add installation and vm notes

doc/install.md

@@ -0,0 +1,40 @@
+# Spingle Installation
+
+To compile Spingle, you will need:
+
+- Any reasonably new C compiler
+- pkg-config (any version)
+- CMake (>=3.14)
+- SDL2 (>=2.0.0)
+- OpenGL (1.0 or newer, 1.3 for shaders)
+
+For FLAC support:
+
+- libFLAC (>=1.3.3)
+
+For Ogg Vorbis support:
+
+- libvorbis (>=1.3.6)
+- libvorbisfile (>=1.3.6)
+- libogg (>=1.3.4)
+
+For Ogg Opus support:
+
+- libopus (>=1.3.1)
+- libopusfile (>=0.11)
+- libogg (>=1.3.4)
+
+For tracker music support:
+
+- libmikmod (>=3.3.11)
+
+To generate build files:
+
+```
+mkdir build
+cd build
+cmake .. -DCMAKE_BUILD_TYPE=Release
+```
+
+After that, use the generated build files to compile. (For Makefiles simply run
+`make`, for Ninja use `ninja`, etc.)

doc/vm.md

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+## Spingle VM
+
+### `OP_DONE`, `OP_RETURN`
+
+Sets the 3 return globals to the 3 globals pointed to by A and returns control
+to the statement pointed to by the top of the stack by restoring locals and
+jumping.
+
+### `OP_MUL_F`, `OP_DIV_F`, `OP_ADD_F`, `OP_SUB_F`
+
+
+
+### `OP_MUL_V`
+### `OP_MUL_FV`
+### `OP_MUL_VF`
+### `OP_ADD_V`
+### `OP_SUB_V`
+### `OP_EQ_F`
+### `OP_EQ_V`
+### `OP_EQ_S`
+### `OP_EQ_E`
+### `OP_EQ_FNC`
+### `OP_NE_F`
+### `OP_NE_V`
+### `OP_NE_S`
+### `OP_NE_E`
+### `OP_NE_FNC`
+### `OP_LE`
+### `OP_GE`
+### `OP_LT`
+### `OP_GT`
+### `OP_LOAD_F`
+### `OP_LOAD_V`
+### `OP_LOAD_S`
+### `OP_LOAD_ENT`
+### `OP_LOAD_FLD`
+### `OP_LOAD_FNC`
+### `OP_ADDRESS`
+### `OP_STORE_F`
+### `OP_STORE_V`
+### `OP_STORE_S`
+### `OP_STORE_ENT`
+### `OP_STORE_FLD`
+### `OP_STORE_FNC`
+### `OP_STOREP_F`
+### `OP_STOREP_V`
+### `OP_STOREP_S`
+### `OP_STOREP_ENT`
+### `OP_STOREP_FLD`
+### `OP_STOREP_FNC`
+### `OP_NOT_F`
+### `OP_NOT_V`
+### `OP_NOT_S`
+### `OP_NOT_ENT`
+### `OP_NOT_FNC`
+### `OP_IF`
+### `OP_IFNOT`
+### `OP_CALL0`
+### `OP_CALL1`
+### `OP_CALL2`
+### `OP_CALL3`
+### `OP_CALL4`
+### `OP_CALL5`
+### `OP_CALL6`
+### `OP_CALL7`
+### `OP_CALL8`
+### `OP_STATE`
+### `OP_GOTO`
+### `OP_AND`
+### `OP_OR`
+### `OP_BITAND`
+### `OP_BITOR`