Adds instructions, display, instructiontarget, etc
This commit is contained in:
parent
54fa43a893
commit
053d7b267d
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@ -14,7 +14,7 @@ class Assembler(private var labels: Labels,
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private var codeAssembledOK = false
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private var BOOTSTRAP_ADDRESS = 0x600
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fun assembleCode(lines: Array<String>): Boolean {
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fun assembleCode(lines: List<String>): Boolean {
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lines.forEach { line ->
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if (!assembleLine(line)) {
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return false
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@ -132,7 +132,7 @@ class Assembler(private var labels: Labels,
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}
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private fun checkAbsolute(param: String, opcode: Int): Boolean {
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if (checkWordOperand("^([\\w\$]+)$")) {
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if (checkWordOperand(param, opcode, "^([\\w\$]+)$")) {
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return true
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}
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@ -196,40 +196,67 @@ class Assembler(private var labels: Labels,
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}
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private fun checkIndirectY(param: String, opcode: Int): Boolean {
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if (opcode == 0xff) {
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return false
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}
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return checkByteOperand(param, opcode, "^\\(([\\w\$]+)\\),Y$")
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}
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private fun checkIndirectX(param: String, opcode: Int): Boolean {
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if (opcode == 0xff) {
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return false
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}
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return checkByteOperand(param, opcode, "^\\(([\\w\$]+)\\),X$")
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}
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private fun checkIndirect(param: String, opcode: Int): Boolean {
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if (opcode == 0xff) {
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return false
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}
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return checkWordOperand(param, opcode, "^\\(([\\w\$]+)\\)$")
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}
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private fun checkAbsoluteY(param: String, opcode: Int): Boolean {
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if (opcode == 0xff) {
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return false
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}
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return checkWordOperand(param, opcode, "^([\\w\$]+),Y$") ||
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checkLabel(param, opcode, "^\\w+,Y$".toRegex())
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}
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private fun checkAbsoluteX(param: String, opcode: Int): Boolean {
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if (opcode == 0xff) {
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return false
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}
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return checkWordOperand(param, opcode, "^([\\w\$]+),X$") ||
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checkLabel(param, opcode, "^\\w+,X$".toRegex())
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}
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private fun checkZeroPageY(param: String, opcode: Int): Boolean {
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if (opcode == 0xff) {
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return false
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}
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return checkByteOperand(param, opcode, "^([\\w\$]+),Y")
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}
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private fun checkZeroPageX(param: String, opcode: Int): Boolean {
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if (opcode == 0xff) {
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return false
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}
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return checkByteOperand(param, opcode, "^([\\w\$]+),X")
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}
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private fun checkZeroPage(param: String, opcode: Int): Boolean {
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if (opcode == 0xff) {
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return false
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}
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return innerCheckByteOperand(param, opcode)
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}
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private fun checkImmediate(param: String, opcode: Int): Boolean {
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if (opcode == 0xff) {
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return false
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}
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if (checkByteOperand(param, opcode, "^#([\\w\$]+)$")) {
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return true
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}
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@ -1,83 +1,87 @@
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package android.emu6502
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import android.emu6502.instructions.*
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import android.emu6502.instructions.BaseInstruction
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import android.emu6502.instructions.Instruction
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import android.emu6502.instructions.InstructionTarget
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import android.emu6502.instructions.impl.*
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import android.util.Log
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import java.util.HashMap
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import kotlin.reflect.KMemberFunction0
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class CPU(private val memory: Memory) {
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// Accumulator
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private var A: Byte = 0
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var A: Int = 0
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// Registers
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private var X: Byte = 0
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private var Y: Byte = 0
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var X: Int = 0
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var Y: Int = 0
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// Program counter
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private var PC = 0x600
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var PC: Int = 0x600
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// Stack pointer
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private var SP = 0xFF
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private var flags: Byte = 0
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var SP: Int = 0xFF
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// Processor flags
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var P: Int = 0
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private var isRunning = false
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private var debug = false
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private var monitoring = false
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private var TAG = "CPU"
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private val instructionList: HashMap<Int, KMemberFunction0<BaseInstruction, Unit>> = HashMap()
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val instructionList: HashMap<Int, InstructionTarget> = HashMap()
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private val operationList: HashMap<Instruction, BaseInstruction> = hashMapOf(
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Pair(Instruction.ADC, ADC(instructionList)),
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Pair(Instruction.AND, AND(instructionList)),
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Pair(Instruction.ASL, ASL(instructionList)),
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Pair(Instruction.BIT, BIT(instructionList)),
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Pair(Instruction.BPL, BPL(instructionList)),
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Pair(Instruction.BMI, BMI(instructionList)),
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Pair(Instruction.BVC, BVC(instructionList)),
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Pair(Instruction.BVS, BVS(instructionList)),
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Pair(Instruction.BCC, BCC(instructionList)),
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Pair(Instruction.BCS, BCS(instructionList)),
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Pair(Instruction.BNE, BNE(instructionList)),
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Pair(Instruction.BEQ, BEQ(instructionList)),
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Pair(Instruction.BRK, BRK(instructionList)),
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Pair(Instruction.CMP, CMP(instructionList)),
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Pair(Instruction.CPX, CPX(instructionList)),
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Pair(Instruction.CPY, CPY(instructionList)),
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Pair(Instruction.DEC, DEC(instructionList)),
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Pair(Instruction.EOR, EOR(instructionList)),
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Pair(Instruction.CLC, CLC(instructionList)),
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Pair(Instruction.SEC, SEC(instructionList)),
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Pair(Instruction.CLI, CLI(instructionList)),
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Pair(Instruction.SEI, SEI(instructionList)),
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Pair(Instruction.CLV, CLV(instructionList)),
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Pair(Instruction.CLD, CLD(instructionList)),
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Pair(Instruction.SED, SED(instructionList)),
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Pair(Instruction.INC, INC(instructionList)),
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Pair(Instruction.JMP, JMP(instructionList)),
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Pair(Instruction.JSR, JSR(instructionList)),
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Pair(Instruction.LDA, LDA(instructionList)),
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Pair(Instruction.LDX, LDX(instructionList)),
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Pair(Instruction.LDY, LDY(instructionList)),
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Pair(Instruction.LSR, LSR(instructionList)),
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Pair(Instruction.NOP, NOP(instructionList)),
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Pair(Instruction.ORA, ORA(instructionList)),
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Pair(Instruction.TAX, TAX(instructionList)),
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Pair(Instruction.TXA, TXA(instructionList)),
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Pair(Instruction.DEX, DEX(instructionList)),
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Pair(Instruction.INX, INX(instructionList)),
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Pair(Instruction.TAY, TAY(instructionList)),
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Pair(Instruction.TYA, TYA(instructionList)),
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Pair(Instruction.DEY, DEY(instructionList)),
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Pair(Instruction.INY, INY(instructionList)),
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Pair(Instruction.ROR, ROR(instructionList)),
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Pair(Instruction.ROL, ROL(instructionList)),
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Pair(Instruction.RTI, RTI(instructionList)),
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Pair(Instruction.RTS, RTS(instructionList)),
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Pair(Instruction.SBC, SBC(instructionList)),
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Pair(Instruction.STA, STA(instructionList)),
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Pair(Instruction.TXS, TXS(instructionList)),
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Pair(Instruction.TSX, TSX(instructionList)),
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Pair(Instruction.PHA, PHA(instructionList)),
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Pair(Instruction.PLA, PLA(instructionList)),
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Pair(Instruction.PHP, PHP(instructionList)),
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Pair(Instruction.PLP, PLP(instructionList)),
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Pair(Instruction.STX, STX(instructionList)),
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Pair(Instruction.STY, STY(instructionList))
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Pair(Instruction.ADC, ADC(this)),
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Pair(Instruction.AND, AND(this)),
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Pair(Instruction.ASL, ASL(this)),
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Pair(Instruction.BIT, BIT(this)),
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Pair(Instruction.LDA, LDA(this)),
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Pair(Instruction.LDX, LDX(this)),
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Pair(Instruction.LDY, LDY(this)),
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Pair(Instruction.STA, STA(memory, this)),
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Pair(Instruction.STX, STX(this)),
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Pair(Instruction.ORA, ORA(this))
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// Pair(Instruction.BPL, BPL(this)),
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// Pair(Instruction.BMI, BMI(this)),
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// Pair(Instruction.BVC, BVC(this)),
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// Pair(Instruction.BVS, BVS(this)),
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// Pair(Instruction.BCC, BCC(this)),
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// Pair(Instruction.BCS, BCS(this)),
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// Pair(Instruction.BNE, BNE(this)),
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// Pair(Instruction.BEQ, BEQ(this)),
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// Pair(Instruction.BRK, BRK(this)),
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// Pair(Instruction.CMP, CMP(this)),
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// Pair(Instruction.CPX, CPX(this)),
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// Pair(Instruction.CPY, CPY(this)),
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// Pair(Instruction.DEC, DEC(this)),
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// Pair(Instruction.EOR, EOR(this)),
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// Pair(Instruction.CLC, CLC(this)),
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// Pair(Instruction.SEC, SEC(this)),
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// Pair(Instruction.CLI, CLI(this)),
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// Pair(Instruction.SEI, SEI(this)),
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// Pair(Instruction.CLV, CLV(this)),
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// Pair(Instruction.CLD, CLD(this)),
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// Pair(Instruction.SED, SED(this)),
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// Pair(Instruction.INC, INC(this)),
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// Pair(Instruction.JMP, JMP(this)),
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// Pair(Instruction.JSR, JSR(this)),
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// Pair(Instruction.LSR, LSR(this)),
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// Pair(Instruction.NOP, NOP(this)),
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// Pair(Instruction.TAX, TAX(this)),
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// Pair(Instruction.TXA, TXA(this)),
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// Pair(Instruction.DEX, DEX(this)),
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// Pair(Instruction.INX, INX(this)),
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// Pair(Instruction.TAY, TAY(this)),
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// Pair(Instruction.TYA, TYA(this)),
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// Pair(Instruction.DEY, DEY(this)),
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// Pair(Instruction.INY, INY(this)),
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// Pair(Instruction.ROR, ROR(this)),
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// Pair(Instruction.ROL, ROL(this)),
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// Pair(Instruction.RTI, RTI(this)),
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// Pair(Instruction.RTS, RTS(this)),
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// Pair(Instruction.SBC, SBC(this)),
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// Pair(Instruction.TXS, TXS(this)),
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// Pair(Instruction.TSX, TSX(this)),
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// Pair(Instruction.PHA, PHA(this)),
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// Pair(Instruction.PLA, PLA(this)),
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// Pair(Instruction.PHP, PHP(this)),
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// Pair(Instruction.PLP, PLP(this)),
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// Pair(Instruction.STY, STY(this))
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)
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fun execute() {
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@ -96,19 +100,41 @@ class CPU(private val memory: Memory) {
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private fun executeNextInstruction() {
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val instruction = Integer.valueOf(popByte().toInt().toString(), 16)
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val function = instructionList.get(instruction)
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if (function != null) {
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ORA(instructionList).function()
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val target = instructionList.get(instruction)
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if (target != null) {
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val function = target.method
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target.operation.function()
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} else {
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Log.e(TAG, "Address $" + PC + " - unknown opcode")
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}
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}
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private fun popByte(): Byte {
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fun popByte(): Int {
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return memory.get((PC++).and(0xff));
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}
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private fun setRandomByte() {
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memory.set(0xfe, Math.floor(Math.random() * 256).toInt())
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}
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fun setSZFlagsForRegA() {
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setSZFlagsForValue(A)
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}
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private fun setSZFlagsForValue(value: Int) {
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if (value != 0) {
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P = P.and(0xfd);
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} else {
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P = P.or(0x02);
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}
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if (value.and(0x80) != 0) {
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P = P.or(0x80);
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} else {
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P = P.and(0x7f);
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}
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}
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fun popWord(): Int {
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return popByte() + popByte().shl(8)
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}
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}
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@ -0,0 +1,6 @@
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package android.emu6502
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final class Display {
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fun updatePixel(addr: Int) {
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}
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}
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@ -0,0 +1,8 @@
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package android.emu6502
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final class Emulator {
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val display = Display()
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val memory = Memory(display)
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val cpu = CPU(memory)
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val assembler = Assembler(Labels(), memory, Symbols())
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}
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@ -1,13 +1,20 @@
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package android.emu6502
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class Memory {
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private val mem = ByteArray(65536)
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class Memory(private val display: Display) {
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private val mem = IntArray(65536)
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public fun get(addr: Int): Byte {
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fun get(addr: Int): Int {
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return mem[addr]
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}
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public fun set(addr: Int, value: Int) {
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mem[addr] = value.toByte()
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fun set(addr: Int, value: Int) {
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mem[addr] = value
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}
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fun storeByte(addr: Int, value: Int) {
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set(addr, value.and(0xff))
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if ((addr >= 0x200) && (addr <= 0x5ff)) {
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display.updatePixel(addr)
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}
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}
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}
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@ -1,5 +1,6 @@
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package android.emu6502.app
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import android.emu6502.Emulator
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import android.emu6502.R
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import android.os.Bundle
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import android.support.design.widget.FloatingActionButton
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@ -9,6 +10,7 @@ import android.support.v7.widget.Toolbar
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import android.view.Menu
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import android.view.MenuItem
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import android.widget.TextView
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import android.widget.Toast
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import butterknife.bindView
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public class MainActivity : AppCompatActivity() {
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@ -20,7 +22,9 @@ public class MainActivity : AppCompatActivity() {
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val txtSP: TextView by bindView(R.id.SP)
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val txtPC: TextView by bindView(R.id.PC)
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val txtFlags: TextView by bindView(R.id.PC)
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val fab: FloatingActionButton by bindView(R.id.fab)
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val txtInstructions: TextView by bindView(R.id.txtInstructions)
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val fabRun: FloatingActionButton by bindView(R.id.fabRun)
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val emulator = Emulator()
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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@ -30,6 +34,11 @@ public class MainActivity : AppCompatActivity() {
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var ab: ActionBar = getSupportActionBar()
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ab.setDisplayHomeAsUpEnabled(true)
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fabRun.setOnClickListener {
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emulator.assembler.assembleCode(txtInstructions.getText().toString().splitBy("\n"))
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Toast.makeText(fabRun.getContext(), "Code assembled", Toast.LENGTH_SHORT).show()
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}
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}
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override fun onCreateOptionsMenu(menu: Menu?): Boolean {
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@ -1,9 +0,0 @@
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package android.emu6502.instructions
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import java.util.*
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import kotlin.reflect.KMemberFunction0
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/** ADd with Carry */
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class ADC(instructionList: HashMap<Int, KMemberFunction0<BaseInstruction, Unit>>)
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: BaseInstruction(Instruction.ADC, instructionList) {
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}
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@ -1,9 +0,0 @@
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package android.emu6502.instructions
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import java.util.*
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import kotlin.reflect.KMemberFunction0
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/** bitwise AND with accumulator */
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class AND(instructionList: HashMap<Int, KMemberFunction0<BaseInstruction, Unit>>)
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: BaseInstruction(Instruction.AND, instructionList) {
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}
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@ -1,9 +0,0 @@
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package android.emu6502.instructions
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import java.util.*
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import kotlin.reflect.KMemberFunction0
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/** Arithmetic Shift Left */
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class ASL(instructionList: HashMap<Int, KMemberFunction0<BaseInstruction, Unit>>)
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: BaseInstruction(Instruction.ASL, instructionList) {
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}
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@ -3,7 +3,7 @@ package android.emu6502.instructions
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import java.util.HashMap
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open class BaseInstruction(private val instruction: Instruction,
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private val instructionList: HashMap<Int, kotlin.reflect.KMemberFunction0<BaseInstruction, Unit>>) {
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private val instructionList: HashMap<Int, InstructionTarget>) {
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init {
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val opcodes: IntArray = Opcodes.MAP[instruction] as IntArray
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@ -12,44 +12,44 @@ open class BaseInstruction(private val instruction: Instruction,
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opcodes.forEachIndexed { i, opcode ->
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if (opcode != 0xff) {
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instructionList.put(opcodes[i], methods[i])
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instructionList.put(opcodes[i], InstructionTarget(this, methods[i]))
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}
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}
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}
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fun immediate() {
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open fun immediate() {
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}
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fun zeroPage() {
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open fun zeroPage() {
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}
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fun zeroPageX() {
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open fun zeroPageX() {
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}
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fun zeroPageY() {
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open fun zeroPageY() {
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}
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fun absolute() {
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open fun absolute() {
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}
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fun absoluteX() {
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open fun absoluteX() {
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}
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fun absoluteY() {
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open fun absoluteY() {
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}
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fun indirect() {
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open fun indirect() {
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}
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fun indirectX() {
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open fun indirectX() {
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}
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fun indirectY() {
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open fun indirectY() {
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}
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fun single() {
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open fun single() {
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}
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fun branch() {
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open fun branch() {
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}
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}
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@ -0,0 +1,7 @@
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package android.emu6502.instructions
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import kotlin.reflect.KMemberFunction0
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|
||||
class InstructionTarget(val operation: BaseInstruction,
|
||||
val method: KMemberFunction0<BaseInstruction, Unit>) {
|
||||
}
|
|
@ -1,9 +0,0 @@
|
|||
package android.emu6502.instructions
|
||||
|
||||
import java.util.*
|
||||
import kotlin.reflect.KMemberFunction0
|
||||
|
||||
/** LoaD X register */
|
||||
class LDX(instructionList: HashMap<Int, KMemberFunction0<BaseInstruction, Unit>>)
|
||||
: BaseInstruction(Instruction.LDX, instructionList) {
|
||||
}
|
|
@ -1,8 +0,0 @@
|
|||
package android.emu6502.instructions
|
||||
|
||||
import java.util.HashMap
|
||||
|
||||
/** bitwise OR with Accumulator */
|
||||
class ORA(instructionList: HashMap<Int, kotlin.reflect.KMemberFunction0<BaseInstruction, Unit>>)
|
||||
: BaseInstruction(Instruction.ORA, instructionList) {
|
||||
}
|
|
@ -1,10 +0,0 @@
|
|||
package android.emu6502.instructions
|
||||
|
||||
|
||||
import java.util.*
|
||||
import kotlin.reflect.KMemberFunction0
|
||||
|
||||
/** STore X register */
|
||||
class STX(instructionList: HashMap<Int, KMemberFunction0<BaseInstruction, Unit>>)
|
||||
: BaseInstruction(Instruction.STX, instructionList) {
|
||||
}
|
|
@ -0,0 +1,10 @@
|
|||
package android.emu6502.instructions.impl
|
||||
|
||||
import android.emu6502.CPU
|
||||
import android.emu6502.instructions.BaseInstruction
|
||||
import android.emu6502.instructions.Instruction
|
||||
|
||||
/** ADd with Carry */
|
||||
class ADC(cpu: CPU)
|
||||
: BaseInstruction(Instruction.ADC, cpu.instructionList) {
|
||||
}
|
|
@ -0,0 +1,10 @@
|
|||
package android.emu6502.instructions.impl
|
||||
|
||||
import android.emu6502.CPU
|
||||
import android.emu6502.instructions.BaseInstruction
|
||||
import android.emu6502.instructions.Instruction
|
||||
|
||||
/** bitwise AND with accumulator */
|
||||
class AND(cpu: CPU)
|
||||
: BaseInstruction(Instruction.AND, cpu.instructionList) {
|
||||
}
|
|
@ -0,0 +1,10 @@
|
|||
package android.emu6502.instructions.impl
|
||||
|
||||
import android.emu6502.CPU
|
||||
import android.emu6502.instructions.BaseInstruction
|
||||
import android.emu6502.instructions.Instruction
|
||||
|
||||
/** Arithmetic Shift Left */
|
||||
class ASL(cpu: CPU)
|
||||
: BaseInstruction(Instruction.ASL, cpu.instructionList) {
|
||||
}
|
|
@ -0,0 +1,10 @@
|
|||
package android.emu6502.instructions.impl
|
||||
|
||||
import android.emu6502.CPU
|
||||
import android.emu6502.instructions.BaseInstruction
|
||||
import android.emu6502.instructions.Instruction
|
||||
|
||||
/** test BITs */
|
||||
class BIT(cpu: CPU)
|
||||
: BaseInstruction(Instruction.BIT, cpu.instructionList) {
|
||||
}
|
|
@ -0,0 +1,15 @@
|
|||
package android.emu6502.instructions.impl
|
||||
|
||||
import android.emu6502.CPU
|
||||
import android.emu6502.instructions.BaseInstruction
|
||||
import android.emu6502.instructions.Instruction
|
||||
|
||||
/** LoaD Accumulator */
|
||||
class LDA(private val cpu: CPU)
|
||||
: BaseInstruction(Instruction.LDA, cpu.instructionList) {
|
||||
|
||||
override fun immediate() {
|
||||
cpu.A = cpu.popByte()
|
||||
cpu.setSZFlagsForRegA()
|
||||
}
|
||||
}
|
|
@ -0,0 +1,9 @@
|
|||
package android.emu6502.instructions.impl
|
||||
|
||||
import android.emu6502.CPU
|
||||
import android.emu6502.instructions.BaseInstruction
|
||||
import android.emu6502.instructions.Instruction
|
||||
|
||||
/** LoaD X register */
|
||||
class LDX(cpu: CPU) : BaseInstruction(Instruction.LDX, cpu.instructionList) {
|
||||
}
|
|
@ -0,0 +1,10 @@
|
|||
package android.emu6502.instructions.impl
|
||||
|
||||
import android.emu6502.CPU
|
||||
import android.emu6502.instructions.BaseInstruction
|
||||
import android.emu6502.instructions.Instruction
|
||||
|
||||
/** LoaD Y register */
|
||||
class LDY(cpu: CPU)
|
||||
: BaseInstruction(Instruction.LDY, cpu.instructionList) {
|
||||
}
|
|
@ -0,0 +1,10 @@
|
|||
package android.emu6502.instructions.impl
|
||||
|
||||
import android.emu6502.CPU
|
||||
import android.emu6502.instructions.BaseInstruction
|
||||
import android.emu6502.instructions.Instruction
|
||||
|
||||
/** bitwise OR with Accumulator */
|
||||
class ORA(cpu: CPU)
|
||||
: BaseInstruction(Instruction.ORA, cpu.instructionList) {
|
||||
}
|
|
@ -0,0 +1,16 @@
|
|||
package android.emu6502.instructions.impl
|
||||
|
||||
import android.emu6502.CPU
|
||||
import android.emu6502.Memory
|
||||
import android.emu6502.instructions.BaseInstruction
|
||||
import android.emu6502.instructions.Instruction
|
||||
|
||||
/** STore Accumulator */
|
||||
class STA(private val memory: Memory, private val cpu: CPU)
|
||||
: BaseInstruction(Instruction.STA, cpu.instructionList) {
|
||||
|
||||
override fun absolute() {
|
||||
memory.storeByte(cpu.popWord(), cpu.A);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,10 @@
|
|||
package android.emu6502.instructions.impl
|
||||
|
||||
import android.emu6502.CPU
|
||||
import android.emu6502.instructions.BaseInstruction
|
||||
import android.emu6502.instructions.Instruction
|
||||
|
||||
/** STore X register */
|
||||
class STX(cpu: CPU)
|
||||
: BaseInstruction(Instruction.STX, cpu.instructionList) {
|
||||
}
|
|
@ -39,7 +39,7 @@
|
|||
android:id="@+id/txtInstructions"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="match_parent"
|
||||
android:text="LDA #$80\nSTA $01\nADC $01"
|
||||
android:text="LDA #$01\nSTA $0200\nLDA #$05\nSTA $0201\nLDA #$08\nSTA $0202"
|
||||
android:fontFamily="monospace"
|
||||
android:textSize="14sp"
|
||||
android:gravity="top" />
|
||||
|
@ -145,7 +145,7 @@
|
|||
</LinearLayout>
|
||||
|
||||
<android.support.design.widget.FloatingActionButton
|
||||
android:id="@+id/fab"
|
||||
android:id="@+id/fabRun"
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:layout_gravity="end|bottom"
|
||||
|
|
Loading…
Reference in New Issue