Motorola CPU32 Manuale Utente Pagina 324

  • Scaricare
  • Aggiungi ai miei manuali
  • Stampa
  • Pagina
    / 646
  • Indice
  • SEGNALIBRI
  • Valutato. / 5. Basato su recensioni clienti
Vedere la pagina 323
Floating Point Instructions
5-22 M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL MOTOROLA
FATANH Hyperbolic Arc Tangent FATANH
(MC6888X, M68040FPSP)
Effective Address field—Determines the addressing mode for external operands.
If R/M = 0, this field is unused and should be all zeros.
If R/M = 1, this field is encoded with an M68000 family addressing mode as listed in
the following table:
*Only if < fmt > is byte, word, long, or single.
R/M field—Specifies the source operand address mode.
0 The operation is register to register.
1 The operation is < ea > to register.
Source Specifier field—Specifies the source register or data format.
If R/M = 0, specifies the source floating-point data register.
If R/M = 1, specifies the source data format:
000 Long-Word Integer (L)
001 Single-Precision Real (S)
010 Extended-Precision Real (X)
011 Packed-Decimal Real (P)
100 Word Integer (W)
101 Double-Precision Real (D)
110 Byte Integer (B)
Destination Register field—Specifies the destination floating- point data register. If R/
M = 0 and the source and destination fields are equal, then the input operand is
taken from the specified floating-point data register, and the result is then written
into the same register. If the single register syntax is used, Motorola assemblers
set the source and destination fields to the same value.
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 > 111 100
(An) + 011 reg. number:An
– (An) 100 reg. number:An
(d
16
,An) 101 reg. number:An (d
16
,PC) 111 010
(d
8
,An,Xn) 110 reg. number:An (d
8
,PC,Xn) 111 011
(bd,An,Xn) 110 reg. number:An (bd,PC,Xn) 111 011
([bd,An,Xn],od) 110 reg. number:An ([bd,PC,Xn],od) 111 011
([bd,An],Xn,od) 110 reg. number:An ([bd,PC],Xn,od) 111 011
Vedere la pagina 323
1 2 ... 319 320 321 322 323 324 325 326 327 328 329 ... 645 646

Commenti su questo manuale

Nessun commento