MC68030FE20C Freescale Semiconductor, MC68030FE20C Datasheet - Page 43

• Manufacturer Part Number: MC68030FE20C
• Description: IC MPU 32BIT ENHANCED 132-CQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68030FE20C

• Processor Type: M680x0 32-Bit
• Speed: 20MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 132-CQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

1.6.2 Virtual Machine
1-14
cpBcc
cpDBcc
cpGEN
Mnemonic
the supervisor privilege level and any attempt by the new operating system
to access supervisor resources or execute privileged instructions causes a
trap to the governing operating system.
A typical use for a virtual machine system is the development of software,
such as an operating system, for a new machine also under development
governing operating system emulates the hardware of the new machine and
allows the new software to be executed and debugged as though it were
governing operating system, it is executed at a lower privilege level than the
governing operating system. Thus, any attempts by the new software to use
virtual resources that are not physically present (and should be emulated)
are trapped to the governing operating system and performed by its software.
vice are simulated in the memory map. An access to a virtual register causes
a fault and the function of the register is emulated by software.
and not yet available for programming use. In a virtual machine system, a
running on the new hardware. Since the new software is controlled by the
In the MC68030 implementation of a virtual machine, the virtual application
runs at the user privilege level. The governing operating system executes at
Instruction continuation is used to support virtual I/0 devices in memory-
mapped input/output systems. Control and data registers for the virtual de-
Test Coprocessor Condition,
Branch Conditionally
Coprocessor General Instruction
Decrement and Branch
Description
Coprocessor Instructions
MC68030 USER'S MANUAL
cpRESTORE Restore Internal State of Coprocessor
cpSAVE
cpScc
cpTRAPcc
Mnemonic
Save Internal State of Coprocessor
Set Conditionally
Trap Conditionally
Description
MOTOROLA