公开(公告)号：IT1216770B

公开(公告)日：1990-03-08

申请号：IT1955588

申请日：1988-02-26

Applicant: IBM

Inventor： LO YUAN CHANG ,  MOELLER DENNIS LEE ,  SZAREK JOHN JOSEPH

IPC: G06F12/16 ,  G06F11/22 ,  G06F12/06 ,  G11C29/00 ,  G06F

Abstract: A microcomputer system has first, low order address, memory means (17) soldered to the planar printed circuit board and can accept further memory means (18) pluggable into socket means on the board. At power on self test, the memory means are tested, and, if an error is detected in the first memory means, this memory means is disabled by directing the lowest order memory addresses to the second memory means and reducing the highest order addresses by the number of locations in the first memory means.

公开(公告)号：IT8819555D0

公开(公告)日：1988-02-26

申请号：IT1955588

申请日：1988-02-26

Applicant: IBM

Inventor： LO YUAN CHANG ,  MOELLER DENNIS LEE ,  SZAREK JOHN JOSEPH

IPC: G06F12/16 ,  G06F11/22 ,  G06F12/06 ,  G11C29/00 ,  G06F

Abstract: A microcomputer system has first, low order address, memory means (17) soldered to the planar printed circuit board and can accept further memory means (18) pluggable into socket means on the board. At power on self test, the memory means are tested, and, if an error is detected in the first memory means, this memory means is disabled by directing the lowest order memory addresses to the second memory means and reducing the highest order addresses by the number of locations in the first memory means.