README.md

@@ -3,8 +3,7 @@ Machine code interpreter written in pure C. Can execute programs up to 1 MEGABYT
 
 ## Building
 1. Install [cbuild](https://timerix.ddns.net:3322/Timerix/cbuild.git)
-2. Install [SDL3](https://github.com/libsdl-org/SDL) and [SDL3_image](https://github.com/libsdl-org/SDL_image) from package manager or source.
-3.  ```sh
+2.  ```sh
     cbuild build_exec_dbg
     ```
 
@@ -26,10 +25,10 @@ Machine code interpreter written in pure C. Can execute programs up to 1 MEGABYT
 ### Registers
 | code | name | size (bits) |
 |------|------|-------------|
-| 01 | ax | 32 |
-| 02 | bx | 32 |
-| 03 | cx | 32 |
-| 04 | dx | 32 |
+| 00 | ax | 32 |
+| 01 | bx | 32 |
+| 02 | cx | 32 |
+| 03 | dx | 32 |
 
 ### System functions
 To call a system function you need to push values to registers and write `SYS` opcode. The return value of a function will will be avaliable in `ax` after call.

project.config

@@ -32,13 +32,12 @@ case "$OS" in
     WINDOWS)
         EXEC_FILE="$PROJECT.exe"
         SHARED_LIB_FILE="$PROJECT.dll"
-        LINKER_LIBS="-lSDL3_image -lSDL3"
+        # example: "-I./"
         INCLUDE=""
         ;;
     LINUX)
         EXEC_FILE="$PROJECT"
         SHARED_LIB_FILE="$PROJECT.so"
-        LINKER_LIBS="-lSDL3_image -lSDL3"
         INCLUDE=""
         ;;
     *)

src/VM/VM.c

@@ -72,7 +72,7 @@ i32 VM_boot(VM* vm){
     }
 
     // exit code of the program should be in ax register
-    return vm->registers.a.u32v0;
+    return vm->ax.i32v;
 }
 
 bool VM_dataRead(VM* vm, void* dst, size_t pos, size_t size){