Motorola CPU32 Bedienungsanleitung Seite 380

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Floating Point Instructions
5-78 M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL MOTOROLA
FMOVE Move Floating-Point Data Register FMOVE
(MC6888X, MC68040)
Instruction Format:
REGISTER—TO-MEMORY
Instruction Fields:
Effective Address field—Specifies the destination location. Only data alterable
addressing modes can be used as listed in the following table:
*Only if < fmt > is byte, word, long, or single.
Destination Format field—Specifies the data format of the destination operand:
000 Long-Word Integer (L)
001 Single-Precision Real (S)
010 Extended-Precision Real (X)
011 Packed-Decimal Real with Static k-Factor (P{#k})*
100 Word Integer (W)
101 Double-Precision Real (D)
110 Byte Integer (B)
111 Packed-Decimal Real with Dynamic k-Factor (P{Dn})*
*This encoding will cause an unimplemented data type exception in the
MC68040 to allow emulation in software.
1514131211109876543210
111
COPROCESSOR
ID
1000
EFFECTIVE ADDRESS
MODE REGISTER
011
DESTINATION
FORMAT
SOURCE
REGISTER
K-FACTOR
(IF REQUIRED)
Addressing Mode Mode Register Addressing Mode Mode Register
Dn* 000 reg. number:Dn (xxx).W 111 000
An (xxx).L 111 001
(An) 010 reg. number:An # < data >
(An) + 011 reg. number:An
– (An) 100 reg. number:An
(d
16
,An) 101 reg. number:An (d
16
,PC)
(d
8
,An,Xn) 110 reg. number:An (d
8
,PC,Xn)
(bd,An,Xn) 110 reg. number:An (bd,PC,Xn)
([bd,An,Xn],od) 110 reg. number:An ([bd,PC,Xn],od)
([bd,An],Xn,od) 110 reg. number:An ([bd,PC],Xn,od)
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