Floating Point Support

Floating Point Support

The floating point unit (FPU) of the MC68040 microprocessor chip is supported in 166Bug. For MVME166Bug, the commands MD, MM, RM, and 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:

4

Integer Data Types

12Byte

1234Word

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

Scientific Notation Format (decimal)

When entering data in single, double, extended precision, or packed decimal format, the following rules must be observed:

1.The sign field is the first field and is a binary field.

2.The exponent field is the second field and is a hexadecimal field.

3.The mantissa field is the last field and is a hexadecimal field.

4.The sign field, the exponent field, and at least the first digit of the mantissa field must be present (any unspecified digits in the mantissa field are set to zero).

5.Each field must be separated from adjacent fields by an underscore.

6.All the digit positions in the sign and exponent fields must be present.

MVME166IG/D2

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Motorola MVME166IG/D2 manual Floating Point Support, Floating Point Data Types
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MVME166IG/D2 specifications

The Motorola MVME166IG/D2 is a pioneering embedded computer designed for high-performance applications in industrial and telecom sectors. This versatile computing platform is based on the PowerPC architecture, which ensures efficient processing capabilities and transfer of data, making it suitable for a wide range of applications, including real-time control, data acquisition, and system monitoring.

One of the main features of the MVME166IG/D2 is its powerful processor. The system is equipped with a PowerPC 603e processor, which offers a remarkable performance rate with a clock speed of up to 250 MHz. This high-speed processing capability allows for rapid data handling and processing, which is critical for demanding applications in real-time environments.

The MVME166IG/D2 also stands out due to its modular design. It supports multiple expansion slots that make it adaptable for different user needs. The system can accommodate additional cards or memory modules, allowing for increased versatility and capability in various operational scenarios.

In terms of connectivity, this embedded computer includes multiple communication interfaces such as Ethernet and serial ports, which facilitate seamless data transfer and communication within larger systems. This connectivity is crucial for integrating the device into existing industrial networks or for connecting with sensors and other equipment.

Another noteworthy characteristic of the MVME166IG/D2 is its robust build quality, which is essential for operation in challenging environments. The device is designed to endure high levels of shock and vibration, making it suitable for deployment in applications such as transportation or heavy machinery.

Additionally, the MVME166IG/D2 offers a range of software support which includes various real-time operating systems. This compatibility allows developers to choose the OS that best fits their application's requirements, enhancing the overall utility of the system.

In summary, the Motorola MVME166IG/D2 is a powerful, flexible embedded computing solution that excels in performance, modularity, and reliability. Its advanced features and durable design make it an ideal choice for industries that require precision, speed, and robustness in their computing solutions.
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