
7 DETAILS OF INSTRUCTIONS
S1C33 FAMILY C33 PE CORE MANUAL
EPSON
123
ld.w %rd, sign6
Function
Word data transfer
Standard) rd(5:0)
← sign6(5:0), rd(31:6) ← sign6(5)
Extension 1) rd(18:0)
← sign19(18:0), rd(31:19) ← sign19(18)
Extension 2) rd
← sign32
Code
15 12 11 10 9 4 3 0
0 1 1 0 1 1
sign6 r d
0x6C__
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Flag
IE C V Z N
– – – – –
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Mode
Src: Immediate data (signed)
Dst: Register direct
%rd = %r0 to %r15
CLK
One cycle
Description
(1) Standard
ld.w
%rd,sign6 ; rd ← sign6 (sign-extended)
The 6-bit immediate
sign6 is loaded to the rd register after being sign-extended.
(2) Extension 1
ext
imm13 ; = sign19(18:6)
ld.w
%rd,sign6 ; rd ← sign19 (sign-extended),
;
sign6 = sign19(5:0)
The immediate data is extended into a 19-bit quantity by the
ext instruction and it is loaded to
the rd register after being sign-extended.
(3) Extension 2
ext
imm13 ; = sign32(31:19)
ext
imm13 ; = sign32(18:6)
ld.w
%rd,sign6 ; rd ← sign32, sign6 = sign32(5:0)
The immediate data is extended into a 32-bit quantity by the
ext instruction and it is loaded to
the rd register.
(4) Delayed instruction
This instruction may be executed as a delayed instruction by writing it directly after a branch
instruction with the “d” bit. In this case, extension of the immediate by the ext instruction
cannot be performed.
Example
ld.w %r0,0x3f ; r0 ← 0xffffffff
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