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Implements XBA and XCE.

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This commit is contained in:
Thomas Harte 2020-10-10 21:34:22 -04:00
parent ae87728770
commit aface1f8be
1 changed files with 12 additions and 1 deletions
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13
Processors/65816/Implementation/65816Implementation.hpp
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@ -491,6 +491,12 @@ template <typename BusHandler> void Processor<BusHandler>::run_for(const Cycles
flags_.set_nz(a_.full, m_shift_);
break;
case XBA: {
const uint8_t a_low = a_.halves.low;
a_.halves.low = a_.halves.high;
a_.halves.high = a_low;
flags_.set_nz(a_.halves.low);
} break;
//
// Jumps and returns.
@ -573,6 +579,12 @@ template <typename BusHandler> void Processor<BusHandler>::run_for(const Cycles
set_flags(get_flags() | instruction_buffer_.value);
break;
case XCE: {
const bool old_emulation_flag = emulation_flag_;
set_emulation_mode(flags_.carry);
flags_.carry = old_emulation_flag;
} break;
//
// Increments and decrements.
//
@ -779,7 +791,6 @@ template <typename BusHandler> void Processor<BusHandler>::run_for(const Cycles
// TODO:
// TRB, TSB,
// XCE, XBA,
// STP, WAI,
// RTL,
// TCD, TCS, TDC, TSC