Azog-Thoth@cup.portal.com (William Thomas Daugustine) (12/23/90)
Well, the header pretty much tells it all... How does one tell the difference between a Qbuss module and a Unibuss module? Physcally, that is. Ive never had the pleasure of working on Qbuss stuff, and have a memory card that I dont quite know what is. Its a National Semiconductor memory card, stocked with 64k drams. It would either be a duel height Unibuss card (is there such a beastie?) or a Qbuss card. If its Qbuss, its useless to me, but if its Unibuss, Id like to put it in my PDP-11/34. (the 11/34 has only quad and duel height slots left, which is why I ask...) Thanx Billy D'Augustine Azog-Thoth@cup.portal.com
terry@spcvxb.spc.edu (Terry Kennedy, Operations Mgr) (12/23/90)
In article <37169@cup.portal.com>, Azog-Thoth@cup.portal.com (William Thomas Daugustine) writes: > > How does one tell the difference between a Qbuss module and a Unibuss > module? Physcally, that is. Ive never had the pleasure of working on > Qbuss stuff, and have a memory card that I dont quite know what is. Well, you could look for the grant lines on the connector. Unibus boards normally have either 4 sets of 2 fingers wired together, or an interrupt priority plug. On DEC modules, the Q-bus stuff is normally named xxV11 or xxQ11, while the Unibus stuff is xx11 or xxU11. Having said all that, there isn't a lot of dual-width Unibus stuff. Most of it is either bus cables/terminators/bootstraps or boards for dedicated slots in special backplanes. Thus I think you have a Q-bus board. If you want an MS11-LD (128Kw parity) or MS11-MB (128Kw ECC), drop me a message and we'll arrange a time for you to pick it up. It should fit in whatever mode of transportation you use 8-). Since it's all the memory a '34 can address, you can just pull whatever boards you have in the '34 out and not worry about slots. Terry Kennedy Operations Manager, Academic Computing terry@spcvxa.bitnet St. Peter's College, US terry@spcvxa.spc.edu (201) 915-9381