16-bit Proprietary F2MC-16L Family Addressing and Super-accumulator

■Main Addressing Modes (can be used by transfer and arithmetic instructions)

•Bit addressing

Direct bit: I/O area (2 Kbits) + area inside DPR page (2 Kbits) Any bit within 64 Kbytes may be specified.

•Indirect addressing

@RWi, @RWi+, @RWi+disp16, @RLi+disp8, @RWj+disp8 (i = 0 to 3), (j = 0 to 7) @RW0+RW7

@RW1+RW7

@PC+disp16

@A

•Direct addressing

R0 to R7, RW0 to RW7, RL0 to RL3 dir, addr16, io, addr24

F2MC-16L Family

■Super Accumulator

•32-bit accumulator using AH:AL (16 bits:16 bits) as a pair.

•Data precision verification function

F8

 

For example, MOV instruction

 

 

F8

 

 

 

 

 

 

 

 

MOVX instruction

 

 

 

00F8

 

Zero extension

FFF8

 

Sign extension

 

 

 

 

• Data keep function (available for data types of 16-bit word length and less)

AH

AL

X

 

a

 

 

 

 

 

↓

 

MOV A,#b

 

 

 

 

a

 

b

 

 

 

 

 

↓

 

ADDW A

 

 

 

 

a

 

a+b

 

 

 

 

 

85