1
0
mirror of https://github.com/TomHarte/CLK.git synced 2024-12-25 03:32:01 +00:00
CLK/OSBindings/Mac/Clock SignalTests/Z80MachineCycleTests.swift
2018-11-23 22:32:32 -05:00

1250 lines
29 KiB
Swift

//
// Z80MachineCycleTests.swift
// Clock Signal
//
// Created by Thomas Harte on 15/06/2017.
// Copyright 2017 Thomas Harte. All rights reserved.
//
import XCTest
class Z80MachineCycleTests: XCTestCase {
private struct MachineCycle: CustomDebugStringConvertible {
var operation: CSTestMachineZ80BusOperationCaptureOperation
var length: Int32
public var debugDescription: String {
get {
var opName = ""
switch operation {
case .readOpcode: opName = "ro"
case .read: opName = "r"
case .write: opName = "w"
case .portRead: opName = "i"
case .portWrite: opName = "o"
case .internalOperation: opName = "iop"
}
return "\(opName) \(length)"
}
}
}
private func test(program : [UInt8], busCycles : [MachineCycle]) {
// Create a machine and install the supplied program at address 0, setting the PC to run from there
let machine = CSTestMachineZ80()
machine.setValue(0x0000, for: .programCounter)
machine.setData(Data(bytes: program), atAddress: 0x0000)
// Figure out the total number of cycles implied by the bus cycles
var totalCycles: Int32 = 0
for cycle in busCycles {
totalCycles += Int32(cycle.length)
}
// Run the machine, capturing bus activity
machine.captureBusActivity = true
machine.runForNumber(ofCycles: totalCycles)
// Check the results
totalCycles = 0
var index = 0
var matches = true
for cycle in machine.busOperationCaptures {
let length = cycle.timeStamp - totalCycles
totalCycles += length
if index >= busCycles.count {
// this can't be reached without one of the asserts failing;
// it's to prevent an unintended exeception via out-of-bounds
// array access
break
} else {
XCTAssert(length & Int32(1) == 0, "While performing \(machine.busOperationCaptures) Z80 ended on a half cycle")
if length != busCycles[index].length*2 || cycle.operation != busCycles[index].operation {
matches = false
break;
}
}
index += 1
}
XCTAssert(matches, "Z80 performed \(machine.busOperationCaptures); was expected to perform \(busCycles)")
}
// LD r, r
func testLDrs() {
test(
program: [0x40],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4)
]
)
}
// LD r, n
func testLDrn() {
test(
program: [0x3e, 0x00],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
]
)
}
// LD r, (HL)
func testLDrHL() {
test(
program: [0x46],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
]
)
}
// LD (HL), r
func testLDHLr() {
test(
program: [0x70],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .write, length: 3),
]
)
}
// LD r, (IX+d)
func testLDrIXd() {
test(
program: [0xdd, 0x7e, 0x10],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .internalOperation, length: 5),
MachineCycle(operation: .read, length: 3),
]
)
}
// LD (IX+d), r
func testLDIXdr() {
test(
program: [0xdd, 0x70, 0x10],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .internalOperation, length: 5),
MachineCycle(operation: .write, length: 3),
]
)
}
// LD (HL), n
func testLDHLn() {
test(
program: [0x36, 0x10],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .write, length: 3),
]
)
}
// LD (IX+d), n
func testLDIXdn() {
test(
program: [0xdd, 0x36, 0x10, 0x80],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 5),
MachineCycle(operation: .write, length: 3),
]
)
}
// LD A, (DE)
func testLDADE() {
test(
program: [0x1a],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
]
)
}
// LD (DE), A
func testLDDEA() {
test(
program: [0x12],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .write, length: 3),
]
)
}
// LD A, (nn)
func testLDAinn() {
test(
program: [0x3a, 0x23, 0x45],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
]
)
}
// LD (nn), A
func testLDinnA() {
test(
program: [0x32, 0x23, 0x45],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .write, length: 3),
]
)
}
// LD A, I
func testLDAI() {
test(
program: [0xed, 0x57],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 5),
]
)
}
// LD I, A
func testLDIA() {
test(
program: [0xed, 0x47],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 5),
]
)
}
// LD dd, nn
func testLDddnn() {
test(
program: [0x01, 0x12, 0x47],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
]
)
}
// LD IX, nn
func testLDIXnn() {
test(
program: [0xdd, 0x21, 0x12, 0x47],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
]
)
}
// LD HL, (nn)
func testLDHLinn() {
test(
program: [0x2a, 0x12, 0x47],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
]
)
}
// LD (nn), HL
func testLDinnHL() {
test(
program: [0x22, 0x12, 0x47],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .write, length: 3),
]
)
}
// LD dd, (nn)
func testLDddinn() {
test(
program: [0xed, 0x4b, 0x12, 0x47],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
]
)
}
// LD (nn), dd
func testLDinndd() {
test(
program: [0xed, 0x43, 0x12, 0x47],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .write, length: 3),
]
)
}
// LD IX, (nn)
func testLDIXinn() {
test(
program: [0xdd, 0x2a, 0x12, 0x47],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
]
)
}
// LD (nn), IX
func testLDinnIX() {
test(
program: [0xdd, 0x22, 0x12, 0x47],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .write, length: 3),
]
)
}
// LD SP, HL
func testLDSPHL() {
test(
program: [0xf9],
busCycles: [
MachineCycle(operation: .readOpcode, length: 6),
]
)
}
// LD SP, IX
func testLDSPIX() {
test(
program: [0xdd, 0xf9],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 6),
]
)
}
// PUSH qq
func testPUSHqq() {
test(
program: [0xc5],
busCycles: [
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .write, length: 3),
]
)
}
// PUSH IX
func testPUSHIX() {
test(
program: [0xdd, 0xe5],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .write, length: 3),
]
)
}
// POP qq
func testPOPqq() {
test(
program: [0xe1],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
]
)
}
// POP IX
func testPOPIX() {
test(
program: [0xdd, 0xe1],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
]
)
}
// EX DE, HL
func testEXDEHL() {
test(
program: [0xeb],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// EX AF, AF'
func testEXAFAFDd() {
test(
program: [0x08],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// EXX
func testEXX() {
test(
program: [0xd9],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// EX (SP), HL
func testEXSPHL() {
test(
program: [0xe3],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 4),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .write, length: 5),
]
)
}
// EX (SP), IX
func testEXSPIX() {
test(
program: [0xdd, 0xe3],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 4),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .write, length: 5),
]
)
}
// LDI
func testLDI() {
test(
program: [0xed, 0xa0],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .write, length: 5),
]
)
}
// CPI (NB: I've diverted from the documentation by assuming the five-cycle 'write' is an internal operation)
func testCPI() {
test(
program: [0xed, 0xa1],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .internalOperation, length: 5),
]
)
}
// LDIR
func testLDIR() {
test(
program: [
0x01, 0x02, 0x00, // LD BC, 2
0xed, 0xb0, // LDIR
0x00, 0x00, 0x00 // NOP, NOP, NOP
],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .write, length: 5),
MachineCycle(operation: .internalOperation, length: 5),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .write, length: 5),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// CPIR (as per CPI; assumed no writes)
func testCPIR() {
test(
program: [
0x01, 0x02, 0x00, // LD BC, 2
0xed, 0xb1, // CPIR
0x00, 0x00, 0x00 // NOP, NOP, NOP
],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .internalOperation, length: 5),
MachineCycle(operation: .internalOperation, length: 5),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .internalOperation, length: 5),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// ADD A,r
func testADDAr() {
test(
program: [0x80],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// ADD A,n
func testADDAn() {
test(
program: [0xc6, 0x00],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
]
)
}
// ADD A,(HL)
func testADDAHL() {
test(
program: [0x86],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
]
)
}
// ADD A,(IX+d)
func testADDAIXd() {
test(
program: [0xdd, 0x86],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .internalOperation, length: 5),
MachineCycle(operation: .read, length: 3),
]
)
}
// INC r, DEC r
func testINCrDECr() {
test(
program: [0x3c, 0x3d],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// INC (HL), DEC (HL)
func testINCHLDECHL() {
test(
program: [0x34, 0x34],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 4),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 4),
MachineCycle(operation: .write, length: 3),
]
)
}
// DAA, CPL, CCF, SCF, NOP, DI, EI, HALT
func testDAACPLCCFSCFNOPDIEIHALT() {
test(
program: [0x27, 0x2f, 0x3f, 0x37, 0x00, 0xf3, 0xfb, 0x76],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4), // one more for luck
]
)
}
// NEG, IM 0, IM 1, IM 2
func testNEGIMs() {
test(
program: [0xed, 0x44, 0xed, 0x46, 0xed, 0x56, 0xed, 0x5e],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// ADD HL, rr
func testADDHL() {
test(
program: [0x09],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .internalOperation, length: 4),
MachineCycle(operation: .internalOperation, length: 3),
]
)
}
// ADD IX, rr
func testADDIX() {
test(
program: [0xdd, 0x09],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .internalOperation, length: 4),
MachineCycle(operation: .internalOperation, length: 3),
]
)
}
// ADD A, (HL)
func testADCHL() {
test(
program: [0xed, 0x4a],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .internalOperation, length: 4),
MachineCycle(operation: .internalOperation, length: 3),
]
)
}
// INC rr
func testINCss() {
test(
program: [0x03],
busCycles: [
MachineCycle(operation: .readOpcode, length: 6),
]
)
}
// INC IX
func testINCIX() {
test(
program: [0xdd, 0x23],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 6),
]
)
}
// RLCA
func testRLCA() {
test(
program: [0x07],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// RLC r
func testRLCr() {
test(
program: [0xcb, 0x00],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// RLC (HL)
func testRLCHL() {
test(
program: [0xcb, 0x06],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 4),
MachineCycle(operation: .write, length: 3),
]
)
}
// RLC (IX+d) (NB: the official table doesn't read the final part of the instruction; I've assumed a five-cycle version of read opcode replaces the internal operation)
func testRLCIX() {
test(
program: [0xdd, 0xcb, 0x00, 0x06],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .read, length: 4),
MachineCycle(operation: .write, length: 3),
]
)
}
// RLD
func testRLD() {
test(
program: [0xed, 0x6f],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .internalOperation, length: 4),
MachineCycle(operation: .write, length: 3),
]
)
}
// BIT n,r
func testBITr() {
test(
program: [0xcb, 0x40],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// SET n,r
func testSETr() {
test(
program: [0xcb, 0xc0],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// BIT n,(HL)
func testBITHL() {
test(
program: [0xcb, 0x46],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 4),
]
)
}
// SET n,(HL)
func testSETHL() {
test(
program: [0xcb, 0xc6],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 4),
MachineCycle(operation: .write, length: 3),
]
)
}
// BIT n,(IX+d)
func testBITIX() {
test(
program: [0xdd, 0xcb, 0x00, 0x46],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .read, length: 4),
]
)
}
// SET n,(IX+d)
func testSETIX() {
test(
program: [0xdd, 0xcb, 0x00, 0xc6],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .read, length: 4),
MachineCycle(operation: .write, length: 3),
]
)
}
// JP nn
func testJPnn() {
test(
program: [0xc3, 0x00, 0x80],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
]
)
}
// JP cc, nn
func testJPccnn() {
test(
program: [
0x37, // SCF
0xd2, 0x00, 0x80, // JP NC, 0x8000
0xda, 0x00, 0x80, // JP C, 0x8000
],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
]
)
}
// JR e
func testJRe() {
test(
program: [0x18, 0x80],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .internalOperation, length: 5),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// JR cc, e
func testJRcce() {
test(
program: [
0x37, // SCF
0x30, 0x80, // JR NC, 0x8000
0x38, 0x80, // JR C, 0x8000
],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .internalOperation, length: 5),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// JP (HL)
func testJPHL() {
test(
program: [0xe9],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// JP (IX)
func testJPIX() {
test(
program: [0xdd, 0xe9],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// DJNZ
func testDJNZ() {
test(
program: [
0x06, 0x02, // LD B, 2
0x10, 0xfe, // DJNZ -2
],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .internalOperation, length: 5),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// CALL
func testCALL() {
test(
program: [0xcd, 0x00, 0x80],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 4),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// CALL cc
func testCALLcc() {
test(
program: [
0x37, // SCF
0xd4, 0x00, 0x80, // CALL NC
0xdc, 0x00, 0x80 // CALL C
],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 4),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// RET
func testRET() {
test(
program: [0xc9],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// RET cc
func testRETcc() {
test(
program: [
0x37, // SCF
0xd0, // RET NC
0xd8, // RET C
],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// RETI
func testRETI() {
test(
program: [0xed, 0x4d],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// RST
func testRST() {
test(
program: [0xc7],
busCycles: [
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// IN A, (n)
func testINAn() {
test(
program: [0xdb, 0xfe],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .portRead, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// IN r, (C)
func testINrC() {
test(
program: [0xed, 0x40],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .portRead, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// INI
func testINI() {
test(
program: [0xed, 0xa2],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .portRead, length: 4),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// INIR
func testINIR() {
test(
program: [
0x01, 0x02, 0x00, // LD BC, 2
0xed, 0xb2, // INIR
0x00, 0x00, 0x00 // NOP, NOP, NOP
],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .portRead, length: 4),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .internalOperation, length: 5),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .portRead, length: 4),
MachineCycle(operation: .write, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// OUT (n), A
func testOUTnA() {
test(
program: [0xd3, 0xfe],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .portWrite, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// OUT (C), r
func testOUTCr() {
test(
program: [0xed, 0x41],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .portWrite, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// OUTI
func testOUTI() {
test(
program: [0xed, 0xa3],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .portWrite, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
// OTIR
func testOTIR() {
test(
program: [
0x01, 0x02, 0x00, // LD BC, 2
0xed, 0xb3, // OTIR
0x00, 0x00, 0x00 // NOP, NOP, NOP
],
busCycles: [
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .portWrite, length: 4),
MachineCycle(operation: .internalOperation, length: 5),
MachineCycle(operation: .readOpcode, length: 4),
MachineCycle(operation: .readOpcode, length: 5),
MachineCycle(operation: .read, length: 3),
MachineCycle(operation: .portWrite, length: 4),
MachineCycle(operation: .readOpcode, length: 4),
]
)
}
}