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Fix interrupt request address.

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This commit is contained in:
Thomas Harte 2022-05-26 20:20:28 -04:00
parent c97245e626
commit 67b340fa5e
1 changed files with 3 additions and 1 deletions
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4
Processors/68000Mk2/Implementation/68000Mk2Implementation.hpp
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@ -531,7 +531,7 @@ void Processor<BusHandler, dtack_is_implicit, permit_overrun, signal_will_perfor
Access(captured_status_); // ns Access(captured_status_); // ns
// Do the interrupt cycle, to obtain a vector. // Do the interrupt cycle, to obtain a vector.
temporary_address_.l = 0xffff'fff8 | uint32_t(captured_interrupt_level_); temporary_address_.l = 0xffff'fff1 | uint32_t(captured_interrupt_level_ << 1);
SetupDataAccess(0, Microcycle::InterruptAcknowledge); SetupDataAccess(0, Microcycle::InterruptAcknowledge);
SetDataAddress(temporary_address_.l); SetDataAddress(temporary_address_.l);
Access(temporary_value_.low); // ni Access(temporary_value_.low); // ni
@ -541,6 +541,8 @@ void Processor<BusHandler, dtack_is_implicit, permit_overrun, signal_will_perfor
temporary_value_.w = uint16_t(InstructionSet::M68k::Exception::InterruptAutovectorBase - 1 + captured_interrupt_level_); temporary_value_.w = uint16_t(InstructionSet::M68k::Exception::InterruptAutovectorBase - 1 + captured_interrupt_level_);
} }
// TODO: if bus error is set, treat interrupt as spurious.
IdleBus(3); // n- n IdleBus(3); // n- n
// Do the rest of the stack work. // Do the rest of the stack work.