Fujitsu MB90895 Series Hardware Manual page 657

Table A.7-1 Description of Items in the Instruction List (2/2)
Item
Indicates whether the instruction is a Read Modify Write instruction (reading
data from memory by the I instruction and writing the result to memory).
*:Read Modify Write instruction
−
RMW
Note:
Table A.7-2 Explanation on Symbols in the Instruction List (1/2)
Representation
32 bits accumulator
The bit length used varies depending on each instruction.
A Byte: Low-order 8 bits of byte AL
Word: 16 bits of word AL
Long word: 32 bits of AL and AH
AH 16 high-order bits of A
AL 16 low-order bits of A
SP Stack pointer (USP or SSP)
PC Program counter
PCB Program bank register
DTB Data bank register
ADB Additional data bank register
SSB System stack bank register
USB User stack bank register
SPB Current stack bank register (SSB or USB)
DPR Direct page register
brg1 DTB, ADB, SSB, USB, DPR, PCB, SPB
brg2 DTB, ADB, SSB, USB, DPR, SPB
Ri R0, R1, R2, R3, R4, R5, R6, R7
RWi RW0, RW1, RW2, RW3, RW4, RW5, RW6, RW7
RWj RW0, RW1, RW2, RW3
RLi RL0, RL1, RL2, RL3
dir Abbreviated direct addressing
addr16 Direct addressing
addr24 Physical direct addressing
ad24 0 to 15 Bits 0 to 15 of addr24
ad24 16 to 23 Bits 16 to 23 of addr24
io I/O area (000000
: Not Read Modify Write instruction
Cannot be used for an address that has different meanings between read
and write operations.
to 0000FF
H H
APPENDIX A Instructions
Description
Explanation
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