Motorola CPU32 User's Guide download pdf (Page 81)

80 CPU32 Emulation

Chapter 5: Connecting and Configuring the Emulator

Configuring the Emulator

will allow display and modification from the user interface. For

example, when 68332 is selected as the processor type, the interface

will support direct access to the SIM, the QSM, the TPU, and the

TPURAM registers.

The emulator does not have explicit support for all CPU32 processors.

When using a member of the CPU32 family that is not explicitly

supported it may be possible to select a processor that is a formal

subset of the unsupported processor. This will provide direct access to

all of the internal memory mapped registers that are common. Since

the registers in the internal modules are memory mapped, registers in

unsupported CPU32 processors are also accessible through the

memory commands. For example, on a 68332, SIM registers can be

accessed at memory locations 7FFA00 to 7FFA7F or FFFA00 to

FFFA7F.

To configure the processor clock speed (BDM

communication speed)

The maximum communication rate with the target processor through

the BDM port is based upon the target processor type and the target

processor clock speed.

For best performance, set the processor clock speed to the highest

speed that is equal to or less than the clock speed of the target

processor. You may set the processor clock speed to a speed lower than

the actual clock speed of your target system. Use the 25 MHz option for

microcontrollers running faster than 25 MHz.

If using the internal clock synthesizer, set the EMSYNCR (EMulator

copy of the SYNthesizer Control Register, SYNCR) to the same value as

set by the initialization code. See Chapter 6, “Using Internal Registers

(SIM and EMSIM Registers),” beginning on page 89.

1 2 ... 76 77 78 79 80 81 82 83 84 85 86 ... 204 205

No comments

Motorola CPU32 User's Guide Page 81