IBM 5150 Hardware Reference Manual

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/T rack
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
2-98

IBM 5150 Specifications

General

Processor	Intel 8088
Clock Speed	4.77 MHz
RAM	16 KB - 256 KB
Manufacturer	IBM
Model	5150
Release Year	1981
Storage	5.25-inch floppy drives
Graphics	MDA or CGA
Operating System	IBM PC DOS
Ports	Cassette, keyboard
Expansion Slots	5