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Chapter 4: Configuring the Emulator
Configuring the Emulator Pod
To enable/disable response to target system
interrupts
• Answer "yes" to the "Respond to target system interrupts?" question to enable the
emulator's response; answer "no" to disable the emulator's response.
When enabled, the emulator responds to target system interrupts during foreground
operation. Target system interrupts are always ignored during background
operation.
All 68302 systems require a vector table to process system conditions such as
divide by zero or trace traps. You need to provide such a vector table to manage
these conditions. Exception processing attempted without a vector table will cause
unpredictable behavior.
To select the normal or dedicated interrupt mode
1 Answer "normal" or "dedicated" to the "Interrupt Mode?" question.
2 If you select the dedicated interrupt mode, answer "yes" or "no" to the "/IRQ7
mode = level?" question to specify whether interrupt 7 should be level or edge
sensitive.
In normal mode, the interrupt inputs to the processor are encoded on IPL2, IPL1,
and IPL0.
In dedicated mode, IPL2 becomes IRQ7, IPL1 becomes IRQ6, and IPL0 becomes
IRQ1.
Note
It is important to answer these questions so that they match what is programmed
into the GIMR register.
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