NEC V850E/MA1 User Manual page 551

B.1 Convention
(1) Register symbols used to describe operands
Register Symbol
reg1 General-purpose register:
reg2 General-purpose register:
reg3 General-purpose register:
bit#3 3-bit data for specifying the bit number
immX X bit immediate data
dispX X bit displacement data
regID System register number
vector 5-bit data that specifies the trap vector (00H to 1FH)
cccc 4-bit data that shows the conditions code
sp Stack pointer (r3)
ep Element pointer (r30)
listX X item register list
(2) Register symbols used to describe opcodes
Register Symbol
R 1-bit data of a code that specifies reg1 or regID
r 1-bit data of the code that specifies reg2
w 1-bit data of the code that specifies reg3
d 1-bit displacement data
I 1-bit immediate data (indicates the higher bits of immediate data)
i 1-bit immediate data
cccc 4-bit data that shows the condition codes
CCCC 4-bit data that shows the condition codes of Bcond instruction
bbb 3-bit data for specifying the bit number
L 1-bit data that specifies a program register in the register list
S 1-bit data that specifies a system register in the register list
APPENDIX B INSTRUCTION SET LIST
Used as source register.
Used mainly as destination register. Also used as source register in some
instructions.
Used mainly to store the remainders of division results and the higher 3 bits of
multiplication results.
User's Manual U14359EJ4V0UM
Explanation
Explanation
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