diff --git a/src/userland/buffersTests/main.c b/src/userland/buffersTests/main.c
index 8cb66ad..a951552 100644
--- a/src/userland/buffersTests/main.c
+++ b/src/userland/buffersTests/main.c
@@ -1,9 +1,113 @@
 #include <hlib.h>
 
-#define GET_LENGTH(type, size) (1+size) 
+// see https://github.com/msgpack/msgpack/blob/master/spec.md
 
-#define TEST_TRANSFER(X) X(uint8_t, 1)
+#define DATA_TYPES(X, S) \
+    X(INTEGER) S \
+    X(NIL) S \
+    X(BOOLEAN) S \
+    X(FLOAT) S \
+    X(STRING) S \
+    X(BINARY) S \
+    X(ARRAY) S \
+    X(MAP) S \
+    X(EXTENSION)
+#define COMMA ,
+#define SEMICOLON ;
+#define NOTHING 
+
+#define ENUM_X(name) TYPE_##name
+typedef enum DataTypes {
+    DATA_TYPES(ENUM_X, COMMA)
+} DataTypes;
+
+typedef enum ReadTypes {
+    Inline,
+    InlineLength,
+    FixedLength,
+    ReadLength,
+    ElementsInline,
+    ReadElementts,
+} ReadTypes;
+
+#define FORMATS(X, S) \
+    X(POSITIVE_FIXINT, INTEGER, 0x00, 0x7F, Inline, 0x7F) S \
+    X(FIXMAP, MAP, 0x80, 0x8F, InlineLength, 0x0F) S \
+    X(FIXARRAY, ARRAY, 0x90, 0x9F, InlineLength, 0x0F) S \
+    X(FIXSTR, STRING, 0xa0, 0xBF, InlineLength, 0x1F) S \
+    X(NIL, NIL, 0xC0, 0xC0, Inline, 0x00) S \
+    X(UNUSED, UNUSED, 0xC1, 0xC1, Inline, 0x00) S \
+    X(FIXBOOL, BOOLEAN, 0xC2, 0xC3, Inline, 0x01) S \
+    X(BIN8, BINARY, 0xC4, 0xC4, ReadLength, 1) S \
+    X(BIN16, BINARY, 0xC5, 0xC5, ReadLength, 2) S \
+    X(BIN32, BINARY, 0xc6, 0xC6, ReadLength, 4) S \
+    X(EXT8, EXTENSION, 0xC7, 0xC7, ReadLength, 1) S \
+    X(EXT16, EXTENSION, 0xC8, 0xC8, ReadLength, 2) S \
+    X(EXT32, EXTENSION, 0xC9, 0xC9, ReadLength, 4) S \
+    X(FLOAT32, FLOAT, 0xCA, 0xCA, FixedLength, 4) S \
+    X(FLOAT64, FLOAT, 0xCB, 0xCB, FixedLength, 8) S \
+    X(UINT8, INTEGER, 0xCC, 0xCC, FixedLength, 1) S \
+    X(UINT16, INTEGER, 0xCD, 0xCD, FixedLength, 2) S \
+    X(UINT32, INTEGER, 0xCE, 0xCE, FixedLength, 4) S \
+    X(UINT64, INTEGER, 0xCF, 0xCF, FixedLength, 8) S \
+    X(INT8, INTEGER, 0xD0, 0xD0, FixedLength, 1) S \
+    X(INT16, INTEGER, 0xD1, 0xD1, FixedLength, 2) S \
+    X(INT32, INTEGER, 0xD2, 0xD2, FixedLength, 4) S \
+    X(INT64, INTEGER, 0xD3, 0xD3, FixedLength, 8) S \
+    X(FIXEXT1, EXTENSION, 0xD4, 0xD4, FixedLength, 1) S \
+    X(FIXEXT2, EXTENSION, 0xD5, 0xD5, FixedLength, 2) S \
+    X(FIXEXT4, EXTENSION, 0xD6, 0xD6, FixedLength, 4) S \
+    X(FIXEXT8, EXTENSION, 0xD7, 0xD7, FixedLength, 8) S \
+    X(FIXEXT16, EXTENSION, 0xD8, 0xD8, FixedLength, 16) S \
+    X(STR8, STRING, 0xD9, 0xD9, ReadLength, 1) S \
+    X(STR16, STRING, 0xDA, 0xDA, ReadLength, 2) S \
+    X(STR32, STRING, 0xDB, 0xDB, ReadLength, 4) S \
+    X(ARRAY16, ARRAY, 0xDC, 0xDC, ReadLength, 2) S \
+    X(ARRAY32, ARRAY, 0xDD, 0xDD, ReadLength, 4) S \
+    X(MAP16, MAP, 0xDE, 0xDE, ReadLength, 2) S \
+    X(MAP32, MAP, 0xDF, 0xDF, ReadLength, 4) S \
+    X(NEGATIVE_FIXINT, INTEGER, 0xE0, 0xFF, Inline, 0x1F)
+
+typedef struct FormatInfo {
+    char *name;
+} FormatInfo;
+
+#define ENUM_FORMATS_X(name, dataType, min, max, readType, readTypeParameter) FORMAT_##name
+typedef enum Formats {
+    FORMATS(ENUM_FORMATS_X, COMMA)
+} Formats;
+
+#define FORMATS_NAMES_X(name, dataType, min, max, readType, readTypeParameter) #name
+char *formatsNames[] = {
+    FORMATS(FORMATS_NAMES_X, COMMA)
+};
+
+Formats FirstByteToFormat[256];
+
+void dumpPack(uint8_t *data, uint32_t indent) {
+    Formats format = FirstByteToFormat[data[0]];
+    printf("%x: %s\n", data[0], formatsNames[format]);
+}
+
+uint8_t demoPack[] = {1}; // fixint 1
+
+void fillSpots(uint16_t from, uint16_t to, Formats value) {
+    for (uint8_t i = from; i <= to; i++) {
+        FirstByteToFormat[i] = value;
+    }
+}
+
+#define FILL_SPOTS_X(name, dataType, min, max, readType, readTypeParameter) fillSpots(min, max, FORMAT_##name);
+void initialize() {
+    FORMATS(FILL_SPOTS_X, NOTHING);
+}
 
 int32_t main() {
-    printf("length of an integer: %i\n", TEST_TRANSFER(GET_LENGTH));
+    static bool intitialized = false;
+    if (!intitialized) {
+        intitialized = true;
+        initialize();
+    }
+    printf("dumping test data...\n");
+    dumpPack(demoPack, 0);
 }
\ No newline at end of file