Some systems (particularly older, microcode-based architectures) can also perform various transcendental functions such as exponential or trigonometric calculations, though in most modern processors these are done with software library routines.
In 1967, IBM gave their San Jose, California storage development center a task to develop a reliable and inexpensive system for loading microcode into their System/370 mainframes in a process called Initial Control Program Load (ICPL).
With this e-learning tool, devices like miniaturized calculators, microcontroller, microprocessors, and computer can be explained didactically on own-developed instruction code on register transfer level, which are controlled by program sequences of micro instructions (microcode).
From 1977 to 1979, he was a Senior Design Engineer at Motorola, where he specified and designed the microcode and the controller core of the MC68000 microprocessor, one of the first microprocessors designed by structured VLSI design.