Add disk drive option, start forming controller.

Analyser/Static/TandyCoCo/Target.hpp

@@ -31,6 +31,7 @@ struct Target: public Analyser::Static::Target, public Reflection::StructImpl<Ta
 	std::wstring loading_command;
 	MemorySize memory_size = MemorySize::SixtyFourKB;
 	Model model = Model::TandyCoCo;
+	bool has_disk_drive = false;
 
 private:
 	friend Reflection::StructImpl<Target>;
@@ -39,6 +40,7 @@ private:
 		AnnounceEnum(MemorySize);
 		DeclareField(model);
 		DeclareField(memory_size);
+		DeclareField(has_disk_drive);
 	}
 };
 

Machines/Tandy/CoCo/CoCo.cpp

@@ -8,6 +8,7 @@
 
 #include "CoCo.hpp"
 
+#include "DiskController.hpp"
 #include "Keyboard.hpp"
 
 #include "Processors/6809/6809.hpp"
@@ -370,7 +371,7 @@ static constexpr auto AudioDivider = Cycles(1);
 
 namespace TandyCoCo {
 
-template <bool is_pal>
+template <bool is_pal, bool has_disk_drive>
 class ConcreteMachine:
 	public Activity::Source,
 	public Configurable::Device,
@@ -1056,18 +1057,38 @@ private:
 		update_audio();
 		audio_.set_output(new_audio_output);
 	}
+
+	// MARK: - Disk.
+
+	DiskController disk_controller_;
 };
 
 }
 
+namespace {
+
+template <bool has_disk_drive>
+std::unique_ptr<Machine> create(
+	const Analyser::Static::TandyCoCo::Target &target,
+	const ROMMachine::ROMFetcher &rom_fetcher
+) {
+	if(Analyser::Static::TandyCoCo::is_pal(target.model)) {
+		return std::make_unique<TandyCoCo::ConcreteMachine<true, has_disk_drive>>(target, rom_fetcher);
+	} else {
+		return std::make_unique<TandyCoCo::ConcreteMachine<false, has_disk_drive>>(target, rom_fetcher);
+	}
+}
+
+}
+
 std::unique_ptr<Machine> Machine::create(
 	const Analyser::Static::Target &target,
 	const ROMMachine::ROMFetcher &rom_fetcher
 ) {
 	const auto &coco_target = static_cast<const Analyser::Static::TandyCoCo::Target &>(target);
-	if(Analyser::Static::TandyCoCo::is_pal(coco_target.model)) {
-		return std::make_unique<TandyCoCo::ConcreteMachine<true>>(coco_target, rom_fetcher);
+	if(coco_target.has_disk_drive) {
+		return ::create<true>(coco_target, rom_fetcher);
 	} else {
-		return std::make_unique<TandyCoCo::ConcreteMachine<false>>(coco_target, rom_fetcher);
+		return ::create<false>(coco_target, rom_fetcher);
 	}
 }

Machines/Tandy/CoCo/DiskController.cpp

@@ -0,0 +1,15 @@
+//
+//  DiskController.cpp
+//  Clock Signal
+//
+//  Created by Thomas Harte on 18/05/2026.
+//  Copyright © 2026 Thomas Harte. All rights reserved.
+//
+
+#include "DiskController.hpp"
+
+using namespace Tandy::CoCo;
+
+DiskController::DiskController() : WD::WD1770(P1773) {
+	emplace_drives(2, 8'000'000, 300, 2);
+}

Machines/Tandy/CoCo/DiskController.hpp

@@ -0,0 +1,21 @@
+//
+//  DiskController.hpp
+//  Clock Signal
+//
+//  Created by Thomas Harte on 18/05/2026.
+//  Copyright © 2026 Thomas Harte. All rights reserved.
+//
+
+#pragma once
+
+#include "Components/1770/1770.hpp"
+
+namespace Tandy::CoCo {
+
+class DiskController final: public WD::WD1770 {
+public:
+	DiskController();
+
+};
+
+}

OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj

@@ -43,6 +43,9 @@
 		42EB812E2B4700B700429AF4 /* MemoryMap.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 42EB812C2B47008D00429AF4 /* MemoryMap.cpp */; };
 		42EB812F2B4700B800429AF4 /* MemoryMap.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 42EB812C2B47008D00429AF4 /* MemoryMap.cpp */; };
 		4B01710F2FB6ADA700302CEF /* QuickLoadCompositeDynamicCropOptions.xib in Resources */ = {isa = PBXBuildFile; fileRef = 4B01710D2FB6ADA700302CEF /* QuickLoadCompositeDynamicCropOptions.xib */; };
+		4B0171122FBBA40F00302CEF /* DiskController.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4B0171112FBBA40F00302CEF /* DiskController.cpp */; };
+		4B0171132FBBA40F00302CEF /* DiskController.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4B0171112FBBA40F00302CEF /* DiskController.cpp */; };
+		4B0171142FBBA40F00302CEF /* DiskController.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4B0171112FBBA40F00302CEF /* DiskController.cpp */; };
 		4B018B89211930DE002A3937 /* 65C02_extended_opcodes_test.bin in Resources */ = {isa = PBXBuildFile; fileRef = 4B018B88211930DE002A3937 /* 65C02_extended_opcodes_test.bin */; };
 		4B01A6881F22F0DB001FD6E3 /* Z80MemptrTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4B01A6871F22F0DB001FD6E3 /* Z80MemptrTests.swift */; };
 		4B0333AF2094081A0050B93D /* AppleDSK.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4B0333AD2094081A0050B93D /* AppleDSK.cpp */; };
@@ -1398,6 +1401,8 @@
 		42EB81272B23AAC300429AF4 /* IMD.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = IMD.hpp; sourceTree = "<group>"; };
 		42EB812C2B47008D00429AF4 /* MemoryMap.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = MemoryMap.cpp; sourceTree = "<group>"; };
 		4B01710E2FB6ADA700302CEF /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.xib; name = Base; path = Base.lproj/QuickLoadCompositeDynamicCropOptions.xib; sourceTree = "<group>"; };
+		4B0171102FBBA40F00302CEF /* DiskController.hpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.h; path = DiskController.hpp; sourceTree = "<group>"; };
+		4B0171112FBBA40F00302CEF /* DiskController.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = DiskController.cpp; sourceTree = "<group>"; };
 		4B018B88211930DE002A3937 /* 65C02_extended_opcodes_test.bin */ = {isa = PBXFileReference; lastKnownFileType = archive.macbinary; name = 65C02_extended_opcodes_test.bin; path = "Klaus Dormann/65C02_extended_opcodes_test.bin"; sourceTree = "<group>"; };
 		4B01A6871F22F0DB001FD6E3 /* Z80MemptrTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Z80MemptrTests.swift; sourceTree = "<group>"; };
 		4B03291F2D0923E300C51EB5 /* Video.hpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.h; path = Video.hpp; sourceTree = "<group>"; };
@@ -3441,7 +3446,9 @@
 			isa = PBXGroup;
 			children = (
 				4B41EF6F2FA55F980086D909 /* CoCo.cpp */,
+				4B0171112FBBA40F00302CEF /* DiskController.cpp */,
 				4B41EF6E2FA55F980086D909 /* CoCo.hpp */,
+				4B0171102FBBA40F00302CEF /* DiskController.hpp */,
 				4B41EF842FAC26590086D909 /* Keyboard.hpp */,
 			);
 			path = CoCo;
@@ -6639,6 +6646,7 @@
 				4B9BE401203A0C0600FFAE60 /* MultiSpeaker.cpp in Sources */,
 				4BB505812B962DDF0031C43C /* Plus3.cpp in Sources */,
 				4B055AA61FAE85EF0060FFFF /* Parser.cpp in Sources */,
+				4B0171142FBBA40F00302CEF /* DiskController.cpp in Sources */,
 				4BF8D4D6251C11DD00BBE21B /* 65816Storage.cpp in Sources */,
 				4B055AEF1FAE9BF00060FFFF /* Typer.cpp in Sources */,
 				4B89453F201967B4007DE474 /* StaticAnalyser.cpp in Sources */,
@@ -6928,6 +6936,7 @@
 				4BEDA3BA25B25563000C2DBD /* Decoder.cpp in Sources */,
 				4BFEA2EF2682A7B900EBF94C /* Dave.cpp in Sources */,
 				4B4518A21F75FD1C00926311 /* G64.cpp in Sources */,
+				4B0171132FBBA40F00302CEF /* DiskController.cpp in Sources */,
 				4B0B23A62D6AC53B00153879 /* CSFileContentChangeObserver.m in Sources */,
 				4B89452C201967B4007DE474 /* Tape.cpp in Sources */,
 				4B448E811F1C45A00009ABD6 /* TZX.cpp in Sources */,
@@ -7402,6 +7411,7 @@
 				4B06AB0E2C6461700034D014 /* MultiMediaTarget.cpp in Sources */,
 				42437B332AC70833006DFED1 /* HDV.cpp in Sources */,
 				4B06AAE82C645FCD0034D014 /* RP5C01.cpp in Sources */,
+				4B0171122FBBA40F00302CEF /* DiskController.cpp in Sources */,
 				4B06AAEC2C645FF50034D014 /* Keyboard.cpp in Sources */,
 				4B06AAF02C6460240034D014 /* ReactiveDevice.cpp in Sources */,
 				4B7752C028217F3D0073E2C5 /* Line.cpp in Sources */,