Difference between revisions of "QBUS"
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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. | ||
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| + | '''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 00:25, 17 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
...
