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1
Makefile
1
Makefile
@ -19,7 +19,6 @@ ls7emulator:
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cd ../bin
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cd ../bin
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mv ../src/ls7emulator ./
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mv ../src/ls7emulator ./
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strip ls7emulator
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strip ls7emulator
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cp ../src/assets/font.ttf ./
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install: ls7emulator
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install: ls7emulator
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mkdir -p $(PREFIX)/bin
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mkdir -p $(PREFIX)/bin
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39
README.md
39
README.md
@ -1,33 +1,52 @@
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# LS7-Emulator
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# LS7-Emulator
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Emulator for the LS7 Computer written in C
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Emulator for the LS7 Computer written in C and SDL
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# ToDo
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## ToDo
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This is very much ~in progress~
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- Adjust cpu.c for 65c02 Instructions
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- Adjust cpu.c for 65c02 Instructions
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- video.c 16 color support
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- video.c accent color support
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- video.c accent color support
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- cpu snapshot load/save
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- CPU snapshot load/save
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- Emulate VIA
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- Build-in memory monitor - like wozmon
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- Optimize video.c
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# Usage
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## Usage
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Start the Program with `ls7emulator [OPTIONS]... [FILE]`.
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Start the Program with `ls7emulator [OPTIONS] ... [FILE]`.
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A file has to be specified and **must** be exactly 16k in size.
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A file has to be specified and **must** be exactly 16k in size.
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Preferably a 65c02 program.
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Preferably a 65c02 program.
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# OPTIONS
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## Options
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Command-line options can be revealed by passing `--help` when starting the program.
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## Hotkeys
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# Hotkeys
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I'm still changing stuff, so this is probably bound to change.
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# Building
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- F1 -> Exit emulator
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- F2 -> Show hotkey help
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- F3 -> Show debug menu
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- F4 -> Halt CPU
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- F5 -> Reset CPU
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- F6 ->
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- F7 ->
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- F8 -> Single step CPU (if in singlestep mode)
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- F9 -> Save computer snapshot
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- F10 -> Show computer memory map
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- F11 -> Send CPU NMI
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- F12 -> Send CPU IRQ
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## Building
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The Program is so small, that I won't distribute a binary package.
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The Program is so small, that I won't distribute a binary package.
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The `Makefile` provides the build utilities. Simply build it in a Unix based terminal with
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The `Makefile` provides the build utilities. Simply build it in a Unix based terminal with
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`make` and to install it in /usr/bin `make install` as root
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`make` and to install it in /usr/bin `make install` as root
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# Dependencies
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## Build dependencies
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- gcc
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- gcc
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- sdl2
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- sdl2
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Binary file not shown.
35
src/config.h
35
src/config.h
@ -10,15 +10,14 @@
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#define ROMLOC 0xC000 /* ROM Page Location */
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#define ROMLOC 0xC000 /* ROM Page Location */
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#define BACKCOLOR sfBlack
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#define BACKCOLOR sfBlack
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#define FPS 60
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#define SCREEN_WIDTH 768
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#define SCREEN_WIDTH 786
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#define SCREEN_HEIGHT 512
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#define SCREEN_HEIGHT 512
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#define SDL_X_SIZE 786
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#define SDL_X_SIZE 768
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#define SDL_Y_SIZE 786
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#define SDL_Y_SIZE 512
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#define PREAMBLE "LS7 Emulator by Gabriel Weingardt.\nLicense: GPL v.3+\n\n"
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#define PREAMBLE "LS7 Emulator by Gabriel Weingardt.\nLicense: GPL v.3+\n\n"
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#define HELP "Usage: LS7Emulator [options] file\n\n\
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#define HELP "Usage: LS7Emulator [options] ... [file]\n\n\
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Options: Type Default Desc\n\
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Options: Type Default Desc\n\
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--help Show this menu\n\
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--help Show this menu\n\
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--help-keys Show emulator key functions\n\
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--help-keys Show emulator key functions\n\
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@ -27,18 +26,20 @@ Options: Type Default Desc\n\
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--singlestep Enable singlestepping with the 'F8' key\n\
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--singlestep Enable singlestepping with the 'F8' key\n\
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--clocksteps [int] 1 Set the clock cycles cycled by a singlestep\n\
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--clocksteps [int] 1 Set the clock cycles cycled by a singlestep\n\
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--snapshot [string] Import a CPU snapshot\n\
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--snapshot [string] Import a CPU snapshot\n\
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--fps [float] 30 Set the SDL FPS rate\n\
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--enable-reload Reload the binary file when CPU is reset\n\
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\n"
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\n"
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#define HELPKEYS "\
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#define HELPKEYS "\
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F1 Exit emulator\n\
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F1 Exit emulator\n\
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F2 Show Key Help\n\
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F2 Show Key Help\n\
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F3 Show Debug Menu\n\
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F3 Show Debug Menu\n\
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F4 Halt CPU\n\
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F4 Halt CPU\n\
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F5 Reset CPU\n\
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F5 Reset CPU\n\
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F6 Scale--\n\
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F6 Scale--\n\
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F7 Scale++\n\
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F7 Scale++\n\
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F8 Single step CPU\n\
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F8 Single step CPU\n\
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F9 Save CPU snapshot\n\
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F9 Save CPU snapshot\n\
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F10 Load previous snapshot\n\
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F10 Show Computer Memory Map\n\
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F11 CPU NMI\n\
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F11 Send CPU NMI\n\
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F12 CPU IRQ\n\n"
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F12 Send CPU IRQ\n\n"
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@ -5,8 +5,9 @@
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*****************************************************/
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*****************************************************/
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#include <stdint.h>
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#include <stdint.h>
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#include "memory.h"
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extern void write6502(uint16_t, uint8_t);
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extern uint8_t read6502(uint16_t);
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//6502 defines
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//6502 defines
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#define FLAG_CARRY 0x01
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#define FLAG_CARRY 0x01
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12
src/events.c
12
src/events.c
@ -6,13 +6,19 @@ extern float displayScale;
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extern uint8_t halt;
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extern uint8_t halt;
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extern uint8_t showDebug;
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extern uint8_t showDebug;
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extern uint8_t showHelp;
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extern uint8_t showHelp;
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extern uint8_t displayMmap;
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extern uint8_t documentReload;
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extern uint32_t renderMemory[];
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extern int openFile();
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extern void resetSystem();
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extern void resetSystem();
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extern void irq6502();
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extern void irq6502();
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extern void nmi6502();
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extern void nmi6502();
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extern void step6502();
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extern void step6502();
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extern void updateRenderStates();
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extern void updateRenderStates();
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extern void scanKeyboard();
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extern void scanKeyboard();
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extern void clearScreen(uint32_t[], uint32_t);
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static SDL_Scancode currentKey = SDL_SCANCODE_UNKNOWN;
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static SDL_Scancode currentKey = SDL_SCANCODE_UNKNOWN;
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static SDL_Event event;
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static SDL_Event event;
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@ -43,14 +49,17 @@ void pollEvents(){
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break;
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break;
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case SDL_SCANCODE_F5: /* CPU Reset */
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case SDL_SCANCODE_F5: /* CPU Reset */
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if (documentReload) openFile();
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resetSystem();
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resetSystem();
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break;
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break;
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case SDL_SCANCODE_F6: /* Scale -- */
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case SDL_SCANCODE_F6: /* Scale -- */
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clearScreen(renderMemory, 0x000000FF);
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if (displayScale > 1) displayScale--;
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if (displayScale > 1) displayScale--;
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break;
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break;
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case SDL_SCANCODE_F7: /* Scale ++ */
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case SDL_SCANCODE_F7: /* Scale ++ */
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clearScreen(renderMemory, 0x000000FF);
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displayScale++;
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displayScale++;
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break;
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break;
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@ -61,7 +70,8 @@ void pollEvents(){
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case SDL_SCANCODE_F9: /* CPU Save Snapshot */
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case SDL_SCANCODE_F9: /* CPU Save Snapshot */
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break;
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break;
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case SDL_SCANCODE_F10: /* CPU Load recent or given snapshot */
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case SDL_SCANCODE_F10: /* Show CPU Memory Map */
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displayMmap = !displayMmap;
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break;
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break;
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case SDL_SCANCODE_F11: /* CPU NMI */
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case SDL_SCANCODE_F11: /* CPU NMI */
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106
src/font.h
Normal file
106
src/font.h
Normal file
@ -0,0 +1,106 @@
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// /home/xmac/Projects/Assembly/Kernel/assets/thin.bmf
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// 8x8 Character Size
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#include <stdint.h>
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#define FONT_WIDTH 8
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#define FONT_HEIGHT 8
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const uint8_t typeface[] = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //Char 20 ; 32
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0x10, 0x10, 0x10, 0x10, 0x10, 0x00, 0x10, 0x00, //Char 21 ; 33
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0x28, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //Char 22 ; 34
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0x24, 0x24, 0x7E, 0x24, 0x7E, 0x24, 0x24, 0x00, //Char 23 ; 35
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0x10, 0x3C, 0x40, 0x38, 0x04, 0x78, 0x10, 0x00, //Char 24 ; 36
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0x44, 0x48, 0x08, 0x10, 0x20, 0x24, 0x44, 0x00, //Char 25 ; 37
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0x10, 0x28, 0x10, 0x34, 0x58, 0x48, 0x34, 0x00, //Char 26 ; 38
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0x20, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //Char 27 ; 39
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0x18, 0x20, 0x40, 0x40, 0x40, 0x20, 0x18, 0x00, //Char 28 ; 40
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0x18, 0x04, 0x02, 0x02, 0x02, 0x04, 0x18, 0x00, //Char 29 ; 41
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0x48, 0x30, 0x48, 0x00, 0x00, 0x00, 0x00, 0x00, //Char 2A ; 42
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0x00, 0x00, 0x10, 0x10, 0x7C, 0x10, 0x10, 0x00, //Char 2B ; 43
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0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10, //Char 2C ; 44
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0x00, 0x00, 0x00, 0x00, 0x7C, 0x00, 0x00, 0x00, //Char 2D ; 45
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0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00, //Char 2E ; 46
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0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, //Char 2F ; 47
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0x38, 0x44, 0x4C, 0x54, 0x64, 0x44, 0x38, 0x00, //Char 30 ; 48
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0x10, 0x30, 0x10, 0x10, 0x10, 0x10, 0x7C, 0x00, //Char 31 ; 49
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0x38, 0x44, 0x04, 0x18, 0x20, 0x40, 0x7C, 0x00, //Char 32 ; 50
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0x38, 0x44, 0x04, 0x18, 0x04, 0x44, 0x38, 0x00, //Char 33 ; 51
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0x0C, 0x14, 0x24, 0x44, 0x7C, 0x04, 0x04, 0x00, //Char 34 ; 52
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0x7C, 0x40, 0x78, 0x04, 0x04, 0x44, 0x38, 0x00, //Char 35 ; 53
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0x18, 0x20, 0x40, 0x78, 0x44, 0x44, 0x38, 0x00, //Char 36 ; 54
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0x7C, 0x44, 0x04, 0x08, 0x10, 0x10, 0x10, 0x00, //Char 37 ; 55
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0x38, 0x44, 0x44, 0x38, 0x44, 0x44, 0x38, 0x00, //Char 38 ; 56
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0x38, 0x44, 0x44, 0x3C, 0x04, 0x08, 0x30, 0x00, //Char 39 ; 57
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0x00, 0x10, 0x10, 0x00, 0x00, 0x10, 0x10, 0x00, //Char 3A ; 58
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0x00, 0x10, 0x10, 0x00, 0x00, 0x10, 0x10, 0x10, //Char 3B ; 59
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0x08, 0x10, 0x20, 0x40, 0x20, 0x10, 0x08, 0x00, //Char 3C ; 60
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0x00, 0x00, 0x7C, 0x00, 0x00, 0x7C, 0x00, 0x00, //Char 3D ; 61
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0x20, 0x10, 0x08, 0x04, 0x08, 0x10, 0x20, 0x00, //Char 3E ; 62
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0x38, 0x44, 0x04, 0x08, 0x10, 0x00, 0x10, 0x00, //Char 3F ; 63
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0x78, 0x84, 0xB4, 0xBC, 0x80, 0x80, 0x7C, 0x00, //Char 40 ; 64
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0x38, 0x44, 0x7C, 0x44, 0x44, 0x44, 0x44, 0x00, //Char 41 ; 65
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0x78, 0x44, 0x78, 0x44, 0x44, 0x44, 0x78, 0x00, //Char 42 ; 66
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0x38, 0x44, 0x40, 0x40, 0x40, 0x44, 0x38, 0x00, //Char 43 ; 67
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0x78, 0x44, 0x44, 0x44, 0x44, 0x44, 0x78, 0x00, //Char 44 ; 68
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||||||
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0x7C, 0x40, 0x70, 0x40, 0x40, 0x40, 0x7C, 0x00, //Char 45 ; 69
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||||||
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0x7C, 0x40, 0x70, 0x40, 0x40, 0x40, 0x40, 0x00, //Char 46 ; 70
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||||||
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0x3C, 0x40, 0x5C, 0x44, 0x44, 0x44, 0x38, 0x00, //Char 47 ; 71
|
||||||
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0x44, 0x44, 0x7C, 0x44, 0x44, 0x44, 0x44, 0x00, //Char 48 ; 72
|
||||||
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0x38, 0x10, 0x10, 0x10, 0x10, 0x10, 0x38, 0x00, //Char 49 ; 73
|
||||||
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0x04, 0x04, 0x04, 0x04, 0x04, 0x44, 0x38, 0x00, //Char 4A ; 74
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||||||
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0x44, 0x48, 0x70, 0x48, 0x44, 0x44, 0x44, 0x00, //Char 4B ; 75
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||||||
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0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x7C, 0x00, //Char 4C ; 76
|
||||||
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0x44, 0x6C, 0x54, 0x44, 0x44, 0x44, 0x44, 0x00, //Char 4D ; 77
|
||||||
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0x44, 0x64, 0x54, 0x4C, 0x44, 0x44, 0x44, 0x00, //Char 4E ; 78
|
||||||
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0x38, 0x44, 0x44, 0x44, 0x44, 0x44, 0x38, 0x00, //Char 4F ; 79
|
||||||
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0x78, 0x44, 0x78, 0x40, 0x40, 0x40, 0x40, 0x00, //Char 50 ; 80
|
||||||
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0x38, 0x44, 0x44, 0x44, 0x44, 0x48, 0x34, 0x00, //Char 51 ; 81
|
||||||
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0x78, 0x44, 0x78, 0x44, 0x44, 0x44, 0x44, 0x00, //Char 52 ; 82
|
||||||
|
0x3C, 0x40, 0x38, 0x04, 0x04, 0x44, 0x38, 0x00, //Char 53 ; 83
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||||||
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0x7C, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00, //Char 54 ; 84
|
||||||
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0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x38, 0x00, //Char 55 ; 85
|
||||||
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0x44, 0x44, 0x44, 0x44, 0x28, 0x28, 0x10, 0x00, //Char 56 ; 86
|
||||||
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0x44, 0x44, 0x44, 0x44, 0x54, 0x6C, 0x44, 0x00, //Char 57 ; 87
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||||||
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0x44, 0x28, 0x10, 0x28, 0x44, 0x44, 0x44, 0x00, //Char 58 ; 88
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||||||
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0x44, 0x28, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00, //Char 59 ; 89
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||||||
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0x7C, 0x04, 0x08, 0x10, 0x20, 0x40, 0x7C, 0x00, //Char 5A ; 90
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||||||
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0x3C, 0x20, 0x20, 0x20, 0x20, 0x20, 0x3C, 0x00, //Char 5B ; 91
|
||||||
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0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01, //Char 5C ; 92
|
||||||
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0x3C, 0x04, 0x04, 0x04, 0x04, 0x04, 0x3C, 0x00, //Char 5D ; 93
|
||||||
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0x10, 0x28, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00, //Char 5E ; 94
|
||||||
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7C, //Char 5F ; 95
|
||||||
|
0x20, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //Char 60 ; 96
|
||||||
|
0x00, 0x00, 0x38, 0x04, 0x3C, 0x44, 0x3C, 0x00, //Char 61 ; 97
|
||||||
|
0x40, 0x40, 0x58, 0x64, 0x44, 0x44, 0x78, 0x00, //Char 62 ; 98
|
||||||
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0x00, 0x00, 0x38, 0x44, 0x40, 0x44, 0x38, 0x00, //Char 63 ; 99
|
||||||
|
0x04, 0x04, 0x34, 0x4C, 0x44, 0x44, 0x3C, 0x00, //Char 64 ; 100
|
||||||
|
0x00, 0x00, 0x38, 0x44, 0x7C, 0x40, 0x3C, 0x00, //Char 65 ; 101
|
||||||
|
0x18, 0x20, 0x78, 0x20, 0x20, 0x20, 0x20, 0x00, //Char 66 ; 102
|
||||||
|
0x00, 0x00, 0x3C, 0x44, 0x44, 0x3C, 0x04, 0x78, //Char 67 ; 103
|
||||||
|
0x40, 0x40, 0x58, 0x64, 0x44, 0x44, 0x44, 0x00, //Char 68 ; 104
|
||||||
|
0x10, 0x00, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00, //Char 69 ; 105
|
||||||
|
0x04, 0x00, 0x04, 0x04, 0x04, 0x44, 0x44, 0x38, //Char 6A ; 106
|
||||||
|
0x40, 0x40, 0x48, 0x50, 0x60, 0x50, 0x48, 0x00, //Char 6B ; 107
|
||||||
|
0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x10, 0x00, //Char 6C ; 108
|
||||||
|
0x00, 0x00, 0x68, 0x54, 0x54, 0x44, 0x44, 0x00, //Char 6D ; 109
|
||||||
|
0x00, 0x00, 0x78, 0x44, 0x44, 0x44, 0x44, 0x00, //Char 6E ; 110
|
||||||
|
0x00, 0x00, 0x38, 0x44, 0x44, 0x44, 0x38, 0x00, //Char 6F ; 111
|
||||||
|
0x00, 0x00, 0x58, 0x64, 0x44, 0x78, 0x40, 0x40, //Char 70 ; 112
|
||||||
|
0x00, 0x00, 0x34, 0x4C, 0x44, 0x3C, 0x04, 0x04, //Char 71 ; 113
|
||||||
|
0x00, 0x00, 0x58, 0x64, 0x40, 0x40, 0x40, 0x00, //Char 72 ; 114
|
||||||
|
0x00, 0x00, 0x3C, 0x40, 0x38, 0x04, 0x78, 0x00, //Char 73 ; 115
|
||||||
|
0x10, 0x38, 0x10, 0x10, 0x10, 0x10, 0x08, 0x00, //Char 74 ; 116
|
||||||
|
0x00, 0x00, 0x44, 0x44, 0x44, 0x44, 0x3C, 0x00, //Char 75 ; 117
|
||||||
|
0x00, 0x00, 0x44, 0x44, 0x44, 0x28, 0x10, 0x00, //Char 76 ; 118
|
||||||
|
0x00, 0x00, 0x44, 0x44, 0x54, 0x54, 0x3C, 0x00, //Char 77 ; 119
|
||||||
|
0x00, 0x00, 0x44, 0x28, 0x10, 0x28, 0x44, 0x00, //Char 78 ; 120
|
||||||
|
0x00, 0x00, 0x44, 0x44, 0x44, 0x3C, 0x04, 0x78, //Char 79 ; 121
|
||||||
|
0x00, 0x00, 0x7C, 0x08, 0x10, 0x20, 0x7C, 0x00, //Char 7A ; 122
|
||||||
|
0x18, 0x20, 0x20, 0x40, 0x20, 0x20, 0x18, 0x00, //Char 7B ; 123
|
||||||
|
0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, //Char 7C ; 124
|
||||||
|
0x18, 0x04, 0x04, 0x02, 0x04, 0x04, 0x18, 0x00, //Char 7D ; 125
|
||||||
|
0x32, 0x4C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //Char 7E ; 126
|
||||||
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //Char 7F ; 127
|
||||||
|
};
|
||||||
106
src/main.c
106
src/main.c
@ -1,3 +1,4 @@
|
|||||||
|
#include <SDL2/SDL_render.h>
|
||||||
#include <stdio.h>
|
#include <stdio.h>
|
||||||
#include <stdint.h>
|
#include <stdint.h>
|
||||||
#include <stdlib.h>
|
#include <stdlib.h>
|
||||||
@ -25,19 +26,23 @@ uint8_t halt = 0;
|
|||||||
uint8_t showHelp = 0;
|
uint8_t showHelp = 0;
|
||||||
uint8_t showDebug = 0;
|
uint8_t showDebug = 0;
|
||||||
uint8_t fpsCount = 0;
|
uint8_t fpsCount = 0;
|
||||||
|
uint8_t displayMmap = 0;
|
||||||
|
uint8_t documentReload = 0;
|
||||||
|
|
||||||
uint8_t fpsStore;
|
uint8_t fpsStore = 60;
|
||||||
|
uint8_t FPS = 30;
|
||||||
uint8_t cpuHealth;
|
uint8_t cpuHealth;
|
||||||
|
|
||||||
unsigned long cpuTicks = 0;
|
unsigned long cpuTicks = 0;
|
||||||
unsigned long tickTrigger = 0;
|
unsigned long tickTrigger = 0;
|
||||||
unsigned long renderTrigger = 0;
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
char debugString[255];
|
char debugString[512];
|
||||||
|
char snapshotFile[32];
|
||||||
|
char *inputFile;
|
||||||
|
|
||||||
int openFile(const char *inputFile){
|
int openFile(){
|
||||||
FILE *file = fopen(inputFile, "rb");
|
FILE *file = fopen(inputFile, "rb");
|
||||||
int retCode = 0;
|
int retCode = 0;
|
||||||
|
|
||||||
@ -60,32 +65,23 @@ void resetSystem(){
|
|||||||
reset6502();
|
reset6502();
|
||||||
}
|
}
|
||||||
|
|
||||||
void writeHelp(int type){
|
|
||||||
if (!type) printf(HELP);
|
|
||||||
else printf(HELPKEYS);
|
|
||||||
|
|
||||||
exit(EXIT_SUCCESS);
|
|
||||||
}
|
|
||||||
|
|
||||||
void writePreamble() {
|
|
||||||
printf(PREAMBLE);
|
|
||||||
}
|
|
||||||
|
|
||||||
void fetchArgs(int argc, char *argv[]){
|
void fetchArgs(int argc, char *argv[]){
|
||||||
writePreamble();
|
printf(PREAMBLE);
|
||||||
|
|
||||||
for (int i = 1; i < argc; i++) {
|
for (int i = 1; i < argc; i++) {
|
||||||
if (!strcmp(argv[i], "--help")) writeHelp(0);
|
if (!strcmp(argv[i], "--help")) printf(HELP);
|
||||||
else if (!strcmp(argv[i], "--help-keys")) writeHelp(1);
|
else if (!strcmp(argv[i], "--help-keys")) printf(HELPKEYS);
|
||||||
else if (!strcmp(argv[i], "--cpuspeed")) cpuSpeed = atoi(argv[++i]);
|
else if (!strcmp(argv[i], "--cpuspeed")) cpuSpeed = atoi(argv[++i]);
|
||||||
else if (!strcmp(argv[i], "--scale")) displayScale = atof(argv[++i]);
|
else if (!strcmp(argv[i], "--scale")) displayScale = atof(argv[++i]);
|
||||||
else if (!strcmp(argv[i], "--singlestep")) singleStep = 1;
|
else if (!strcmp(argv[i], "--singlestep")) singleStep = 1;
|
||||||
else if (!strcmp(argv[i], "--clocksteps")) clockSteps = atoi(argv[++i]);
|
else if (!strcmp(argv[i], "--clocksteps")) clockSteps = atoi(argv[++i]);
|
||||||
//else if (!strcmp(argv[i], "--snapshot")) snapshotFile = &argv[i];
|
//else if (!strcmp(argv[i], "--snapshot")) snapshotFile = &argv[i];
|
||||||
|
else if (!strcmp(argv[i], "--fps")) FPS = atoi(argv[++i]);
|
||||||
|
else if (!strcmp(argv[i], "--enable-reload")) documentReload = 1;
|
||||||
else {
|
else {
|
||||||
if (openFile(argv[i])){
|
inputFile = argv[i];
|
||||||
printf("Unknown parameter or file '%s'\nTry '--help' for help\n", argv[i]);
|
if (openFile()){
|
||||||
|
printf("%s: Unknown parameter or file '%s'\nTry '--help' for help\n", argv[0], argv[i]);
|
||||||
exit(EXIT_FAILURE);
|
exit(EXIT_FAILURE);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
@ -100,15 +96,14 @@ int main(int argc, char *argv[]){
|
|||||||
resetSystem();
|
resetSystem();
|
||||||
|
|
||||||
while (1){
|
while (1){
|
||||||
SDL_Delay(32);
|
SDL_Delay(1000.f / FPS);
|
||||||
pollEvents();
|
pollEvents();
|
||||||
|
|
||||||
fpsCount++;
|
fpsCount++;
|
||||||
|
|
||||||
updateVideo();
|
updateVideo();
|
||||||
|
|
||||||
if (!singleStep && !halt){
|
if (!singleStep && !halt){
|
||||||
for (int i = 0; i < (cpuSpeed / FPS) * 2; i++) {
|
for (int i = 0; i < ((float)cpuSpeed / (float)fpsStore); i++) {
|
||||||
step6502();
|
step6502();
|
||||||
cpuTicks++;
|
cpuTicks++;
|
||||||
}
|
}
|
||||||
@ -121,27 +116,60 @@ int main(int argc, char *argv[]){
|
|||||||
cpuHealth = (uint8_t)((cpuTicks / (float)cpuSpeed) * 100.);
|
cpuHealth = (uint8_t)((cpuTicks / (float)cpuSpeed) * 100.);
|
||||||
cpuTicks = 0;
|
cpuTicks = 0;
|
||||||
|
|
||||||
fpsStore = fpsCount;
|
fpsStore = fpsCount; fpsCount = 0;
|
||||||
fpsCount = 0;
|
|
||||||
|
/* Refresh entire video buffer */
|
||||||
|
videoModified = 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Redraw entire screen every X seconds */
|
|
||||||
//if ((unsigned)time(NULL) > renderTrigger + 0){
|
|
||||||
renderTrigger = (unsigned)time(NULL);
|
|
||||||
|
|
||||||
if (SDL_UpdateTexture(texture, NULL, renderMemory, (sizeof(uint32_t) * SDL_X_SIZE))) {
|
uint16_t vStack = 16;
|
||||||
fprintf(stderr, "Could not update SDL texture: %s.\n", SDL_GetError());
|
|
||||||
exit(EXIT_FAILURE);
|
if (halt) {
|
||||||
}
|
drawString("!CPU Haltet!", renderMemory,
|
||||||
if (SDL_RenderCopy(renderer, texture, NULL, NULL)) {
|
SDL_X_SIZE, 0x000000FF, time(NULL) % 2 ? 0xAAAAAAFF : 0xFFFFFFFF, 16, vStack, 2);
|
||||||
fprintf(stderr, "Could not display SDL texture: %s.\n", SDL_GetError());
|
|
||||||
exit(EXIT_FAILURE);
|
vStack += (FONT_HEIGHT * 2 * 2);
|
||||||
}
|
} if (showDebug){
|
||||||
SDL_RenderPresent(renderer);
|
sprintf(debugString, "LOADED BINARY: \"%s\"\nSCREENSIZE: %dx%d\nFPS: %d\nSCALE: %d", inputFile, SDL_X_SIZE, SDL_Y_SIZE, fpsStore, (int)displayScale);
|
||||||
//}
|
drawString(debugString, renderMemory,
|
||||||
|
SDL_X_SIZE, 0x000000FF, 0xAAAAAAFF, 16, vStack, 2);
|
||||||
|
|
||||||
|
vStack += (FONT_HEIGHT * 4 * 2);
|
||||||
|
|
||||||
|
sprintf(debugString, "CPU: %d%%", cpuHealth);
|
||||||
|
drawString(debugString, renderMemory,
|
||||||
|
SDL_X_SIZE, 0x000000FF, time(NULL) % 2 ? 0xAAAAAAFF : cpuHealth < 10 ?
|
||||||
|
0xFF0000FF : cpuHealth < 50 ? 0xFFFF00FF : 0xAAAAAAFF, 16, vStack, 2);
|
||||||
|
|
||||||
|
vStack += (FONT_HEIGHT * 2 * 2);
|
||||||
|
} if (displayMmap){
|
||||||
|
sprintf(debugString, "RAM: $%04X - $%04X\nROM: $%04X - $%04X\nVIAADDRS: $%04X\nKBDADDRS: $%04X\nVIDADDRS: $%04X", RAMLOC, RAMLOC + RAMSIZE, ROMLOC, ROMLOC + ROMSIZE, VIAADDRS, KBDADDRS, VIDADDRS);
|
||||||
|
drawString(debugString, renderMemory, SDL_X_SIZE, 0x000000FF, 0xAAAAAAFF, 16, vStack, 2);
|
||||||
|
|
||||||
|
vStack += (FONT_HEIGHT * 6 * 2);
|
||||||
|
} if (showHelp) {
|
||||||
|
drawString(HELPKEYS, renderMemory, SDL_X_SIZE, 0x000000FF, 0xAAAAAAFF, 16, vStack, 2);
|
||||||
|
|
||||||
|
vStack += (FONT_HEIGHT * 2 * 2);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
if (SDL_UpdateTexture(texture, NULL, renderMemory, (sizeof(uint32_t) * SDL_X_SIZE))) {
|
||||||
|
fprintf(stderr, "Could not update SDL texture: %s.\n", SDL_GetError());
|
||||||
|
exit(EXIT_FAILURE);
|
||||||
|
}
|
||||||
|
if (SDL_RenderCopy(renderer, texture, NULL, NULL)) {
|
||||||
|
fprintf(stderr, "Could not display SDL texture: %s.\n", SDL_GetError());
|
||||||
|
exit(EXIT_FAILURE);
|
||||||
|
}
|
||||||
|
|
||||||
|
SDL_RenderPresent(renderer);
|
||||||
}
|
}
|
||||||
|
|
||||||
return EXIT_SUCCESS;
|
return EXIT_SUCCESS;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|||||||
21
src/memory.c
21
src/memory.c
@ -1,5 +1,24 @@
|
|||||||
#include <stdint.h>
|
#include <stdint.h>
|
||||||
#include "memory.h"
|
#include "config.h"
|
||||||
|
|
||||||
|
extern void scanKeyboard();
|
||||||
|
extern void writeVideo();
|
||||||
|
extern uint8_t readVideo();
|
||||||
|
extern uint8_t videoX;
|
||||||
|
extern uint8_t videoY;
|
||||||
|
extern uint8_t videoMode;
|
||||||
|
extern uint8_t videoA;
|
||||||
|
|
||||||
|
static int8_t ram[RAMSIZE + 1];
|
||||||
|
static int8_t rom[ROMSIZE + 1];
|
||||||
|
|
||||||
|
static uint8_t systemRegister;
|
||||||
|
static uint8_t keyboardResult;
|
||||||
|
|
||||||
|
|
||||||
|
uint8_t read6502(uint16_t address);
|
||||||
|
void write6502(uint16_t address, uint8_t value);
|
||||||
|
|
||||||
|
|
||||||
uint8_t read6502(uint16_t address){
|
uint8_t read6502(uint16_t address){
|
||||||
switch (address){
|
switch (address){
|
||||||
|
|||||||
19
src/memory.h
19
src/memory.h
@ -1,19 +0,0 @@
|
|||||||
#include <stdint.h>
|
|
||||||
|
|
||||||
extern void scanKeyboard();
|
|
||||||
extern void writeVideo();
|
|
||||||
extern uint8_t readVideo();
|
|
||||||
extern uint8_t videoX;
|
|
||||||
extern uint8_t videoY;
|
|
||||||
extern uint8_t videoMode;
|
|
||||||
extern uint8_t videoA;
|
|
||||||
|
|
||||||
static int8_t ram[RAMSIZE + 1];
|
|
||||||
static int8_t rom[ROMSIZE + 1];
|
|
||||||
|
|
||||||
static uint8_t systemRegister;
|
|
||||||
static uint8_t keyboardResult;
|
|
||||||
|
|
||||||
|
|
||||||
uint8_t read6502(uint16_t address);
|
|
||||||
void write6502(uint16_t address, uint8_t value);
|
|
||||||
@ -1,5 +1,6 @@
|
|||||||
#include <SDL2/SDL.h>
|
#include <SDL2/SDL.h>
|
||||||
#include "config.h"
|
#include "config.h"
|
||||||
|
#include "font.h"
|
||||||
|
|
||||||
static SDL_Window *window;
|
static SDL_Window *window;
|
||||||
static SDL_Renderer *renderer;
|
static SDL_Renderer *renderer;
|
||||||
@ -44,3 +45,30 @@ void initWindow(){
|
|||||||
void clearScreen(uint32_t pixels[], uint32_t color){
|
void clearScreen(uint32_t pixels[], uint32_t color){
|
||||||
for (uint32_t i = 0; i < SDL_X_SIZE * SDL_Y_SIZE; i++) pixels[i] = color;
|
for (uint32_t i = 0; i < SDL_X_SIZE * SDL_Y_SIZE; i++) pixels[i] = color;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#define CHARMARGIN 0
|
||||||
|
void drawString(const char* string, uint32_t pixels[], uint16_t screenXsize, uint32_t foreground, uint32_t background, uint16_t x, uint16_t y, uint8_t scale){
|
||||||
|
uint16_t xCount = x;
|
||||||
|
uint16_t yCount = y;
|
||||||
|
|
||||||
|
for (int i = 0; string[i]; i++){
|
||||||
|
if (string[i] > 31 && string[i] < 127){
|
||||||
|
for (int _x = 0; _x < FONT_WIDTH * scale; _x++){
|
||||||
|
if (xCount + _x >= screenXsize){
|
||||||
|
xCount = x;
|
||||||
|
yCount += (FONT_HEIGHT + CHARMARGIN) * scale;
|
||||||
|
}
|
||||||
|
|
||||||
|
for (int _y = 0; _y < FONT_HEIGHT * scale; _y++){
|
||||||
|
uint8_t value = typeface[((string[i] - 32) * FONT_HEIGHT) + (_y / scale)] & (128 >> (_x / scale));
|
||||||
|
if (value && foreground != 0) pixels[(( yCount + _y) * screenXsize) + (xCount + _x)] = foreground;
|
||||||
|
else if (!value && background != 0) pixels[(( yCount + _y) * screenXsize) + (xCount + _x)] = background;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
xCount += (FONT_WIDTH + CHARMARGIN) * scale;
|
||||||
|
} else if (string[i] == '\n'){
|
||||||
|
xCount = x;
|
||||||
|
yCount += (FONT_HEIGHT + CHARMARGIN) * scale;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|||||||
131
src/video.c
131
src/video.c
@ -1,5 +1,9 @@
|
|||||||
#include <stdlib.h>
|
#include <stdlib.h>
|
||||||
#include <stdint.h>
|
#include <stdint.h>
|
||||||
|
#include "config.h"
|
||||||
|
|
||||||
|
#define HIGHCOLOR 255
|
||||||
|
#define LOWCOLOR 96
|
||||||
|
|
||||||
extern float displayScale;
|
extern float displayScale;
|
||||||
|
|
||||||
@ -13,24 +17,43 @@ uint8_t videoMode;
|
|||||||
uint8_t videoA;
|
uint8_t videoA;
|
||||||
|
|
||||||
/* Private Variables */
|
/* Private Variables */
|
||||||
static uint8_t videoRow;
|
|
||||||
static uint8_t videoValue;
|
static uint8_t videoValue;
|
||||||
static uint8_t videoColorValue;
|
static uint8_t videoColorValue;
|
||||||
|
|
||||||
static uint32_t videoColorIndex[] = {
|
static uint32_t videoColorIndex[16];
|
||||||
0x000000FF,
|
|
||||||
0xFF0000FF,
|
|
||||||
0x00FF00FF,
|
|
||||||
0xFFFF00FF,
|
|
||||||
0x0000FFFF,
|
|
||||||
0xFF00FFFF,
|
|
||||||
0x00FFFFFF,
|
|
||||||
0xFFFFFFFF
|
|
||||||
};
|
|
||||||
static uint8_t videoMemory[0x8000];
|
static uint8_t videoMemory[0x8000];
|
||||||
static uint32_t renderMemory[(SDL_X_SIZE * SDL_Y_SIZE)];
|
uint32_t renderMemory[(SDL_X_SIZE * SDL_Y_SIZE)];
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
void updatePalette(){
|
||||||
|
uint8_t accentColors = videoMode & 0b11101110;
|
||||||
|
for (uint8_t i = 0; i < 16; i++){
|
||||||
|
uint32_t rawColor =
|
||||||
|
((i & 0b1) ?
|
||||||
|
HIGHCOLOR - (i & 0x8 ? 0 : LOWCOLOR) : 0) << 24 |
|
||||||
|
|
||||||
|
(((i & 0b10) ?
|
||||||
|
HIGHCOLOR - (i & 0x8 ? 0 : LOWCOLOR) : 0) << 16) |
|
||||||
|
|
||||||
|
(((i & 0b100) ?
|
||||||
|
HIGHCOLOR - (i & 0x8 ? 0 : LOWCOLOR) : 0) << 8) |
|
||||||
|
|
||||||
|
0x000000FF;
|
||||||
|
|
||||||
|
videoColorIndex[i] = rawColor;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void initVideo(){
|
||||||
|
videoModified = 1;
|
||||||
|
videoMode = 0x01;
|
||||||
|
updatePalette();
|
||||||
|
|
||||||
|
/* Fill VRAM with random values, just for fun */
|
||||||
|
for (int i = 0; i < 0x8000; i++) videoMemory[i] = rand();
|
||||||
|
}
|
||||||
|
|
||||||
void writeVideo(){
|
void writeVideo(){
|
||||||
videoMemory[videoX + (videoY * 128)] = videoA;
|
videoMemory[videoX + (videoY * 128)] = videoA;
|
||||||
videoModified = 1;
|
videoModified = 1;
|
||||||
@ -40,63 +63,55 @@ uint8_t readVideo(){
|
|||||||
return videoMemory[videoX + (videoY * 128)];
|
return videoMemory[videoX + (videoY * 128)];
|
||||||
}
|
}
|
||||||
|
|
||||||
void initVideo(){
|
void setPixels(uint8_t x, uint8_t y){
|
||||||
videoModified = 1;
|
/* Check for Text or Graphics Mode */
|
||||||
videoMode = 0x01;
|
if ((videoMode & 0x01) == 0){
|
||||||
|
/*
|
||||||
|
* Text Address Format
|
||||||
|
* 0bRRR1111AAAAAAAA
|
||||||
|
*
|
||||||
|
* R = row pins
|
||||||
|
* A = address
|
||||||
|
*/
|
||||||
|
|
||||||
for (int i = 0; i < 0x8000; i++) videoMemory[i] = rand();
|
/* Get text index value */
|
||||||
|
videoValue = videoMemory[(((y & 0xF8) >> 3) << 7) | x];
|
||||||
|
|
||||||
|
/* Index the value in font location */
|
||||||
|
videoValue = videoMemory[((y & 0x7) | 0b1111000) + (videoValue * 128)];
|
||||||
|
videoColorValue = videoMemory[(((y & 0xF8) >> 3) << 7) + (x | 0x40)];
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
videoValue = videoMemory[(y * 128) + x];
|
||||||
|
videoColorValue = videoMemory[(y * 128) + (x | 0x40)];
|
||||||
|
}
|
||||||
|
|
||||||
|
// Snipping out the upper 8 colors
|
||||||
|
// videoColorValue &= 0x77;
|
||||||
|
|
||||||
|
for (uint8_t i = 0; i < 8; i++){
|
||||||
|
if (displayScale == 1){
|
||||||
|
renderMemory[(y * SDL_X_SIZE) + ((x * 8) + i)] = (videoValue & (128 >> i)) ? videoColorIndex[((videoColorValue & 0xF0) >> 4)] : videoColorIndex[(videoColorValue & 0x0F)];
|
||||||
|
} else {
|
||||||
|
for (uint8_t _x = 0; _x < displayScale; _x++){
|
||||||
|
for (uint8_t _y = 0; _y < displayScale; _y++){
|
||||||
|
renderMemory[(((y * (int)displayScale) + _y) * SDL_X_SIZE) + ((((x * (int)displayScale) * 8) + (i * (int)displayScale)) + _x)] = (videoValue & (128 >> i)) ? videoColorIndex[((videoColorValue & 0xF0) >> 4)] : videoColorIndex[(videoColorValue & 0x0F)];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
void updateVideo(){
|
void updateVideo(){
|
||||||
if (videoModified){
|
if (videoModified){
|
||||||
//sfVertexArray_clear(renderArray);
|
//sfVertexArray_clear(renderArray);
|
||||||
|
|
||||||
for (uint8_t y = 0; y < 255; y++){
|
for (uint16_t y = 0; y < 256; y++){
|
||||||
videoRow = (int8_t)(y & 0x7);
|
|
||||||
|
|
||||||
for (uint8_t x = 0; x < 48; x++){
|
for (uint8_t x = 0; x < 48; x++){
|
||||||
|
setPixels(x, (uint8_t)y);
|
||||||
if ((videoMode & 0x01) == 0){
|
|
||||||
/*
|
|
||||||
* Text Address Format
|
|
||||||
* 0bRRR1111AAAAAAAA
|
|
||||||
*
|
|
||||||
* R = row pins
|
|
||||||
* A = address
|
|
||||||
*/
|
|
||||||
|
|
||||||
// Get text index value
|
|
||||||
videoValue = videoMemory[(((y & 0xF8) >> 3) << 7) | x];
|
|
||||||
|
|
||||||
// Index the value in font location
|
|
||||||
videoValue = videoMemory[(videoRow | 0b1111000) + (videoValue * 128)];
|
|
||||||
videoColorValue = videoMemory[(((y & 0xF8) >> 3) << 7) + (x | 0x40)];
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
videoValue = videoMemory[(y * 128) + x];
|
|
||||||
videoColorValue = videoMemory[(y * 128) + (x | 0x40)];
|
|
||||||
}
|
|
||||||
|
|
||||||
// Snipping out the upper 8 colors
|
|
||||||
videoColorValue &= 0x77;
|
|
||||||
|
|
||||||
for (uint8_t i = 0; i < 8; i++){
|
|
||||||
if (displayScale == 1){
|
|
||||||
renderMemory[(y * SDL_X_SIZE) + ((x * 8) + i)] = (videoValue & (128 >> i)) ? videoColorIndex[((videoColorValue & 0xF0) >> 4)] : videoColorIndex[(videoColorValue & 0x0F)];
|
|
||||||
} else {
|
|
||||||
for (uint8_t _x = 0; _x < displayScale; _x++){
|
|
||||||
for (uint8_t _y = 0; _y < displayScale; _y++){
|
|
||||||
renderMemory[(((y * (int)displayScale) + _y) * SDL_X_SIZE) + ((((x * (int)displayScale) * 8) + (i * (int)displayScale)) + _x)] = (videoValue & (128 >> i)) ? videoColorIndex[((videoColorValue & 0xF0) >> 4)] : videoColorIndex[(videoColorValue & 0x0F)];
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
videoModified = 0;
|
videoModified = 0;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user