horizontal microcode การใช้

Fisher's innovations involved developing a compiler that could target horizontal microcode from programs written in an ordinary programming language.
When both vertical and horizontal microcode are used, the horizontal microcode may be referred to as " nanocode " or " picocode ".
When both vertical and horizontal microcode are used, the horizontal microcode may be referred to as " nanocode " or " picocode ".
VLIW processors have instructions that behave similarly to very wide horizontal microcode, although typically without such fine-grained control over the hardware as provided by microcode.
Microcode can be characterized as " horizontal " or " vertical ", referring primarily to whether each microinstruction controls CPU elements with little or no decoding ( horizontal microcode ) or requires extensive decoding by combinatorial logic before doing so ( vertical microcode ).