Difference between revisions of "G727 grant continuity card"
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| − | The '''G727 grant continuity card''' (known to many as the 'knuckle-buster') was very small card ([[DEC card form factor|single]] width, but only approximately half the [[DEC card form factor|standard length]]) which plugged into an [[Small Peripheral Controller|SPC slot]] or [[Modified UNIBUS Device|MUD slot]] in a [[UNIBUS]] [[backplane]] in an otherwise-empty slot, and carried the [[bus grant line]] signals through the slot. | + | The '''G727 grant continuity card''' (known to many as the 'knuckle-buster') was very small card ([[DEC card form factor|single]] width, but only approximately half the [[DEC card form factor|standard length]]) which plugged into the [[DEC edge connector contact identification|D connector]] of an [[Small Peripheral Controller|SPC slot]] or [[Modified UNIBUS Device|MUD slot]] in a [[UNIBUS]] [[backplane]] in an otherwise-empty slot, and carried the [[bus grant line]] signals through the slot. |
It carried only the BG4-BG7 grant lines from the 'in' pins to the 'out' pins. Since it contained no components, and had no handle, it could be used in slots which did not have the usual amount of space available (such as next to the [[MM11-D core memory]]). | It carried only the BG4-BG7 grant lines from the 'in' pins to the 'out' pins. Since it contained no components, and had no handle, it could be used in slots which did not have the usual amount of space available (such as next to the [[MM11-D core memory]]). | ||
Revision as of 02:11, 17 December 2017
The G727 grant continuity card (known to many as the 'knuckle-buster') was very small card (single width, but only approximately half the standard length) which plugged into the D connector of an SPC slot or MUD slot in a UNIBUS backplane in an otherwise-empty slot, and carried the bus grant line signals through the slot.
It carried only the BG4-BG7 grant lines from the 'in' pins to the 'out' pins. Since it contained no components, and had no handle, it could be used in slots which did not have the usual amount of space available (such as next to the MM11-D core memory).
