Technical data

Operations with the Base Address Register (BR Register)
9.4.1
Operations for Transfer
between Registers
Application You can use the operations described in this section for the fast
exchange of values between the restisters ACCU 1, STEP address
counter (SAC) and base address register (BR).
Operations
Operation Operand Explanation
MAS
MAB
MSA
MSB
MBA
MBS
—
—
—
—
—
—
Transfer the contents of ACCU 1 (bit 2
0
to 2
14
) to the SAC register (STEP
address counter)
Transfer the contents of ACCU 1 (bits
2
0
to 2
31
) to the BR register (base
address register)
Transfer the contents of the STEP
address counter (SAC register) to
ACCU 1
1)
Transfer the contents of the SAC
register (STEP address counter) to the
BR register (base address register)
1)
Transfer the contents of the BR register
(base address register) to ACCU 1
Transfer the contents of the BR register
(bits 2
0
to 2
14
, base address register) to
the SAC register (STEP address
counter)
1)
Bits 2
15
to 2
31
are set to "0"
The following figure illustrates how the registers are changed by the
operations.
Table 9-6 Operations for transfer between registers
9
Operations with the Base Address Register (BR Register)
CPU 928B Programming Guide
C79000-B8576-C898-01
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