user manual

Debugger General Information

B-44

Floating Point Support

The floating point unit (FPU) of the MC68060 microprocessor chip

is supported in 177Bug. For MVME177Bug, the commands:

❏ MD

❏ MM

❏ RM

❏ RS

have been extended to allow display and modification of floating

point data in registers and in memory. Floating point instructions

can be assembled/disassembled with the DI option of the MD and

MM commands.

Valid data types that can be used when modifying a floating point

data register or a floating point memory location:

Integer Data Types

12 Byte

1234 Word

12345678 Longword

Floating Point Data Types

1_FF_7FFFFF Single Precision Real Format

1_7FF_FFFFFFFFFFFFF Double Precision Real Format

1_7FFF_FFFFFFFFFFFFFFFF Extended Precision Real Format

1111_2103_123456789ABCDEF01 Packed Decimal Real Format

-3.12345678901234501_E+123 ScientiÞc Notation Format (decimal)