mirror of
https://github.com/IllusionMan1212/chip-m8.git
synced 2026-10-24 02:12:34 +00:00
initial commit
This commit is contained in:
+100
@@ -0,0 +1,100 @@
|
|||||||
|
---
|
||||||
|
Language: Cpp
|
||||||
|
# BasedOnStyle: WebKit
|
||||||
|
AccessModifierOffset: -4
|
||||||
|
AlignAfterOpenBracket: DontAlign
|
||||||
|
AlignConsecutiveAssignments: false
|
||||||
|
AlignConsecutiveDeclarations: false
|
||||||
|
AlignEscapedNewlines: Right
|
||||||
|
AlignOperands: false
|
||||||
|
AlignTrailingComments: false
|
||||||
|
AllowAllParametersOfDeclarationOnNextLine: true
|
||||||
|
AllowShortBlocksOnASingleLine: false
|
||||||
|
AllowShortCaseLabelsOnASingleLine: true
|
||||||
|
AllowShortFunctionsOnASingleLine: All
|
||||||
|
AllowShortIfStatementsOnASingleLine: false
|
||||||
|
AllowShortLoopsOnASingleLine: false
|
||||||
|
AlwaysBreakAfterDefinitionReturnType: None
|
||||||
|
AlwaysBreakAfterReturnType: None
|
||||||
|
AlwaysBreakBeforeMultilineStrings: false
|
||||||
|
AlwaysBreakTemplateDeclarations: false
|
||||||
|
BinPackArguments: true
|
||||||
|
BinPackParameters: true
|
||||||
|
BraceWrapping:
|
||||||
|
AfterClass: false
|
||||||
|
AfterControlStatement: false
|
||||||
|
AfterEnum: false
|
||||||
|
AfterFunction: true
|
||||||
|
AfterNamespace: false
|
||||||
|
AfterObjCDeclaration: false
|
||||||
|
AfterStruct: false
|
||||||
|
AfterUnion: false
|
||||||
|
BeforeCatch: false
|
||||||
|
BeforeElse: false
|
||||||
|
IndentBraces: false
|
||||||
|
BreakBeforeBinaryOperators: All
|
||||||
|
BreakBeforeBraces: Attach
|
||||||
|
BreakBeforeInheritanceComma: false
|
||||||
|
BreakBeforeTernaryOperators: true
|
||||||
|
BreakConstructorInitializersBeforeComma: false
|
||||||
|
BreakConstructorInitializers: BeforeComma
|
||||||
|
BreakAfterJavaFieldAnnotations: false
|
||||||
|
BreakStringLiterals: true
|
||||||
|
ColumnLimit: 0
|
||||||
|
CommentPragmas: '^ IWYU pragma:'
|
||||||
|
CompactNamespaces: false
|
||||||
|
ConstructorInitializerAllOnOneLineOrOnePerLine: false
|
||||||
|
ConstructorInitializerIndentWidth: 4
|
||||||
|
ContinuationIndentWidth: 4
|
||||||
|
Cpp11BracedListStyle: false
|
||||||
|
DerivePointerAlignment: false
|
||||||
|
DisableFormat: false
|
||||||
|
ExperimentalAutoDetectBinPacking: false
|
||||||
|
FixNamespaceComments: true
|
||||||
|
ForEachMacros: [ foreach, Q_FOREACH, BOOST_FOREACH ]
|
||||||
|
IncludeCategories:
|
||||||
|
- Regex: '^"(llvm|llvm-c|clang|clang-c)/'
|
||||||
|
Priority: 2
|
||||||
|
- Regex: '^(<|"(gtest|isl|json)/)'
|
||||||
|
Priority: 3
|
||||||
|
- Regex: '.*'
|
||||||
|
Priority: 1
|
||||||
|
IncludeIsMainRegex: '$'
|
||||||
|
IndentCaseLabels: false
|
||||||
|
IndentWidth: 4
|
||||||
|
IndentWrappedFunctionNames: false
|
||||||
|
JavaScriptQuotes: Leave
|
||||||
|
JavaScriptWrapImports: true
|
||||||
|
KeepEmptyLinesAtTheStartOfBlocks: false
|
||||||
|
MacroBlockBegin: ''
|
||||||
|
MacroBlockEnd: ''
|
||||||
|
MaxEmptyLinesToKeep: 1
|
||||||
|
NamespaceIndentation: None
|
||||||
|
ObjCBlockIndentWidth: 4
|
||||||
|
ObjCSpaceAfterProperty: true
|
||||||
|
ObjCSpaceBeforeProtocolList: true
|
||||||
|
PenaltyBreakAssignment: 2
|
||||||
|
PenaltyBreakBeforeFirstCallParameter: 19
|
||||||
|
PenaltyBreakComment: 300
|
||||||
|
PenaltyBreakFirstLessLess: 120
|
||||||
|
PenaltyBreakString: 1000
|
||||||
|
PenaltyExcessCharacter: 1000000
|
||||||
|
PenaltyReturnTypeOnItsOwnLine: 60
|
||||||
|
PointerAlignment: Right
|
||||||
|
ReflowComments: true
|
||||||
|
SortIncludes: true
|
||||||
|
SpaceAfterCStyleCast: false
|
||||||
|
SpaceAfterTemplateKeyword: true
|
||||||
|
SpaceBeforeAssignmentOperators: true
|
||||||
|
SpaceBeforeParens: ControlStatements
|
||||||
|
SpaceInEmptyParentheses: false
|
||||||
|
SpacesBeforeTrailingComments: 1
|
||||||
|
SpacesInAngles: false
|
||||||
|
SpacesInContainerLiterals: true
|
||||||
|
SpacesInCStyleCastParentheses: false
|
||||||
|
SpacesInParentheses: false
|
||||||
|
SpacesInSquareBrackets: false
|
||||||
|
Standard: Cpp11
|
||||||
|
TabWidth: 8
|
||||||
|
UseTab: Never
|
||||||
|
...
|
||||||
@@ -0,0 +1,2 @@
|
|||||||
|
roms/
|
||||||
|
Makefile
|
||||||
Vendored
+27
@@ -0,0 +1,27 @@
|
|||||||
|
{
|
||||||
|
// Use IntelliSense to learn about possible attributes.
|
||||||
|
// Hover to view descriptions of existing attributes.
|
||||||
|
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
|
||||||
|
"version": "0.2.0",
|
||||||
|
"configurations": [
|
||||||
|
{
|
||||||
|
"name": "(gdb) Launch",
|
||||||
|
"type": "cppdbg",
|
||||||
|
"request": "launch",
|
||||||
|
"program": "${workspaceFolder}/chip8debug",
|
||||||
|
"args": ["IBM Logo.ch8"],
|
||||||
|
"stopAtEntry": false,
|
||||||
|
"cwd": "${workspaceFolder}",
|
||||||
|
"environment": [],
|
||||||
|
"externalConsole": false,
|
||||||
|
"MIMode": "gdb",
|
||||||
|
"setupCommands": [
|
||||||
|
{
|
||||||
|
"description": "Enable pretty-printing for gdb",
|
||||||
|
"text": "-enable-pretty-printing",
|
||||||
|
"ignoreFailures": true
|
||||||
|
}
|
||||||
|
]
|
||||||
|
}
|
||||||
|
]
|
||||||
|
}
|
||||||
Vendored
+50
@@ -0,0 +1,50 @@
|
|||||||
|
{
|
||||||
|
"cmake.configureOnOpen": true,
|
||||||
|
"files.associations": {
|
||||||
|
"array": "cpp",
|
||||||
|
"atomic": "cpp",
|
||||||
|
"*.tcc": "cpp",
|
||||||
|
"cctype": "cpp",
|
||||||
|
"clocale": "cpp",
|
||||||
|
"cmath": "cpp",
|
||||||
|
"cstdarg": "cpp",
|
||||||
|
"cstddef": "cpp",
|
||||||
|
"cstdint": "cpp",
|
||||||
|
"cstdio": "cpp",
|
||||||
|
"cstdlib": "cpp",
|
||||||
|
"cwchar": "cpp",
|
||||||
|
"cwctype": "cpp",
|
||||||
|
"deque": "cpp",
|
||||||
|
"unordered_map": "cpp",
|
||||||
|
"vector": "cpp",
|
||||||
|
"exception": "cpp",
|
||||||
|
"algorithm": "cpp",
|
||||||
|
"functional": "cpp",
|
||||||
|
"iterator": "cpp",
|
||||||
|
"memory": "cpp",
|
||||||
|
"memory_resource": "cpp",
|
||||||
|
"numeric": "cpp",
|
||||||
|
"optional": "cpp",
|
||||||
|
"random": "cpp",
|
||||||
|
"string": "cpp",
|
||||||
|
"string_view": "cpp",
|
||||||
|
"system_error": "cpp",
|
||||||
|
"tuple": "cpp",
|
||||||
|
"type_traits": "cpp",
|
||||||
|
"utility": "cpp",
|
||||||
|
"fstream": "cpp",
|
||||||
|
"initializer_list": "cpp",
|
||||||
|
"iosfwd": "cpp",
|
||||||
|
"iostream": "cpp",
|
||||||
|
"istream": "cpp",
|
||||||
|
"limits": "cpp",
|
||||||
|
"new": "cpp",
|
||||||
|
"ostream": "cpp",
|
||||||
|
"sstream": "cpp",
|
||||||
|
"stdexcept": "cpp",
|
||||||
|
"streambuf": "cpp",
|
||||||
|
"cinttypes": "cpp",
|
||||||
|
"typeinfo": "cpp",
|
||||||
|
"bit": "cpp"
|
||||||
|
}
|
||||||
|
}
|
||||||
@@ -0,0 +1,17 @@
|
|||||||
|
cmake_minimum_required(VERSION 3.16)
|
||||||
|
|
||||||
|
project(chip8 VERSION 0.1)
|
||||||
|
|
||||||
|
set(CMAKE_CXX_STANDARD 11)
|
||||||
|
set(CMAKE_CSS_STANDARD_REQUIRED True)
|
||||||
|
set(CMAKE_DEBUG_POSTFIX debug)
|
||||||
|
|
||||||
|
add_executable(chip8 main.cpp)
|
||||||
|
set_target_properties(chip8 PROPERTIES DEBUG_POSTFIX ${CMAKE_DEBUG_POSTFIX})
|
||||||
|
|
||||||
|
find_package(sdl2 REQUIRED)
|
||||||
|
target_link_libraries(chip8 SDL2)
|
||||||
|
|
||||||
|
configure_file(version.h.in version.h)
|
||||||
|
|
||||||
|
target_include_directories(chip8 PUBLIC "${PROJECT_BINARY_DIR}")
|
||||||
@@ -0,0 +1,22 @@
|
|||||||
|
|
||||||
|
MIT License
|
||||||
|
|
||||||
|
Copyright (c) 2021 IllusionMan1212
|
||||||
|
|
||||||
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
of this software and associated documentation files (the "Software"), to deal
|
||||||
|
in the Software without restriction, including without limitation the rights
|
||||||
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
copies of the Software, and to permit persons to whom the Software is
|
||||||
|
furnished to do so, subject to the following conditions:
|
||||||
|
|
||||||
|
The above copyright notice and this permission notice shall be included in all
|
||||||
|
copies or substantial portions of the Software.
|
||||||
|
|
||||||
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||||
|
SOFTWARE.
|
||||||
@@ -0,0 +1,32 @@
|
|||||||
|
#include <stdint.h>
|
||||||
|
|
||||||
|
struct Chip8 {
|
||||||
|
uint8_t V[16];
|
||||||
|
uint16_t I;
|
||||||
|
uint16_t PC = 0x200;
|
||||||
|
uint16_t SP;
|
||||||
|
uint16_t stack[16];
|
||||||
|
uint8_t memory[4096];
|
||||||
|
|
||||||
|
uint32_t pixels[64 * 32];
|
||||||
|
bool draw;
|
||||||
|
};
|
||||||
|
|
||||||
|
static const uint8_t font[80] = {
|
||||||
|
0xF0, 0x90, 0x90, 0x90, 0xF0, // 0
|
||||||
|
0x20, 0x60, 0x20, 0x20, 0x70, // 1
|
||||||
|
0xF0, 0x10, 0xF0, 0x80, 0xF0, // 2
|
||||||
|
0xF0, 0x10, 0xF0, 0x10, 0xF0, // 3
|
||||||
|
0x90, 0x90, 0xF0, 0x10, 0x10, // 4
|
||||||
|
0xF0, 0x80, 0xF0, 0x10, 0xF0, // 5
|
||||||
|
0xF0, 0x80, 0xF0, 0x90, 0xF0, // 6
|
||||||
|
0xF0, 0x10, 0x20, 0x40, 0x40, // 7
|
||||||
|
0xF0, 0x90, 0xF0, 0x90, 0xF0, // 8
|
||||||
|
0xF0, 0x90, 0xF0, 0x10, 0xF0, // 9
|
||||||
|
0xF0, 0x90, 0xF0, 0x90, 0x90, // A
|
||||||
|
0xE0, 0x90, 0xE0, 0x90, 0xE0, // B
|
||||||
|
0xF0, 0x80, 0x80, 0x80, 0xF0, // C
|
||||||
|
0xE0, 0x90, 0x90, 0x90, 0xE0, // D
|
||||||
|
0xF0, 0x80, 0xF0, 0x80, 0xF0, // E
|
||||||
|
0xF0, 0x80, 0xF0, 0x80, 0x80 // F
|
||||||
|
};
|
||||||
@@ -0,0 +1,307 @@
|
|||||||
|
#include <SDL2/SDL.h>
|
||||||
|
|
||||||
|
#include "chip8.h"
|
||||||
|
#include "version.h"
|
||||||
|
|
||||||
|
#include <fstream>
|
||||||
|
#include <iostream>
|
||||||
|
|
||||||
|
void poll_events(SDL_Window *window, bool *running) {
|
||||||
|
SDL_Event ev;
|
||||||
|
|
||||||
|
while (SDL_PollEvent(&ev)) {
|
||||||
|
switch (ev.type) {
|
||||||
|
case SDL_QUIT:
|
||||||
|
*running = false;
|
||||||
|
break;
|
||||||
|
case SDL_KEYDOWN:
|
||||||
|
switch (ev.key.keysym.sym) {
|
||||||
|
case SDLK_ESCAPE:
|
||||||
|
*running = false;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case SDL_WINDOWEVENT:
|
||||||
|
switch (ev.window.event) {
|
||||||
|
case SDL_WINDOWEVENT_RESIZED:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void emulate(Chip8 &chip8, SDL_Window *window) {
|
||||||
|
constexpr uint32_t ON_COLOR = 0xFFFFFFFF;
|
||||||
|
constexpr uint32_t OFF_COLOR = 0x000000FF;
|
||||||
|
const uint8_t first_byte = chip8.memory[chip8.PC];
|
||||||
|
const uint8_t second_byte = chip8.memory[chip8.PC + 1];
|
||||||
|
const uint16_t opcode = first_byte << 8 | second_byte;
|
||||||
|
|
||||||
|
printf("Executing %02X%02X \n", first_byte, second_byte);
|
||||||
|
|
||||||
|
switch (first_byte >> 4) {
|
||||||
|
case 0x0:
|
||||||
|
switch (second_byte) {
|
||||||
|
case 0xE0: {
|
||||||
|
// clear the screen with a black color
|
||||||
|
std::fill_n(chip8.pixels, 64 * 32, OFF_COLOR);
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
case 0xEE:
|
||||||
|
// return from a subroutine
|
||||||
|
chip8.SP--;
|
||||||
|
chip8.PC = chip8.stack[chip8.SP];
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case 0x1:
|
||||||
|
chip8.PC = ((first_byte & 0x0F) << 8) | second_byte;
|
||||||
|
break;
|
||||||
|
case 0x2:
|
||||||
|
// CALL subroutine
|
||||||
|
chip8.stack[chip8.SP] = chip8.PC;
|
||||||
|
chip8.SP = (chip8.SP + 1);
|
||||||
|
chip8.PC = ((first_byte & 0x0F) << 8) | second_byte;
|
||||||
|
break;
|
||||||
|
case 0x3:
|
||||||
|
if (chip8.V[first_byte & 0x0F] == second_byte) {
|
||||||
|
chip8.PC += 2;
|
||||||
|
}
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0x4:
|
||||||
|
if (chip8.V[first_byte & 0x0F] != second_byte) {
|
||||||
|
chip8.PC += 2;
|
||||||
|
}
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0x5:
|
||||||
|
if (chip8.V[first_byte & 0x0F] == chip8.V[(second_byte & 0xF0) >> 4]) {
|
||||||
|
chip8.PC += 2;
|
||||||
|
}
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0x6:
|
||||||
|
chip8.V[first_byte & 0x0F] = second_byte;
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0x7:
|
||||||
|
chip8.V[first_byte & 0x0F] = chip8.V[first_byte & 0x0F] + second_byte;
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0x8:
|
||||||
|
switch (second_byte & 0x0F) {
|
||||||
|
case 0x0:
|
||||||
|
chip8.V[first_byte & 0x0F] = chip8.V[(second_byte & 0xF0) >> 4];
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0x1:
|
||||||
|
chip8.V[first_byte & 0x0F] = chip8.V[first_byte & 0x0F] | chip8.V[(second_byte & 0xF0) >> 4];
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0x2:
|
||||||
|
chip8.V[first_byte & 0x0F] = chip8.V[first_byte & 0x0F] & chip8.V[(second_byte & 0xF0) >> 4];
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0x3:
|
||||||
|
chip8.V[first_byte & 0x0F] = chip8.V[first_byte & 0x0F] ^ chip8.V[(second_byte & 0xF0) >> 4];
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0x4:
|
||||||
|
if ((chip8.V[first_byte & 0x0F] + chip8.V[(second_byte & 0xF0) >> 4]) > 0xFF) {
|
||||||
|
chip8.V[0xF] = 1;
|
||||||
|
} else {
|
||||||
|
chip8.V[0xF] = 0;
|
||||||
|
}
|
||||||
|
chip8.V[first_byte & 0x0F] = chip8.V[first_byte & 0x0F] + chip8.V[(second_byte & 0xF0) >> 4];
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0x5:
|
||||||
|
// set Vx = Vx - Vy, set VF = NOT borrow
|
||||||
|
if (chip8.V[first_byte & 0x0F] > chip8.V[(second_byte & 0xF0) >> 4]) {
|
||||||
|
chip8.V[0xF] = 1;
|
||||||
|
} else {
|
||||||
|
chip8.V[0xF] = 0;
|
||||||
|
}
|
||||||
|
chip8.V[first_byte & 0x0F] = chip8.V[first_byte & 0x0F] - chip8.V[(second_byte & 0xF0) >> 4];
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0x6:
|
||||||
|
if (chip8.V[first_byte & 0x0F] & 1 == 1) {
|
||||||
|
chip8.V[0xF] = 1;
|
||||||
|
} else {
|
||||||
|
chip8.V[0xF] = 0;
|
||||||
|
}
|
||||||
|
chip8.V[first_byte & 0x0F] = chip8.V[first_byte & 0x0F] >> 1;
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0x7:
|
||||||
|
// set Vx = Vy - Vx, set VF = NOT borrow
|
||||||
|
if (chip8.V[(second_byte & 0xF0) >> 4] > chip8.V[first_byte & 0x0F]) {
|
||||||
|
chip8.V[0xF] = 1;
|
||||||
|
} else {
|
||||||
|
chip8.V[0xF] = 0;
|
||||||
|
}
|
||||||
|
chip8.V[first_byte & 0x0F] = chip8.V[(second_byte & 0xF0) >> 4] - chip8.V[first_byte & 0x0F];
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0xE:
|
||||||
|
chip8.V[0xF] = (chip8.V[(opcode & 0x0F00) >> 8] >> 7) & 1;
|
||||||
|
chip8.V[first_byte & 0x0F] = chip8.V[first_byte & 0x0F] << 1;
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case 0x9:
|
||||||
|
if (chip8.V[first_byte & 0x0F] != chip8.V[(second_byte & 0xF0) >> 4]) {
|
||||||
|
chip8.PC += 2;
|
||||||
|
}
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0xA:
|
||||||
|
chip8.I = ((first_byte & 0x0F) << 8) | second_byte;
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0xB:
|
||||||
|
chip8.PC = (((first_byte & 0x0F) << 8) | second_byte) + chip8.V[0];
|
||||||
|
break;
|
||||||
|
case 0xC:
|
||||||
|
chip8.V[first_byte & 0x0F] = (rand() & 0x00FF) & second_byte;
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0xD: {
|
||||||
|
int height = second_byte & 0x0F;
|
||||||
|
chip8.V[0xF] = 0;
|
||||||
|
for (int y = 0; y < height; y++) {
|
||||||
|
uint8_t pixel = chip8.memory[chip8.I + y];
|
||||||
|
for (int x = 0; x < 8; x++) {
|
||||||
|
if (pixel & (0x80 >> x)) {
|
||||||
|
// check if we're turning off the pixel and set VF.
|
||||||
|
int index = (chip8.V[first_byte & 0x0F] + x) % 64 + ((chip8.V[((second_byte & 0xF0) >> 4)] + y) % 32) * 64;
|
||||||
|
if (chip8.pixels[index] == ON_COLOR) {
|
||||||
|
chip8.V[0xF] = 1;
|
||||||
|
chip8.pixels[index] = OFF_COLOR;
|
||||||
|
}
|
||||||
|
chip8.pixels[index] = ON_COLOR;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
chip8.draw = true;
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
case 0xE:
|
||||||
|
// TODO:
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
case 0xF:
|
||||||
|
auto X = (opcode & 0x0F00) >> 8;
|
||||||
|
switch (second_byte) {
|
||||||
|
case 0x07:
|
||||||
|
// TODO:
|
||||||
|
break;
|
||||||
|
case 0x0A:
|
||||||
|
// TODO:
|
||||||
|
break;
|
||||||
|
case 0x15:
|
||||||
|
// TODO:
|
||||||
|
break;
|
||||||
|
case 0x18:
|
||||||
|
// TODO:
|
||||||
|
break;
|
||||||
|
case 0x1E:
|
||||||
|
chip8.I = chip8.I + chip8.V[X];
|
||||||
|
break;
|
||||||
|
case 0x29:
|
||||||
|
chip8.I = chip8.V[X] * 5;
|
||||||
|
break;
|
||||||
|
case 0x33:
|
||||||
|
chip8.memory[chip8.I] = (chip8.V[X]) / 100;
|
||||||
|
chip8.memory[chip8.I + 1] = (chip8.V[X] % 100) / 10;
|
||||||
|
chip8.memory[chip8.I + 2] = chip8.V[X] % 10;
|
||||||
|
break;
|
||||||
|
case 0x55: {
|
||||||
|
for (int i = 0; i <= X; i++) {
|
||||||
|
chip8.memory[chip8.I + i] = chip8.V[i];
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
case 0x65: {
|
||||||
|
for (int i = 0; i <= X; i++) {
|
||||||
|
chip8.V[i] = chip8.memory[chip8.I + i];
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
chip8.PC += 2;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
int main(int argc, char **argv) {
|
||||||
|
if (argc < 2) {
|
||||||
|
std::cout << "No file was provided as input, quitting program" << std::endl;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
std::ifstream file(argv[1], std::ios::binary | std::ios::ate);
|
||||||
|
|
||||||
|
if (!file) {
|
||||||
|
std::cout << "Invalid file was provided, quitting program" << std::endl;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
SDL_Window *window = nullptr;
|
||||||
|
SDL_Renderer *renderer = nullptr;
|
||||||
|
SDL_Texture *texture = nullptr;
|
||||||
|
|
||||||
|
char title[64];
|
||||||
|
sprintf(title, "Chip-8 v%d.%d [%s]", VERSION_MAJOR, VERSION_MINOR, argv[1]);
|
||||||
|
|
||||||
|
Chip8 chip8;
|
||||||
|
|
||||||
|
memcpy(chip8.memory, font, sizeof(font));
|
||||||
|
memset(chip8.pixels, 0xFF000000, sizeof(chip8.pixels));
|
||||||
|
memset(chip8.stack, 0, sizeof(chip8.stack));
|
||||||
|
memset(chip8.V, 0, sizeof(chip8.V));
|
||||||
|
|
||||||
|
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
|
||||||
|
std::cout << "Video init failed";
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
srand(time(0));
|
||||||
|
|
||||||
|
std::streamsize size = file.tellg();
|
||||||
|
file.seekg(0, std::ios::beg);
|
||||||
|
|
||||||
|
file.read(reinterpret_cast<char *>(&chip8.memory) + 0x200, size);
|
||||||
|
|
||||||
|
window = SDL_CreateWindow(title, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 320, SDL_WINDOW_SHOWN);
|
||||||
|
renderer = SDL_CreateRenderer(window, 0, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
|
||||||
|
texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_BGRA8888, SDL_TEXTUREACCESS_STATIC, 64, 32);
|
||||||
|
|
||||||
|
bool running = true;
|
||||||
|
|
||||||
|
while (running) {
|
||||||
|
emulate(chip8, window);
|
||||||
|
|
||||||
|
if (chip8.draw) {
|
||||||
|
SDL_UpdateTexture(texture, 0, chip8.pixels, 64 * sizeof(uint32_t));
|
||||||
|
SDL_RenderCopy(renderer, texture, 0, 0);
|
||||||
|
SDL_RenderPresent(renderer);
|
||||||
|
|
||||||
|
chip8.draw = false;
|
||||||
|
}
|
||||||
|
poll_events(window, &running);
|
||||||
|
}
|
||||||
|
|
||||||
|
SDL_DestroyTexture(texture);
|
||||||
|
SDL_DestroyRenderer(renderer);
|
||||||
|
SDL_DestroyWindow(window);
|
||||||
|
SDL_Quit();
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
@@ -0,0 +1,2 @@
|
|||||||
|
#define VERSION_MAJOR @chip8_VERSION_MAJOR@
|
||||||
|
#define VERSION_MINOR @chip8_VERSION_MINOR@
|
||||||
Reference in New Issue
Block a user