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A.1 Convention
(a) Register symbols used to describe operands
Register Symbol
reg1
reg2
reg3
bit#3
immX
dispX
regID
vector
cccc
sp
ep
listX
(b) Register symbols used to describe opcodes
Register Symbol
R
r
w
d
I
i
cccc
CCCC
bbb
L
S
Appendix A
General registers: Used as source registers
General registers: Used mainly as destination registers. Also used as
source register in some instructions.
General registers: Used mainly to store the remainders of division
results and the higher order 3 bits of multiplication results.
33-bit data for specifying the bit number
X bit immediate data
X bit displacement data
System register number
5-bit data that specifies the trap vector (00H to 1FH)
4-bit data that shows the conditions code
Stack pointer (SP)
Element pointer (r30)
X item register list
1-bit data of a code that specifies reg1 or regID
1-bit data of the code that specifies reg2
1-bit data of the code that specifies reg3
1-bit displacement data
1-bit immediate data (indicates the higher bits of immediate data)
1-bit immediate data
4-bit data that shows the condition codes
4-bit data that shows the condition codes of Bcond instruction
3-bit data for specifying the bit number
1-bit data that specifies a program register in the register list
1-bit data that specifies a system register in the register list
Preliminary User's Manual U14913EE1V0UM00
Instruction Set List
Explanation
Explanation
585
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