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Integer Instructions
BFINS
Insert Bit Field
(MC68020, MC68030, MC68040)
BFINS
Width field—Specifies the field width, depending on Dw.
If Dw = 0, the width field is an immediate operand; operand values in the range of 1
– 31 specify a field width of 1 – 31, and a value of zero specifies a width of 32.
If Dw = 1, the width field specifies a data register that contains the width. The value
is modulo 32; values of 1 – 31 specify field widths of 1 – 31, and a value of zero
specifies a width of 32.
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M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
MOTOROLA