SPI Programming Manual (G06.24+, H06.03+, J06.03+)

SPI Concepts and Protocol

SPI Programming Manual—427506-006

2-46

SSID Scope

Subsystem IDs are stored in the header token ZSPI-TKN-SSID, in some token codes,

and in the error list token ZSPI-TKN-ERROR. The SSID that governs a particular token

is determined as follows:

•

If the token code contains an SSID, that SSID owns the token.

•

If the token code does not contain an SSID, the token belongs to the SSID of the

list in which the token is enclosed. In the case of nested lists, the SSID of the token

is that of the list that immediately encloses the token.

Figure 2-14. The Subsystem ID Structure

Subsystem Subsystem Subsystem

Owner Number Version

01234567891011Byte

Structure Field

(Z-Owner) (Z-NUMBER) (Z-VERSION)

The name of the subsystem owner

(case-sensitive, left-justified, blank-

filled, with no embedded spaces)

The subsystem number

The subsystem version (the ASCII version

letter in the left byte, and the binary version

number in the right byte of the integer field)

Example: The SSD for the D20 version of the Subsystem Control Point:

TANDEMbb 25 D20

01234567891011Byte

Subsystem Subsystem Subsystem

Owner Number Version

b denotes an ASCII blank character)

ZSPI-SSN-ZSCP

"D20"=17428 when the character "D" is stored

in the left byte and the number "20" is stored

as a binary number in the right byte of the

integer field.

VST018.vsd