QBUS: Difference between revisions
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The QBUS, previously known as the "[[LSI-11]] bus", was intended as a cheaper alternative to the [[UNIBUS]] system by [[Digital Equipment Corporation]]. | |||
It was widely used in [[PDP-11]]s and [[VAX]]en. | |||
The bus had multiplexed address and data lines, and was available in 16-, 18-, and 22-bit configurations. | |||
'''Important note:''' The 16-bit and 18/22-bit backplanes are '''electrically incompatible''' and mixing the two may damage cards on the bus. | |||
==Signalling== | |||
... | |||
==Wire list== | |||
... | |||
[[Category: Bus architectures]] | [[Category: Bus architectures]] | ||
Revision as of 23:25, 16 May 2007
The QBUS, previously known as the "LSI-11 bus", was intended as a cheaper alternative to the UNIBUS system by Digital Equipment Corporation.
It was widely used in PDP-11s and VAXen.
The bus had multiplexed address and data lines, and was available in 16-, 18-, and 22-bit configurations.
Important note: The 16-bit and 18/22-bit backplanes are electrically incompatible and mixing the two may damage cards on the bus.
Signalling
...
Wire list
...
