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7 DETAILS OF INSTRUCTIONS
sub %sp, imm10
Function
Subtraction
Standard)
Extension 1) Unusable
Extension 2) Unusable
15
Code
1
0
0
|
|
IE
C
V
Flag
|
|
–
–
–
Mode
Src:Immediate data (unsigned)
Dst:Register direct (SP)
CLK
One cycle
Description
(1) Standard
Quadruples the 10-bit immediate imm10 and subtracts it from the stack pointer SP. The imm10
is zero-extended into 32 bits prior to the operation.
(2) Delayed instruction
This instruction may be executed as a delayed instruction by writing it directly after a branch
instruction with the "d" bit.
Example
sub
%sp,0x100
164
sp ← sp - imm10 × 4
12 11 10
9
|
|
0
0
1
|
|
|
|
|
Z
N
|
|
–
–
; sp = sp - 0x400
0
imm10
|
|
|
|
|
|
EPSON
0x84__
S1C33 FAMILY C33 PE CORE MANUAL
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