Intel 80960KB User Manual

80960KB
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Figure 3. Instruction Formats
OpcodeDisplacement
OpcodeReg/LitRegMDisplacement
OpcodeRegReg/LitModesExt’d OpReg/Lit
OpcodeRegBaseMXOffset
OpcodeRegBaseModeScalexxOffset
Displacement
Control
Compare and
Branch
Register to
Register
Memory
Access—Short
Memory
Access—Long
1.1.1 Memory Space And Addressing Modes
The 80960KB offers a linear programming
environment so that all programs running on the
processor are contained in a single address space.
Maximum address space size is 4 Gigabytes (2
32
bytes).
For ease of use the 80960KB has a small number of
addressing modes, but includes all those necessary
to ensure efficient execution of high-level languages
such as C. Table 2 lists the modes.
1.1.2 Data Types
The 80960KB recognizes the following data types:
Numeric:
• 8-, 16-, 32- and 64-bit ordinals
• 8-, 16-, 32- and 64-bit integers
• 32-, 64- and 80-bit real numbers
Non-Numeric:
•Bit
• Bit Field
• Triple Word (96 bits)
• Quad-Word (128 bits)
1.1.3 Large Register Set
The 80960KB programming environment includes a
large number of registers. In fact, 32 registers are
available at any time. The availability of this many
registers greatly reduces the number of memory
accesses required to perform algorithms, which
leads to greater instruction processing speed.
There are two types of general-purpose registers:
local and global. The 20 global registers consist of
sixteen 32-bit registers (G0 though G15) and four
80-bit registers (FP0 through FP3). These registers
Table 2. Memory Addressing Modes
• 12-Bit Offset
• 32-Bit Offset
• Register-Indirect
• Register + 12-Bit Offset
• Register + 32-Bit Offset
• Register + (Index-Register x Scale-Factor)
• Register x Scale Factor + 32-Bit Displacement
• Register + (Index-Register x Scale-Factor) +
32-Bit Displacement
• Scale-Factor is 1, 2, 4, 8 or 16

Intel 80960KB Specifications

General

Brand	Intel
Model	80960KB
Category	Computer Hardware
Language	English

Summary

The 1960 Processor Architecture

80960KB Key Performance Features

Details the processor's high-speed execution, large register set, and efficient architecture.

Integrated Floating-Point Unit

Highlights the integrated FPU and support for IEEE 754 standard.

High Bandwidth Local Bus (L-Bus)

Describes the L-Bus features, including burst capability and bandwidth.

Built-in Testability Features

80960KB Electrical Specifications

Power and Grounding Connections

Power Decoupling Recommendations

Absolute Maximum Ratings

Specifies the absolute limits for voltage, temperature, and power dissipation.

DC Characteristics Parameters

Lists parameters like input/output voltages, leakage, and capacitance.

AC Specifications and Timing

Defines input and output timing specifications relative to CLK2.

AC Characteristics Tables

Provides detailed AC timing characteristics at different frequencies.

80960KB Mechanical Data and Packaging

80960KB Package Types

PGA and PQFP Pin Assignments

Details the pin assignments for both PGA and PQFP package types.

80960KB Pinout Details

Provides detailed pinout information in signal order for PGA and PQFP packages.

Package Thermal Specifications