execution
R
R
R
N
READID
Command W
0
MF
0
0
1 0 1
0
Command Codes
W
X X X
X X
HD
US1 usn
Execution
The first correct ID
information on the
cylinder is stored in
data register.
Result
R
STO Status information
R
ST 1 after command execution
R
ST 2
R
C
Sector 10 information
R
H
during execution phase
R
R
R
N
2-97

IBM 5150 Specifications

General

Brand	IBM
Model	5150
Category	Desktop
Language	English