A buffer for use with a word processing fixed disk controller. The buffer is connected to a microprocessor and communications bus used for interfacing a floppy disk processor to a hard or fixed disk controlled. Also connected to the communications bus are a direct memory access (DMA) controller and random...http://www.google.de/patents/US4454595?utm_source=gb-gplus-sharePatent US4454595 - Buffer for use with a fixed disk controller
