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Chapter 5. Control Panel Functions
Values for IPL types, key modes, and speeds . . . 159
Control Panel Functions (Models 150, 170, 250, 4xx,
50x, 51x, 530, 53S, 6xx, 7xx, SB1, and Sxx) ....160
Ways to access the control panel (Models 150,
170, 250, 4xx, 50x, 51x, 530, 53S, 6xx, 7xx, SB1,
and Sxx) ..............162
Control panel function descriptions (Models 150,
170, 250, 4xx, 50x, 51x, 530, 53S, 6xx, 7xx, SB1,
and Sxx) ..............162
Customer control panel functions (Models
150, 170, 250, 4xx, 50x, 51x, 530, 53S, 6xx, 7xx,
SB1, and Sxx) ...........162
Extended control panel functions (Models
150, 170, 250, 4xx, 50x, 51x, 530, 53S, 6xx, 7xx,
SB1, and Sxx) ...........169
Low-Level Debug (LLD) panel functions
(Models 150, 170, 250, 4xx, 50x, 51x, 530, 53S,
6xx, 7xx, SB1, and Sxx) ........171
Control panel functions (Models 270, 8xx, SB2, SB3,
and 890) ...............174
Ways to access the control panel (Models 270,
8xx, SB2, SB3, and 890) .........175
Control panel function descriptions (Models 270,
8xx, SB2, SB3, and 890) .........177
Customer control panel functions (Models
270, 8xx, SB2, SB3, and 890) ......177
Extended control panel functions (Models
270, 8xx, SB2, SB3, 890) ........185
Low-Level Debug (LLD) panel functions
(Models 270, 8xx, SB2, SB3, and 890) . . . 188
Values for IPL types, key modes, and speeds
Table 13, Table 14, and Table 15 describe the valid IPL types, key modes, and
speeds that are used in control panel functions 01 and 02.
Table 13. IPL types
IPL type Action or description
A IPL from disk using copy A of the system Licensed Internal Code.
B IPL from disk using copy B of the system Licensed Internal Code.
C Reserved for hardware service use only under the direction of
Rochester development support. Attention: Severe data loss can occur
with improper use of this function.
D IPL from media other than load-source disk. Alternate IPL for code
installation support.
Table 14. Key mode values
Key mode Action or description
Manual (M) Allows you to access DST and perform an attended IPL.
Normal (N) Allows you to access the operating system and perform an unattended
IPL.
Secure Locks the control panel on the system unit. Found only on systems
with an electronic keystick.
Auto Locks most control panel functions. Automatic IPLs are allowed. Found
only on systems with an electronic keystick.
Table 15. IPL speeds
IPL speed Action or description Details
F: Fast override for one IPL. Fast IPL run. Some hardware diagnostics
are skipped.
© Copyright IBM Corp. 1997, 2002 159