Re: Single-height Qbus grant continuity PCB
On Tue, Aug 14, 2018 at 3:04 PM, Noel Chiappa via cctalk wrote: > > From: Tony Duell > > > I have here a little square board (the same size as the older Unibus > > grant continuity card) with just 2 pairs of pins linked. ... Has anyone > > come across that one before? > > No, that's a new one on me. I have seen off-brand single-height QBUS grant > jumpers, but full length (no knuckle-busting); I have a number from MDB > Systems. I have something like it made by Compuserve - dual height but single length - twice as big as a Unibus G727. -ethan
Re: Single-height Qbus grant continuity PCB
> From: Tony Duell > I have here a little square board (the same size as the older Unibus > grant continuity card) with just 2 pairs of pins linked. ... Has anyone > come across that one before? No, that's a new one on me. I have seen off-brand single-height QBUS grant jumpers, but full length (no knuckle-busting); I have a number from MDB Systems. Noel
Re: Single-height Qbus grant continuity PCB
On Tue, Aug 14, 2018 at 6:01 PM, Pete Turnbull via cctalk wrote: > On 14/08/2018 16:52, Tony Duell via cctalk wrote: > >> But I have here a little square board (the same size as the older >> Unibus grant continuity card) with just 2 pairs of pins linked. In >> the etch is a Digital logo (so I assume it's a real DEC product) and: >> >> LSI11 Grant Continuity G7272 5012564B Side 2 >> >> Has anyone come across that one before? > > > No, not seen one of those. Not sure I want to, either: I like to keep the > skin on my knuckles ;-) I don't think that seeing it will scrape your hands... Trying to get it in or out of a full backplane might. -tony
Re: Single-height Qbus grant continuity PCB
On 14/08/2018 16:52, Tony Duell via cctalk wrote: But I have here a little square board (the same size as the older Unibus grant continuity card) with just 2 pairs of pins linked. In the etch is a Digital logo (so I assume it's a real DEC product) and: LSI11 Grant Continuity G7272 5012564B Side 2 Has anyone come across that one before? No, not seen one of those. Not sure I want to, either: I like to keep the skin on my knuckles ;-) -- Pete Pete Turnbull
Re: Single-height Qbus grant continuity PCB
On Tue, Aug 14, 2018 at 9:52 AM, Tony Duell via cctalk < cctalk@classiccmp.org> wrote: > But I have here a little square board (the same size as the older Unibus > grant > continuity card) with just 2 pairs of pins linked. In the etch is a > Digital logo (so > I assume it's a real DEC product) and : > > LSI11 Grant > Continuity > G7272 > 5012564B > Side 2 > > Has anyone come across that one before? > Yes. It's not as common as M9047, and not as convenient, but it works. There's reportedly also an M9037, which I've never seen.
