Table of Contents
Advertisement
Chapter 4: Configuring the Emulator
Configuring the Emulator Pod
To enable/disable bus arbitration
• Answer "yes" to the "Enable bus arbitration?" question to enable target system bus
arbitration; answer "no" to disable the target bus arbitration.
Enabling and disabling bus master arbitration can be useful for isolating target
system problems. For example, you may have a situation where the processor
never seems to execute any code. You can disable bus arbitration to see if faulty
arbitration circuitry in your target system is contributing to the problem.
When bus arbitration is enabled:
When bus arbitration is disabled:
128
The emulator responds to the /BR (bus request) and /BGACK (bus grant
acknowledge) signals from the target system just like the microprocessor.
The emulator does not support DMA (direct memory access) to emulation
memory. Internal 68302 DMA can happen regardless of the answer to this
question. The /BGACK signal will always be active on internal DMA
operations.
The emulator ignores the /BR and /BGACK signals from the target system.
Advertisement
Table of Contents
