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Set an initial A20 state.

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This commit is contained in:
Thomas Harte 2025-03-26 07:35:17 -04:00
parent 8b1543d9c9
commit b34702e370
1 changed files with 4 additions and 0 deletions
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4
Machines/PCCompatible/LinearMemory.hpp
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@ -211,6 +211,10 @@ struct LinearMemory<model, std::enable_if_t<model <= InstructionSet::x86::Model:
template <>
struct LinearMemory<InstructionSet::x86::Model::i80286>: public LinearPool<1 << 24> {
LinearMemory() {
set_a20_enabled(false);
}
// A20 is the only thing that can cause split accesses on an 80286.
void set_a20_enabled(const bool enabled) {
address_mask_ = uint32_t(~0);