6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-10-01 13:58:20 +00:00
Code Issues Projects Releases Wiki Activity

Applies indirect page zero emulation mode addressing constraint to ix addressing.

Browse Source 
Lorenz's LDA tests now pass in emulation mode.
This commit is contained in:
Thomas Harte 2020-10-09 23:22:48 -04:00
parent 92e72959c3
commit 290598429a
2 changed files with 9 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
OSBindings/Mac/Clock SignalTests/WolfgangLorenzTests.swift
View File

@ -256,6 +256,11 @@ class WolfgangLorenzTests: XCTestCase, CSTestMachineTrapHandler {
machine.setValue(0x0801, for: .programCounter) machine.setValue(0x0801, for: .programCounter)
machine.setValue(0xfd, for: .stackPointer) machine.setValue(0xfd, for: .stackPointer)
machine.setValue(0x04, for: .flags) machine.setValue(0x04, for: .flags)
// For consistency when debugging; otherwise immaterial.
machine.setValue(0x00, for: .A)
machine.setValue(0x00, for: .X)
machine.setValue(0x00, for: .Y)
} }
} }

5
Processors/65816/Implementation/65816Implementation.hpp
View File

@ -249,7 +249,10 @@ template <typename BusHandler> void Processor<BusHandler>::run_for(const Cycles
continue; continue;
case OperationConstructDirectIndexedIndirect: case OperationConstructDirectIndexedIndirect:
data_address_ = data_bank_ + (direct_ + x() + instruction_buffer_.value) & 0xffff; data_address_ = data_bank_ + (
((direct_ + x() + instruction_buffer_.value) & e_masks_[1]) +
(direct_ & e_masks_[0])
) & 0xffff;
if(!(direct_&0xff)) { if(!(direct_&0xff)) {
++next_op_; ++next_op_;
} }