FSCALE Scale Exponent FSCALE
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, FPm.
If R/M = 1, specifies the source data format:
000 L Long Word Integer
001 S Single Precision Real
010 X Extended Precision Real
011 P Packed Decimal Real
100 W Word Integer
101 D Double Precision Real
110 B Byte Integer
Destination Register Field w Specifies the destination floating-point data register, FPn.
MC68881/MC68882 USER'S MANUAL FREESCALE
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