Difference between revisions of "Grant continuity card"
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| − | + | A '''grant continuity card''' is used in some [[bus]]es which use [[bus grant line]]s as part of their [[interrupt]]- or [[Direct Memory Access|DMA]]-handling mechanisms. They go in otherwise-empty slots in the [[backplane]], and carry the bus grant [[signal]] from the 'in' pins to the 'out' pins in the slot. [[Digital Equipment Corporation|DEC]]'s [[UNIBUS]] and [[QBUS]] use them. | |
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| + | UNIBUS: | ||
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| + | * [[G727 grant continuity card]] | ||
| + | * [[G7273 grant continuity card]] | ||
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| + | QBUS: | ||
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| + | * [[M9047 grant continuity card]] | ||
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| + | {{disambiguation}} | ||
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| + | [[Category: Hardware Basics]] | ||
Latest revision as of 22:39, 3 December 2021
A grant continuity card is used in some buses which use bus grant lines as part of their interrupt- or DMA-handling mechanisms. They go in otherwise-empty slots in the backplane, and carry the bus grant signal from the 'in' pins to the 'out' pins in the slot. DEC's UNIBUS and QBUS use them.
UNIBUS:
QBUS:
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