Intermediate memory system for connecting microcomputers to a rotating disk memory

A computer system including at least one central processor unit, a rotating disk memory device in which data is stored on a disk in sectors, and an intermediate memory system for controlling data transfer between said at least one central processor unit and said rotating disk memory device, all connected to a common bus;

• and wherein said intermediate memory system comprises:
• means, coupled to said bus, for separating data and commands of original data packets received by said intermediate memory system;
• means, coupled to said means for separating, for creating composite data packets, wherein each composite packet consists of a new command and of all data blocks of a number of original data packets received by the intermediate memory system and wherein said new command contains a size indication of each data block;
• and
• means, coupled to said means for creating for sending the created said composite data packets via said bus to said rotating disk memory device.