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https://github.com/freewilll/apple2-go.git
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d89c7babf0
This required moving some common things in a new package to resolve a circular dependency between cpu <=> mmu.
28 lines
579 B
Go
28 lines
579 B
Go
package system
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var (
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PendingInterrupt bool
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PendingNMI bool
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RunningTests bool
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RunningFunctionalTests bool
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RunningInterruptTests bool
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)
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// Handle a write to a magic test address that triggers an interrupt and/or an NMI
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func WriteInterruptTestOpenCollector(address uint16, oldValue uint8, value uint8) {
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oldInterrupt := (oldValue & 0x1) == 0x1
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oldNMI := (oldValue & 0x2) == 0x2
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interrupt := (value & 0x1) == 0x1
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NMI := (value & 0x2) == 0x2
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if oldInterrupt != interrupt {
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PendingInterrupt = interrupt
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}
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if oldNMI != NMI {
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PendingNMI = NMI
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}
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}
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