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If bit 9 of MMR0 is not set, abort an instruction but do not trap

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folkert van heusden 2023-03-21 11:04:04 +01:00
parent 49d16a72e6
commit 470919e85d
Signed by untrusted user who does not match committer: folkert
GPG key ID: 6B6455EDFEED3BD1
1 changed files with 3 additions and 2 deletions
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5
bus.cpp
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@ -415,7 +415,7 @@ uint32_t bus::calculate_physical_address(const int run_mode, const uint16_t a, c
m_offset &= 0x3ffff; m_offset &= 0x3ffff;
if (trap_on_failure) { if (trap_on_failure) {
if (MMR0 & (1 << 9)) { {
const int access_control = pages[run_mode][d][apf].pdr & 7; const int access_control = pages[run_mode][d][apf].pdr & 7;
bool do_trap = false; bool do_trap = false;
@ -431,7 +431,8 @@ uint32_t bus::calculate_physical_address(const int run_mode, const uint16_t a, c
if (do_trap) { if (do_trap) {
DOLOG(debug, true, "TRAP(0250) (throw 1) for access_control %d on address %06o", access_control, a); DOLOG(debug, true, "TRAP(0250) (throw 1) for access_control %d on address %06o", access_control, a);
c->schedule_trap(0250); // invalid address if (MMR0 & (1 << 9))
c->schedule_trap(0250); // invalid address
if (is_write) if (is_write)
pages[run_mode][d][apf].pdr |= 1 << 7; pages[run_mode][d][apf].pdr |= 1 << 7;