Siemens CPU 948 Programming Manual page 402

Operations with the Base Address Register (BR Register)
Error reaction
9 - 32
Operation Operand
Table 9-11 continued:
TY CB -32768 to
+32767
TY CW -32768 to
+32767
TY CD -32768 to
+32767
1)
ACCU-1-LH and ACCU-1-H are set to '0'.
2)
ACCU-1-H is set to '0'.
3)
ACCU 2 : = ACCU 1
new old
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).
Description
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.
CPU 948 Programming Guide
C79000-G8576-C848-04