61 lines
2.0 KiB
Swift
61 lines
2.0 KiB
Swift
//
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// LanguageCard16K.swift
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// FruitMachine
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//
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// Created by Christopher Rohl on 8/6/17.
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// Copyright © 2017 Christopher Rohl. All rights reserved.
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//
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import Cocoa
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class LanguageCard16K: NSObject, Peripheral, HasROM {
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var slotNumber: Int
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var romManager: ROMManager
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//16KB of RAM on the Language Card.
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var ram = [UInt8](repeating: 0xCC, count: 16384)
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var readIOOverride: ReadOverride? = nil
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var writeIOOverride: WriteOverride? = nil
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func installOverrides() {
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func installOverrides() {
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CPU.sharedInstance.memoryInterface.read_overrides.append(readIOOverride!)
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CPU.sharedInstance.memoryInterface.write_overrides.append(writeIOOverride!)
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}
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}
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init(slot: Int, romPath: String) {
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slotNumber = slot
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romManager = ROMManager(path: romPath, atAddress: 0x0, size: 2048)
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super.init()
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readIOOverride = ReadOverride(start: UInt16(0xC080 + (0x10 * slotNumber)),
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end: UInt16(0xC08F + (0x10 * slotNumber)),
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readAnyway: false,
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action: actionDispatchOperation)
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writeIOOverride = WriteOverride(start: UInt16(0xC080 + (0x10 * slotNumber)),
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end: UInt16(0xC08F + (0x10 * slotNumber)),
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writeAnyway: false,
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action: actionDispatchOperation)
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}
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private func actionDispatchOperation(something: AnyObject, address: UInt16, byte: UInt8?) -> UInt8?
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{
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let operationNumber = UInt8(address & 0xFF) - UInt8(0x80 & 0xFF) - UInt8(0x10 * slotNumber)
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var isRead = false
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if(byte == nil) {
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isRead = true
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}
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print("Language Card command: \(isRead == false ? "Read" : "Write") $\(operationNumber.asHexString())")
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return 0x00
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}
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}
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