Initial Commit of files

,vscode/ClassicOS.code-workspace

@@ -0,0 +1,11 @@
+{
+  "folders": [
+    {
+      "path": "."
+    }
+  ],
+  "settings": {},
+  "extensions": {
+    "recommendations": []
+  }
+}

,vscode/c_cpp_properties.json

@@ -0,0 +1,67 @@
+{
+	"env": {
+	  "myDefaultIncludePath": ["${workspaceFolder}", "${workspaceFolder}/include"],
+	  "myCompilerPath": "/usr/local/bin/"
+	},
+	"configurations": [
+	  {
+		"name": "Linux",
+		"intelliSenseMode": "clang-x64",
+		"includePath": ["${myDefaultIncludePath}", "/another/path"],
+		"macFrameworkPath": ["/System/Library/Frameworks"],
+		"defines": ["FOO", "BAR=100"],
+		"forcedInclude": ["${workspaceFolder}/include/config.h"],
+		"compilerPath": "/usr/bin/clang",
+		"cStandard": "c17",
+		"cppStandard": "c++20",
+		"compileCommands": "/path/to/compile_commands.json",
+		"browse": {
+		  "path": ["${workspaceFolder}"],
+		  "limitSymbolsToIncludedHeaders": true,
+		  "databaseFilename": ""
+		}
+	  },
+	  {
+		"name": "linux-gcc-x64",
+		"includePath": [
+		  "${workspaceFolder}/**"
+		],
+		"compilerPath": "/usr/bin/gcc",
+		"cStandard": "${default}",
+		"cppStandard": "${default}",
+		"intelliSenseMode": "linux-gcc-x64",
+		"compilerArgs": [
+		  "-Wall",
+		  "-Wextra",
+		  "-Wpedantic"
+		],
+		"configurationProvider": "ms-vscode.makefile-tools"
+	  },
+	  {
+		"name": "Linux",
+		"includePath": [
+		  "/usr/include/x86_64-linux-gnu/c++/5",
+		  "/usr/include/c++/5",
+		  "/usr/local/include",
+		  "/usr/include/x86_64-linux-gnu",
+		  "/usr/include",
+		  "${workspaceRoot}"
+		],
+		"defines": [],
+		"intelliSenseMode": "clang-x64",
+		"browse": {
+		  "path": [
+			"/usr/include/x86_64-linux-gnu/c++/5",
+			"/usr/include/c++/5",
+			"/usr/local/include",
+			"/usr/include/x86_64-linux-gnu",
+			"/usr/include",
+			"${workspaceRoot}"
+		  ],
+		  "limitSymbolsToIncludedHeaders": true,
+		  "databaseFilename": ""
+		}
+	  }
+	],
+	"version": 4
+  }

,vscode/compile_commands.json

@@ -0,0 +1,12 @@
+[
+	{
+	  "directory": "/path/to/project",
+	  "command": "gcc -c -o file1.o file1.c",
+	  "file": "/path/to/project/file1.c"
+	},
+	{
+	  "directory": "/path/to/project",
+	  "command": "g++ -c -o file2.o file2.cpp",
+	  "file": "/path/to/project/file2.cpp"
+	}
+  ]

,vscode/extensions.json

@@ -0,0 +1,11 @@
+{
+	// See https://go.microsoft.com/fwlink/?LinkId=827846
+	// for the documentation about the extensions.json format
+	"recommendations": [
+		"13xforever.language-x86-64-assembly",
+		"franneck94.c-cpp-runne",
+		"formulahendry.code-runner",
+		"ms-vscode.cpptools",
+		"ms-vscode.cpptools-extension-pack"
+	]
+}

,vscode/launch.json

@@ -0,0 +1,32 @@
+{
+	// Use IntelliSense to learn about possible attributes.
+	// Hover to view descriptions of existing attributes.
+	// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+	"version": "0.2.0",
+	"configurations": [
+		{
+			"name": "gcc-8 - Build and debug active file Level 1",
+			"type": "cppdbg",
+			"request": "launch",
+			"program": "${fileDirname}/${fileBasenameNoExtension}",
+			"args": [],
+			"stopAtEntry": false,
+			"cwd": "${workspaceFolder}",
+			"environment": [],
+			"externalConsole": false,
+			"MIMode": "gdb",
+			"setupCommands": [
+				{
+					"description": "Enable pretty-printing for gdb",
+					"text": "-enable-pretty-printing",
+					"ignoreFailures": true
+				}
+			],
+			"preLaunchTask": "Debug Build Level 1",
+			"miDebuggerPath": "/usr/bin/gdb",
+			"logging": {
+				"engineLogging": true
+			}
+		}
+	]
+}

,vscode/settings.json

@@ -0,0 +1,107 @@
+{
+	"files.associations": {
+		"*.c": "c",
+		"*.h": "c",
+		"*.cpp": "cpp",
+		"*.hpp": "hpp",
+		"*.asm": "asm",
+		"*.bin": "bin"
+	},
+	"files.fileAssociations": {
+		".c": "c",
+		".h": "c",
+		".cpp": "cpp",
+		".hpp": "cpp",
+		".asm": "asm",
+		".bin": "bin"
+	},
+	"emmet.includeLanguages": {
+		"c": "c",
+		"cpp": "cpp",
+		"assembly": "asm"
+	},
+	"C_Cpp_Runner.cCompilerPath": "/usr/bin",
+	"C_Cpp_Runner.cppCompilerPath": "/usr/bin",
+	"C_Cpp_Runner.debuggerPath": "/usr/bin",
+	"C_Cpp_Runner.cStandard": "c17",
+	"C_Cpp_Runner.cppStandard": "c++20",
+	"C_Cpp_Runner.msvcBatchPath": "C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Auxiliary/Build/vcvarsall.bat",
+	"C_Cpp_Runner.useMsvc": false,
+	"C_Cpp_Runner.warnings": [
+		"-Wall",
+		"-Wextra",
+		"-Wpedantic"
+	],
+	"C_Cpp_Runner.enableWarnings": true,
+	"C_Cpp_Runner.warningsAsError": false,
+	"C_Cpp_Runner.compilerArgs": [],
+	"C_Cpp_Runner.linkerArgs": [
+		"-dynamic-linker {/lib64/ld-linux-x86-64.so.2}"
+	],
+	"C_Cpp_Runner.includePaths": [],
+	"C_Cpp_Runner.includeSearch": [
+		"*",
+		"**/*"
+	],
+	"C_Cpp_Runner.excludeSearch": [
+		"**/build",
+		"**/build/**",
+		"**/.*",
+		"**/.*/**",
+		"**/.vscode",
+		"**/.vscode/**"
+	],
+	"C_Cpp_Runner.useAddressSanitizer": false,
+	"C_Cpp_Runner.showCompilationTime": false,
+	"c-cpp-flylint.enable": true,
+	"c-cpp-flylint.debug": true,
+	"c-cpp-flylint.flexelint.enable": false,
+	"c-cpp-flylint.cppcheck.enable": true,
+	"c-cpp-flylint.clang.enable": false,
+	"C_Cpp_Config.cCompilerPath": "gcc",
+	"C_Cpp_Config.cppCompilerPath": "g++",
+	"C_Cpp_Config.debuggerPath": "gdb",
+	"C_Cpp_Config.makePath": "make",
+	"C_Cpp.clang_format_sortIncludes": true,
+	"C_Cpp.vcFormat.indent.preserveComments": true,
+	"C_Cpp.vcFormat.indent.namespaceContents": false,
+	"C_Cpp.vcFormat.indent.caseContentsWhenBlock": true,
+	"C_Cpp.vcFormat.space.pointerReferenceAlignment": "right",
+	"C_Cpp.default.browse.limitSymbolsToIncludedHeaders": false,
+	"C_Cpp.default.cppStandard": "c++20",
+	"C_Cpp.default.cStandard": "c17",
+	"C_Cpp.formatting": "clangFormat",
+	"[c]": {
+		"editor.formatOnSave": true,
+		"editor.defaultFormatter": "ms-vscode.cpptools"
+	},
+	"[cpp]": {
+		"editor.formatOnSave": true,
+		"editor.defaultFormatter": "ms-vscode.cpptools"
+	},
+	"C_Cpp.codeAnalysis.clangTidy.enabled": true,
+	"C_Cpp.configurationWarnings": "disabled",
+	"cmake.configureOnOpen": false,
+	"cmake.autoSelectActiveFolder": false,
+	"cmake.configureOnEdit": false,
+	"c-cpp-flylint.flexelint.configFile": "",
+	"c-cpp-flylint.flexelint.executable": "",
+	"c-cpp-flylint.language": "c",
+	"C_Cpp.autocompleteAddParentheses": true,
+	"C_Cpp.errorSquiggles": "Enabled",
+	"C_Cpp_Runner.makePath": "",
+	"cmake.sourceDirectory": "${workspaceFolder}",
+	"C_Cpp.default.compilerPath": "/usr/bin",
+	"C_Cpp.loggingLevel": "",
+	"C_Cpp.default.enableConfigurationSquiggles": "",
+	"C_Cpp.default.includePath": "/usr/bin",
+	"workbench.editorAssociations": {
+		"*.bin": "bin",
+		"*.c": "c",
+		"*.h": "c",
+		"*.cpp": "cpp",
+		"*.hpp": "hpp",
+		"*.asm": "asm"
+	},
+	"C_Cpp.default.intelliSenseMode": "linux-clang-x86"
+}

,vscode/tasks.json

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+{
+	// See https://go.microsoft.com/fwlink/?LinkId=733558
+	// for the documentation about the tasks.json format
+	"version": "2.0.0",
+	"tasks": [
+		{
+			"label": "",
+			"type": "cmake",
+			"command": "test",
+			"problemMatcher": [
+				""
+			]
+		}
+	]
+}

.vs/appsettings.json

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+{
+	"Logging": {
+		"LogLevel": {
+			"Default": "Error",
+			"Microsoft": "Warning"
+		},
+		"Console": {
+			"LogLevel": {
+				"Microsoft": "Information"
+			}
+		}
+	}
+}

CMakeLists.txt

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+cmake -DCMAKE_LINKER=/usr/bin/ld -DCMAKE_CXX_LINK_EXECUTABLE="<CMAKE_LINKER> <FLAGS> <CMAKE_CXX_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>"

README.md

@@ -1,2 +1,21 @@
 # ClassicOS
-An x86 Operating System for 386, 486, Pentium class (P-75, 100, Pentium II, P3, P4, etc
+
+An x86 Operating System for 386, 486, Pentium class (P-75, 100, Pentium II, P3, P4, etc) CPU's
+
+## Tooling
+
+These are the versions I use, but please use the latest possible versions.
+
+NASM version 2.14
+QEMU x86_64
+GNU ld (GNU Binutils for Debian) 2.31.1 or newer
+dd (coreutils) 8.30
+
+The C and C++ standards we are using for this are C17 and C++20
+
+For C/C++:
+ clang version 7.0.1-8+deb10u2 (tags/RELEASE_701/final)
+ gcc version 8.3.0 (Debian 8.3.0-6)
+ g++ version 8.3.0 (Debian 8.3.0-6)
+ GNU gdb (Debian 8.2.1-2+b3) 8.2.1
+ lldb version 7.0.1

src/boot/boot.asm

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+; Set up the segment registers
+   xor ax, ax
+   mov ds, ax
+   mov es, ax
+
+   ; Set up stack and jump to main
+   mov ss, ax
+   mov sp, 0x7c00
+   jmp main
+
+   ; Print 'Booting ClassicOS!' to the screen
+   print:
+       mov si, message
+       mov ah, 0x0e
+   .loop:
+       lodsb
+       test al, al
+       jz .done
+       int 0x10
+       jmp .loop
+   .done:
+       ret
+
+   ; Set the video mode to a 40 column text mode
+   set_video_mode:
+       mov ax, 0x0003    ; Set up a 80x25 text mode
+       int 0x10
+
+       ; Set the number of columns to 40
+       mov ax, 0x1112
+       mov bx, 0x0007
+       int 0x10
+
+       ret
+
+   ; Bootloader entry point
+   main:
+       ; Call the set_video_mode function
+       call set_video_mode
+
+       ; Clear the screen
+       mov ah, 0x06
+       mov al, 0
+       xor bx, bx
+       xor cx, cx
+       mov dh, 24
+       mov dl, 39
+       int 0x10
+
+       ; Call the print function
+       call print
+
+       ; Infinite loop
+   .loop:
+       jmp .loop
+
+   ; Message to print
+   message db 'Booting ClassicOS!', 0
+
+   times 510-($-$$) db 0
+   dw 0xaa55

src/boot/linker.ld

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+ ENTRY(boot)
+     SECTIONS {
+       . = 0x7c00;
+       .text : {
+         *(.text)
+       }
+       /* Add other sections as needed */
+     }

src/drivers/screen/screen.c

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+#include "screen.h"
+#include <dos.h>
+
+void screen_init() {
+    // Initialize the screen driver
+    // Add any necessary initialization code here
+}
+
+void set_40_column_mode() {
+    // Set the screen mode to 40 columns
+    union REGS regs;
+    regs.h.ah = 0x00;
+    regs.h.al = 0x03;
+    int86(0x10, &regs, &regs);
+}
+
+void set_80_column_mode() {
+    // Set the screen mode to 80 columns
+    union REGS regs;
+    regs.h.ah = 0x00;
+    regs.h.al = 0x03;
+    int86(0x10, &regs, &regs);
+
+    regs.h.ah = 0x00;
+    regs.h.al = 0x07;
+    int86(0x10, &regs, &regs);
+}

src/drivers/screen/screen.h

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+#ifndef SCREEN_H
+#define SCREEN_H
+
+// Function to initialize the screen driver
+void screen_init();
+
+// Function to set the screen mode to 40 columns
+void set_40_column_mode();
+
+// Function to set the screen mode to 80 columns
+void set_80_column_mode();
+
+#endif

src/kernel/kernel.c

@@ -0,0 +1,12 @@
+#include "kernel.h"
+
+void kernel_main() {
+    // Your kernel code here
+    // Example: Print a message to the screen
+    print_string("Welcome to ClassicOS!");
+
+    // Infinite loop to keep the kernel running
+    while (1) {
+        // Your kernel code here
+    }
+}

src/kernel/kernel.h

@@ -0,0 +1,7 @@
+#ifndef KERNEL_H
+#define KERNEL_H
+
+// Function to print a null-terminated string to the screen
+void print_string(const char* str);
+
+#endif