Siemens CPU 948 - Page 402

Operation Operand Description
Table 9-11 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 open 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 open
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 open
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
Error reaction The range of absolute addresses must be
•• between F F400H and F FBFFH (LY CB, TY CB),
•• between F F400H and F FBFEH (LY CW, TY CW)
or
•• between F F400H and F FBFCH (LY CD, TY CD).
If the absolute addresses are not in the range shown, the CPU detects a
load/transfer error (TRAF) and calls OB 32. If OB 32 is not loaded,
the CPU changes to the STOP mode with the error bit TRAF
(ISTACK).
Operations with the Base Address Register (BR Register)
CPU 948 Programming Guide
9 - 32 C79000-G8576-C848-04