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Advances to IO.
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Thomas Harte
parent
b42780173a
commit
06f1e64177
@ -16,6 +16,7 @@ static constexpr uint16_t initial_pc = 0x0000;
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static constexpr uint16_t initial_ir = 0xe000;
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static constexpr uint16_t initial_bc_de_hl = 0xabcd;
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static constexpr uint16_t initial_ix_iy = 0x3412;
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static constexpr uint16_t initial_sp = 0x6800;
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struct CapturingZ80: public CPU::Z80::BusHandler {
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@ -29,6 +30,13 @@ struct CapturingZ80: public CPU::Z80::BusHandler {
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run_for(3);
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bus_records_.clear();
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// Set the flags so that if this is a conditional operation, it'll succeed.
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if((*code.begin())&0x8) {
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z80_.set_value_of_register(CPU::Z80::Register::Flags, 0xff);
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} else {
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z80_.set_value_of_register(CPU::Z80::Register::Flags, 0x00);
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}
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// Set the refresh address to the EE page and set A to 0x80.
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z80_.set_value_of_register(CPU::Z80::Register::I, 0xe0);
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z80_.set_value_of_register(CPU::Z80::Register::A, 0x80);
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@ -41,6 +49,9 @@ struct CapturingZ80: public CPU::Z80::BusHandler {
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// Set IX and IY.
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z80_.set_value_of_register(CPU::Z80::Register::IX, initial_ix_iy);
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z80_.set_value_of_register(CPU::Z80::Register::IY, initial_ix_iy);
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// Set SP.
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z80_.set_value_of_register(CPU::Z80::Register::StackPointer, initial_sp);
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}
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void run_for(int cycles) {
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@ -910,4 +921,214 @@ struct ContentionCheck {
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} z80:z80];
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}
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}
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- (void)testPOPddRET {
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for(uint8_t opcode : {
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// POP dd
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0xc1, 0xd1, 0xe1, 0xf1,
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// RET
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0xc9,
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}) {
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const std::initializer_list<uint8_t> opcodes = {opcode};
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CapturingZ80 z80(opcodes);
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z80.run_for(10);
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[self validate48Contention:{
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{initial_pc, 4},
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{initial_sp, 3},
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{initial_sp+1, 3},
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} z80:z80];
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[self validatePlus3Contention:{
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{initial_pc, 4},
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{initial_sp, 3},
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{initial_sp+1, 3},
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} z80:z80];
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}
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}
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- (void)testRETIN {
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for(const auto &sequence : std::vector<std::vector<uint8_t>>{
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// RETN
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{0xed, 0x45}, {0xed, 0x55}, {0xed, 0x5d},
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{0xed, 0x65}, {0xed, 0x6d}, {0xed, 0x75}, {0xed, 0x7d},
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{0xed, 0x4d}, // RETI
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}) {
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CapturingZ80 z80(sequence);
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z80.run_for(14);
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[self validate48Contention:{
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{initial_pc, 4},
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{initial_pc+1, 4},
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{initial_sp, 3},
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{initial_sp+1, 3},
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} z80:z80];
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[self validatePlus3Contention:{
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{initial_pc, 4},
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{initial_pc+1, 4},
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{initial_sp, 3},
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{initial_sp+1, 3},
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} z80:z80];
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}
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}
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- (void)testRETcc {
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for(uint8_t opcode : {
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0xc0, 0xc8, 0xd0, 0xd8,
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0xe0, 0xe8, 0xf0, 0xf8,
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}) {
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const std::initializer_list<uint8_t> opcodes = {opcode};
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CapturingZ80 z80(opcodes);
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z80.run_for(11);
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[self validate48Contention:{
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{initial_pc, 4},
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{initial_ir, 1},
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{initial_sp, 3},
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{initial_sp+1, 3},
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} z80:z80];
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[self validatePlus3Contention:{
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{initial_pc, 5},
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{initial_sp, 3},
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{initial_sp+1, 3},
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} z80:z80];
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}
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}
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- (void)testPUSHRST {
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for(uint8_t opcode : {
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// PUSH dd
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0xc5, 0xd5, 0xe5, 0xf5,
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// RST x
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0xc7, 0xcf, 0xd7, 0xdf, 0xe7, 0xef, 0xf7, 0xff,
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}) {
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const std::initializer_list<uint8_t> opcodes = {opcode};
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CapturingZ80 z80(opcodes);
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z80.run_for(11);
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[self validate48Contention:{
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{initial_pc, 4},
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{initial_ir, 1},
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{initial_sp-1, 3},
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{initial_sp-2, 3},
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} z80:z80];
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[self validatePlus3Contention:{
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{initial_pc, 5},
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{initial_sp-1, 3},
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{initial_sp-2, 3},
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} z80:z80];
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}
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}
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- (void)testCALL {
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for(const auto &sequence : std::vector<std::vector<uint8_t>>{
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// CALL cc
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{0xc4, 0x00, 0x00}, {0xcc, 0x00, 0x00},
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{0xd4, 0x00, 0x00}, {0xdc, 0x00, 0x00},
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{0xe4, 0x00, 0x00}, {0xec, 0x00, 0x00},
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{0xf4, 0x00, 0x00}, {0xfc, 0x00, 0x00},
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{0xcd, 0x00, 0x00}, // CALL
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}) {
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CapturingZ80 z80(sequence);
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z80.run_for(17);
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[self validate48Contention:{
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{initial_pc, 4},
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{initial_pc+1, 3},
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{initial_pc+2, 3},
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{initial_pc+2, 1},
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{initial_sp-1, 3},
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{initial_sp-2, 3},
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} z80:z80];
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[self validatePlus3Contention:{
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{initial_pc, 4},
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{initial_pc+1, 3},
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{initial_pc+2, 4},
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{initial_sp-1, 3},
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{initial_sp-2, 3},
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} z80:z80];
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}
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}
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- (void)testJR {
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for(const auto &sequence : std::vector<std::vector<uint8_t>>{
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// JR cc
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{0x20, 0x00}, {0x28, 0x00},
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{0x30, 0x00}, {0x38, 0x00},
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{0x18, 0x00}, // JR
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}) {
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CapturingZ80 z80(sequence);
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z80.run_for(12);
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[self validate48Contention:{
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{initial_pc, 4},
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{initial_pc+1, 3},
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{initial_pc+1, 1},
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{initial_pc+1, 1},
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{initial_pc+1, 1},
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{initial_pc+1, 1},
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{initial_pc+1, 1},
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} z80:z80];
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[self validatePlus3Contention:{
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{initial_pc, 4},
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{initial_pc+1, 8},
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} z80:z80];
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}
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}
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- (void)testDJNZ {
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for(const auto &sequence : std::vector<std::vector<uint8_t>>{
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{0x10, 0x00}
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}) {
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CapturingZ80 z80(sequence);
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z80.run_for(13);
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[self validate48Contention:{
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{initial_pc, 4},
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{initial_ir, 1},
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{initial_pc+1, 3},
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{initial_pc+1, 1},
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{initial_pc+1, 1},
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{initial_pc+1, 1},
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{initial_pc+1, 1},
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{initial_pc+1, 1},
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} z80:z80];
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[self validatePlus3Contention:{
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{initial_pc, 5},
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{initial_pc+1, 8},
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} z80:z80];
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}
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}
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- (void)testRLDRRD {
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for(const auto &sequence : std::vector<std::vector<uint8_t>>{
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{0xed, 0x6f}, // RLD
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{0xed, 0x67}, // RRD
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}) {
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CapturingZ80 z80(sequence);
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z80.run_for(18);
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[self validate48Contention:{
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{initial_pc, 4},
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{initial_pc+1, 4},
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{initial_bc_de_hl, 3},
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{initial_bc_de_hl, 1},
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{initial_bc_de_hl, 1},
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{initial_bc_de_hl, 1},
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{initial_bc_de_hl, 1},
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{initial_bc_de_hl, 3},
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} z80:z80];
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[self validatePlus3Contention:{
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{initial_pc, 4},
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{initial_pc+1, 4},
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{initial_bc_de_hl, 7},
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{initial_bc_de_hl, 3},
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} z80:z80];
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}
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}
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@end
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