Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Instrukcja Użytkownika Strona 131

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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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