公开(公告)号：CA2059928A1

公开(公告)日：1992-08-05

申请号：CA2059928

申请日：1992-01-23

Applicant: IBM

Inventor： DINWIDDIE JOHN M ,  FREEMAN BOBBY J ,  MICALLEF THOMAS J ,  SUAREZ GUSTAVO A ,  WILKIE BRUCE J

IPC: G09G5/00 ,  G06F3/14 ,  G06T3/00 ,  G09G5/14 ,  H04N5/765

Abstract: A multimedia solution is presented which allows a multimedia architecture to be implemented on an existing computer system. According to the invention, an expansion unit which incorporates a multimedia architecture is provided. The expansion unit is connected to an existing computer system via an expansion slot of an I/O bus of the existing computer as well as via a display device output terminal of the computer. The expansion unit is also connected to a display device. Accordingly, the expansion unit controls the presentation which is provided on the display device.

公开(公告)号：PT94055A

公开(公告)日：1991-11-29

申请号：PT9405590

申请日：1990-05-16

Applicant: IBM

Inventor： BAKER ERNEST D ,  DINWIDDIE JOHN M ,  GRICE LONNIE E ,  LOFFREDO JOHN M ,  SANDERSON KENNETH R ,  SUAREZ GUSTAVO A

IPC: G06F9/46 ,  G06F9/50 ,  G06F11/16 ,  G06F12/02 ,  G06F13/18 ,  G06F15/16 ,  G06F15/167 ,  G06F15/177 ,  G06F

Abstract: The functions of two virtual operating systems (e.g. S/370 VM, VSE or IX370 and S/88 OS) are merged into one physical system. Partner pairs of S/88 processors run the S/88 OS and handle the fault tolerant and single system image aspects of the system. One or more partner pairs of S/370 processors are coupled to corresponding S/88 processors dirertly and through the S/88 bus. Each S/370 processor is allocated form 1 to 16 megabytes of contiguous storage from the S/88 main storage. Each S/370 virtual operating system thinks its memory allocation starts at address 0, and it manages its memory through normal S/370 dynamic memory allocation and paging techniques. The S/370 is limit checked to prevent the S/370 from accessing S/88 memory space. The S/88 Operating System is the master over all system hardware and I/O devices. The S/88 processors across the S/370 address space in direct response to a S/88 application program so that the S/88 may move I/O data into the S/370 I/O buffers and process the S/370 I/O operations. The S/88 and S/370 peer processor pairs to execute their respective Operating Systems in a single system environment without significant rewriting of either operating system. Neither operating system is aware of the other operating system nor the other processor pairs.