1989_MELPS_7700_Software_Manual

TOB
Transfer Direct Page Register to Accumulator B
TOB
Operation
If m=O,
BL f- DPRL
BH f- DPAH
If m=1,
BL f- DPAL
Description
Loads the accumulator B with the contents of the direct page register DPA. The
contents of the direct page register DPA are not changed.
Status flags
IPL:
N
v
m
x
D
I
Z
C
Not affected.
Set to 1 when bit 15 (or bit 7 if the data length selection flag m is set to 1) of
the operation result is 1. Otherwise, cleared to O.
Not affected.
Not affected.
Not affected.
Not affected.
Not affected.
Set to 1 when the result of operation is O. Otherwise, cleared to O.
Not affected.
Addressing mode Syntax Machine code I Bytes Cycles
Implied TOB 4216, 7B16 I 2 4
152