公开(公告)号：JPS63173130A

公开(公告)日：1988-07-16

申请号：JP29791687

申请日：1987-11-27

Applicant: IBM

Inventor： KAUFHOLZ GERD ,  MAERGNER JUERGEN ,  SCHWERMER HARTMUT

IPC: G06F9/455 ,  G06F9/22 ,  G06F9/30 ,  G06F9/318

公开(公告)号：DE3685117D1

公开(公告)日：1992-06-04

申请号：DE3685117

申请日：1986-12-30

Applicant: IBM

Inventor： KAUFHOLZ GERD ,  MAERGNER JUERGEN ,  SCHWERMER HARTMUT

IPC: G06F9/455 ,  G06F9/22 ,  G06F9/30 ,  G06F9/318

Abstract: The expansion system allows hindling of a third class of functions in addition to the first class of non-redundant basic functions and the second class of functions wholly obtained via the basic functions. The third class of functions are only obtained in part via the non-redundant basic functions. A switch mechanism switches the processor between an external operating mode for handling the commands and microprogram instructions for the first class of functions and an internal operating mode for obtaining the second and third class of cuntions. In the latter mode, an auxiliary operator can supply additional functions for obtaining a new overall architecture.