IBM 5150 Hardware Reference Manual page 117

Command Summary (continued)
OATA BUS
PHASE R/W 07
06 05 04 03 02 01 00
REMARKS
FORMAT A TRACK
Command W
0
MF 0
0
1 1 0
0
Command Codes
W X X X X X HD US1
usn
w
N
Bytes/Sector
W SC Sector/Track
W
GPL Gap 3
W
0
filler byte
Execution
FOe formats an entire
cylinder
Result
R ST 0 Status information
R
ST 1
after command
R
ST 2 execution
R
C I
il
this case, the ID
R H information has no
R R meaning
R
N
SCAN EQUAL
Command W MT
MF SK 1 0 0
0
1 Command Codes
W X X X X X
HO
US1
usn
W C Sector lDinformatio n
W H
prior to command
W
R execution
W N
W
EDT
W GPL
W STP
Execution Data compared between
the FOD and main-system
Result
R STO Status information after
R
ST 1 command execution
R ST 2
R
e
Sector ID information
R
H
R R
R
N
SCAN LOW OR EQUAL
Command W MT MF SK
1
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
W GPL
W STP
Execution Oata compared between
the FOO and main-system
Result R
STU Status information after
R ST 1 command execution
R ST2
R
C Sector 10 information
R
H after command execution
R
R
R N
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