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MMR0 fix

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folkert van heusden 2022-06-17 19:57:17 +02:00
parent d101ab3088
commit 60b513033f
1 changed files with 4 additions and 2 deletions
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6
bus.cpp
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@ -525,10 +525,12 @@ uint16_t bus::write(const uint16_t a, const bool word_mode, uint16_t value, cons
if (a == 0177572) { // MMR0 if (a == 0177572) { // MMR0
DOLOG(debug, true, "write set MMR0: %o", value); DOLOG(debug, true, "write set MMR0: %o", value);
MMR0 = value & ~(3 << 10); // bit 10 & 11 always read as 0 value &= ~(3 << 10); // bit 10 & 11 always read as 0
if (value & 1) if (value & 1)
MMR0 = value & ~(7 << 13); // reset error bits value &= ~(7 << 13); // reset error bits
MMR0 = value;
return MMR0; return MMR0;
} }