ABEL-Hardware Description Language
ABEL-HDL from DATA I/O was intended for relatively simpler PLD circuit designs that could be implemented on SPLDs. ABEL allows the designers to describe the digital circuit designs expressed in the form of truth tables, Boolean functions, state diagrams or any combination of these. It also allows the designer to optimize the design through design validation without specifying a device. In other words, ABEL-HDL facilitates writing hardware-independent programs, and it is only after the design verification and optimization have taken place that the PLD device is chosen. The source code written in the ABEL environment is in standard format to have interface compatibility with other tools.