Technical data

Operation Operand Explanation
Table 9-10 continued:
TY CB
TY CW
TY CD
-32768 to
+32767
-32768 to
+32767
-32768 to
+32767
add the specified constant to content
of the BR register and transfer the
content of ACCU-1-LL to the byte
addressed in this way in the opened
page.
add the specified constant to content
of the BR register and transfer the
content of ACCU-1-L to the word
addressed in this way in the opened
page.
add the specified constant to content
of the BR register and transfer the
content of ACCU 1 to the double
word addressed in this way in the
opened page.
1)
ACCU-1-LH and ACCU-1-H are set to ’0’.
2)
ACCU-1-H is set to ’0’.
3)
ACCU 2
new
: = ACCU 1
old
Permissible address area The absolute address must be as follows:
•• for LY CB, TY CB: between F400H and FBFFH
•• for LY CW, TY CW: between F400H and FBFEH
•• for LY CD, TY CD: between F400H and FBFCH
Error reaction If the calculated byte address is not in the range shown, the CPU
recognizes a runtime error and calls
OB 31, providing it is loaded. If
OB 31 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).
Operations with the Base Address Register (BR Register)
CPU 928B Programming Guide
9 - 36 C79000-B8576-C898-01