4513_03 Datasheet, PDF (86/210 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCOMPUTER

HARDWARE
MACHINE INSTRUCTIONS
Skip condition
Datailed description
Continuous
description
–
– Loads the value n in the immediate field to register A.
When the LA instructions are continuously coded and executed, only the first LA instruction is executed and
other LA instructions coded continuously are skipped.
– Transfers bits 7 to 4 to register B and bits 3 to 0 to register A. These bits 7 to 0 are the ROM pattern in ad-
dress (DR2 DR1 DR0 A3 A2 A1 A0)2 specified by registers A and D in page p.
When this instruction is executed, 1 stage of stack register is used.
–
– Adds the contents of M(DP) to register A. Stores the result in register A. The contents of carry flag CY re-
mains unchanged.
–
0/1 Adds the contents of M(DP) and carry flag CY to register A. Stores the result in register A and carry flag CY.
Overflow = 0
–
–
–
–
(CY) = 0
–
–
– Adds the value n in the immediate field to register A.
The contents of carry flag CY remains unchanged.
Skips the next instruction when there is no overflow as the result of operation.
– Takes the AND operation between the contents of register A and the contents of M(DP), and stores the re-
sult in register A.
– Takes the OR operation between the contents of register A and the contents of M(DP), and stores the result
in register A.
1 Sets (1) to carry flag CY.
0 Clears (0) to carry flag CY.
– Skips the next instruction when the contents of carry flag CY is “0.”
– Stores the one’s complement for register A’s contents in register A.
0/1 Rotates 1 bit of the contents of register A including the contents of carry flag CY to the right.
–
– Sets (1) the contents of bit j (bit specified by the value j in the immediate field) of M(DP).
–
– Clears (0) the contents of bit j (bit specified by the value j in the immediate field) of M(DP).
(Mj(DP)) = 0
j = 0 to 3
(A) = (M(DP))
(A) = n
– Skips the next instruction when the contents of bit j (bit specified by the value j in the immediate field) of
M(DP) is “0.”
– Skips the next instruction when the contents of register A is equal to the contents of M(DP).
– Skips the next instruction when the contents of register A is equal to the value n in the immediate field.
4513/4514 Group User’s Manual
1-73