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Here's MNetwork!

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This commit is contained in:
Thomas Harte 2017-03-18 20:51:49 -04:00
parent c31d85f820
commit c033bad0b9
3 changed files with 72 additions and 0 deletions
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2
Machines/Atari2600/Atari2600.cpp
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@ -17,6 +17,7 @@
#include "CartridgeCBSRAMPlus.hpp"
#include "CartridgeCommaVid.hpp"
#include "CartridgeMegaBoy.hpp"
#include "CartridgeMNetwork.hpp"
#include "CartridgeParkerBros.hpp"
#include "CartridgeTigervision.hpp"
#include "CartridgeUnpaged.hpp"
@ -88,6 +89,7 @@ void Machine::configure_as_target(const StaticAnalyser::Target &target) {
case StaticAnalyser::Atari2600PagingModel::Tigervision: bus_.reset(new CartridgeTigervision(rom)); break;
case StaticAnalyser::Atari2600PagingModel::CBSRamPlus: bus_.reset(new CartridgeCBSRAMPlus(rom)); break;
case StaticAnalyser::Atari2600PagingModel::MegaBoy: bus_.reset(new CartridgeMegaBoy(rom)); break;
case StaticAnalyser::Atari2600PagingModel::MNetwork: bus_.reset(new CartridgeMNetwork(rom)); break;
case StaticAnalyser::Atari2600PagingModel::Atari8k:
if(target.atari.uses_superchip) {
bus_.reset(new CartridgeAtari8kSuperChip(rom));

68
Machines/Atari2600/CartridgeMNetwork.hpp Normal file
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@ -0,0 +1,68 @@
//
// CartridgeMNetwork.h
// Clock Signal
//
// Created by Thomas Harte on 18/03/2017.
// Copyright © 2017 Thomas Harte. All rights reserved.
//
#ifndef Atari2600_CartridgeMNetwork_hpp
#define Atari2600_CartridgeMNetwork_hpp
#include "Cartridge.hpp"
namespace Atari2600 {
class CartridgeMNetwork: public Cartridge<CartridgeMNetwork> {
public:
CartridgeMNetwork(const std::vector<uint8_t> &rom) :
Cartridge(rom) {
rom_ptr_[0] = rom_.data() + rom_.size() - 4096;
rom_ptr_[1] = rom_ptr_[0] + 2048;
high_ram_ptr_ = high_ram_;
}
void perform_bus_operation(CPU6502::BusOperation operation, uint16_t address, uint8_t *value) {
address &= 0x1fff;
if(!(address & 0x1000)) return;
if(address >= 0x1fe0 && address <= 0x1fe6) {
rom_ptr_[0] = rom_.data() + (address - 0x1fe0) * 2048;
} else if(address == 0x1fe7) {
rom_ptr_[0] = nullptr;
} else if(address >= 0x1ff8 && address <= 0x1ffb) {
int offset = (address - 0x1ff8) * 256;
high_ram_ptr_ = &high_ram_[offset];
}
if(address & 0x800) {
if(address < 0x1900) {
high_ram_ptr_[address & 255] = *value;
} else if(address < 0x1a00) {
if(isReadOperation(operation)) *value = high_ram_ptr_[address & 255];
} else {
if(isReadOperation(operation)) *value = rom_ptr_[1][address & 2047];
}
} else {
if(rom_ptr_[0]) {
if(isReadOperation(operation)) *value = rom_ptr_[0][address & 2047];
} else {
if(address < 0x1400) {
low_ram_[address & 1023] = *value;
} else {
if(isReadOperation(operation)) *value = low_ram_[address & 1023];
}
}
}
}
private:
uint8_t *rom_ptr_[2];
uint8_t *high_ram_ptr_;
uint8_t low_ram_[1024], high_ram_[1024];
};
}
#endif /* Atari2600_CartridgeMNetwork_hpp */

2
OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj
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@ -951,6 +951,7 @@
4BEAC07C1E7DEA6B00EE56B2 /* CartridgeTigervision.hpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.h; path = CartridgeTigervision.hpp; sourceTree = "<group>"; };
4BEAC07D1E7DF13E00EE56B2 /* CartridgeCBSRAMPlus.hpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.h; path = CartridgeCBSRAMPlus.hpp; sourceTree = "<group>"; };
4BEAC07E1E7DF2D000EE56B2 /* CartridgeMegaBoy.hpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.h; path = CartridgeMegaBoy.hpp; sourceTree = "<group>"; };
4BEAC07F1E7DF45900EE56B2 /* CartridgeMNetwork.hpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.h; path = CartridgeMNetwork.hpp; sourceTree = "<group>"; };
4BEE0A6A1D72496600532C7B /* Cartridge.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Cartridge.cpp; sourceTree = "<group>"; };
4BEE0A6B1D72496600532C7B /* Cartridge.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = Cartridge.hpp; sourceTree = "<group>"; };
4BEE0A6D1D72496600532C7B /* PRG.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = PRG.cpp; sourceTree = "<group>"; };
@ -1132,6 +1133,7 @@
4BEA52671DF34909007E74F2 /* PIA.hpp */,
4BEA52651DF3472B007E74F2 /* Speaker.hpp */,
4BE7C9171E3D397100A5496D /* TIA.hpp */,
4BEAC07F1E7DF45900EE56B2 /* CartridgeMNetwork.hpp */,
);
path = Atari2600;
sourceTree = "<group>";