
7 DETAILS OF INSTRUCTIONS
100
EPSON
S1C33 FAMILY C33 PE CORE MANUAL
ld.c %rd, imm4
Function
Transfer data from the coprocessor
Standard) rd(7:0)
← W[CA(imm4)]
Extension 1) Unusable
Extension 2) Unusable
Code
15 12 11 8 7 4 3 0
1 0 1 1 0 0 0 1
imm4 r d
0xB1__
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Flag
IE C V Z N
– – – – –
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Mode
Src: Immediate (unsigned)
Dst: Register direct
%rd = %r0 to %r15
CLK
One cycle
Description
(1) Standard
The contents of the coprocessor register specified by
imm4 is transferred to the general-purpose
register rd
. imm4 is output to the dedicated coprocessor address bus.
(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
ld.c %r1,0x3 ; r1 ← coprocessor reg3
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