Technical data

Result You can evaluate the result of the TSC operation in condition codes
CC 0 and CC 1, as follows:
CC 1 CC 1 Explanation
0
1
0
0
0
1
The busy location contains the value "0"; the
CPU enters its slot ID.
The CPUs own slot ID is already entered in
the busy location.
The busy location contains a different slot
ID.
Note
All CPUs
requiring synchronized access to a common global
memory area
(page area) must use the TSC operation.
Error reaction The location must be on the corresponding module and on the
common page between F F400H and F FBFFH. If this is not the case,
the CPU recognizes a runtime error and calls
OB 32, providing it is
loaded. If OB 32 is not loaded, the CPU goes to the stop mode.
In both cases, error IDs are entered in ACCU-1-L, that define the error
in greater detail (see Section 5.6.2).
Load and transfer
operations for the pages
organized
in bytes
Operation Operand Explanation
LY CB
LY CW
LY CD
-32768 to
+32767
-32768 to
+32767
-32768 to
+32767
add the specified constant to content of
the BR register and load the byte in the
opened page addressed in this way into
ACCU-1-LL
1) 3)
add the specified constant to content of
the BR register and load the word in
the opened page addressed in this way
into ACCU-1-L
2) 3)
add the specified constant to content
of the BR register and load the double
word in the opened page addressed in
this way into ACCU 1
3)
Table 9-10 Operations for access to the pages organized in bytes
9
Operations with the Base Address Register (BR Register)
CPU 928B Programming Guide
C79000-B8576-C898-01
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