-------------------------------------------------------------HD614P080S
(a)
Address Designation
:lfROS=l
:
If
RO
g
= 1
(b) Pattern
Output
Fig.22
P Instruction
•
P Instruction (Pattern Instruction)
By
P instruction, the
ROM
data determined by Table Data
addressing
is
referred. When bit 8 in referred
ROM
data
is
"1
",8
bits
of
referred
ROM
data are written into the accumu-
Fig.
23
The
Branch Destination by
BR
Instruction
on
the Boundary between Pages
lator and B Register. When bit 9 is "1", 8 bits
of
referred
ROM
data are written into the
Rl
and R2 port
output
register. When
both bit 8 and 9 are "1
",
ROM
data are written
into
the acc-
umulator and B register and also
to
the
Rl
and R2 port
output
register at a same time.
The P instruction has no effect on the program counter.
• INSTRUCTION SET
The HMCS400 series provide 99 instructions. These instruc-
tions are classified into 10 groups
as
follows;
(I)
Immediate Instruction
(2) Register-to-Register Instruction
(3)
RAM
Address Instruction
(4)
RAM
Register Instruction
(5) Arithmetic Instruction
(6) Compare Instruction
(7)
RAM
Bit Manipulation Instruction
(8)
ROM
Address Instruction
(9) Input/Output Instruction
(10) Control Instruction
285
To Next Page
