System for controlling multiple port/multiple channel I/O config

Details System for controlling multiple port/multiple channel I/O config System for controlling multiple port/multiple channel I/O config

1994-04-11

1995-05-23

Shin, Christopher B.

Boots, shoes, and leggings

3642383, 3642419, 364DIG1, G06F 1312

Patent

active

054189098

ABSTRACT:
The I/O configuration of a computer system includes two channels which are capable of being available on up to four interface ports, with the ports being incorporated within the channel in order to eliminate the need for an external switch. Control indicators are provided for monitoring the communications request initiation status of each channel and each port to achieve expeditious transfers through a selected port between the channel and peripheral devices. The I/O configuration is established responsive to the communications request initiation status that indicates one of several states depending on which side initiates a request and whether the connection has been made.

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I.B.M. Technical Disclosure Bulletin, vol. 29, No. 9 dated Feb. 1987 (1 page).

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