System for converting instructions, and method therefore

摘要

A converter (130) comprises a multiplex-buffer (410) at a bus (120), a decoder (420), an output buffer (430) and a comparator (440). The multiplex-buffer (410) forwards VMAX bits (260) of Huffman coded code portions (222) from the bus (120) to the decoder (410). The VMAX bits (260) can comprise further bits set to logical "1" or "0" at random. On a control output (414), the multiplex-buffer (410) provides a signal K identifying which of the VMAX bits are valid or invalid. The decoder (420) maps the VMAX bits (260) into a preliminary bit cluster (426) and indicates a code length V regardless whether some or all bits are valid or not. The comparator (440) checks V and K and allows the output buffer (430) to copy the preliminary bit cluster (426) into instruction portions (212) only when the code length fits the identification of valid bits.