IBM 2025 Maintenance Manual page 116

Seek Command Code
Command
Decimal
Hexadecimal
Binary
Seek
07
07
00000111
Seek Cylinder
11 OB 00001011
Seek Head
27 1B
00011011
Figure 1-102. 2311/DAC Operaticn Codes for
Seek Comrrands
Byte 0
Byte 1 Byte 2
Byte 3 Byte 4
00000000
Binary
00000000 00000000 00000000 to
00000000
11001010
Hexadecimal
00
Equivalent
00
00 00
to 00
CA
Figure 1-103. 2311/DAC 6-Byte Seek
Commands
Space Count Command Code
Decimal Hexadecimal Binary
15
OF 00 0 0 1 1 11
Byte 5
00000000
to
0000100·1
00
to
09
Figure 1-104. 2311/DAC Operation Code for
Space Count Command
Sense
1/0
Command Code
Decimal Hexadecimal Binary
04 04 00000100
Figure 1-105. 2311/DAC Operation Code for
Sense Corrrra nd
1-106 (7/69)
Read R 0 Command Code
Decimal Hexadecimal
Binary
22
16 00010110
Read RO Command Code Multiple-Track
Decimal Hexadecimal Binary
150 96 10010110
Figure 1-106. 2311/DAC Read Track
Descriftor Record (RO)
Command Codes
Read HA Command Code
Decimal Hexadecimal Binary
26
1A 00011010
Read HA Command Code Multiple-Track
Decimal Hexadecimal
Binary
154 9A 10011010
Figure 1-107.
2311/DAC Read Home Address
Command Codes
Read Count Command Code
Decimal Hexadecimal Binary
18 12
00010010
Read Count Command Code, Multiple-Track
Decimal Hexadecimal
Binary
146
92 10010010
Figure 1-108. 2311/DAC Read Count Command
Codes