Noun
microassembler (plural microassemblers)
(computing) An assembler that operates on microcode.
A microassembler allows a programmer to define the table of bits symbolically. Source: Internet
However, a commonly usable microassembler for today's CPUs is not available to manipulate the microcode. Source: Internet
For example, through the use of macro-assembler-like capabilities, Digital Equipment Corporation used their MICRO2 microassembler for a very wide range of computer architectures and implementations. Source: Internet