Re: M688 Flip Chip Unibus Power Fail Driver Modules
Noel said > (I said) > There is an 11/15 > > ??? Is that a typo for 'PDP-15'? The -11/15 looks just like an -11/20 > > https://www.ricomputermuseum.org/collections-gallery/equipment/dec-pdp-1115 > > except it only has 16 address switches, not 18 as on the /20. (The front panel > shown there has an OEM-specific re-paint; I couldn't quickly turn up an image > of a DEC /15 front panel.) Yes it was a typo sorry. I had meant to type 'PDP-15' but in my haste and having '11/15' on the brain (owing to the FOX 2 I have) I mistakenly typed that instead. Off-topic for this thread I guess, but, the FOX 2 has a two-tone green panel that are in the Foxboro corporate colours, these being different shades to the Lab(?) 11/20 on the wiki page. (Photo showing some of the FOX 2 switches at http://www.vcfed.org/forum/showthread.php?76489-reproduction-PDP-8e-toggle-switches/page2 ) If anyone ever sees a DECwriter in green then that would likely be a Foxboro one as well. I've also seen on eBay a front panel from a russian 11/15 clone, quite a crude manufacture.
Re: M688 Flip Chip Unibus Power Fail Driver Modules
> From: Steven Malikoff > Would that be part of this system at a Japanese computer museum? ... > the 11/05 has 'Unichannel15' on it Yes, the 3 bays in the center are a PDP-15. (The indicator panel at the top of the center bay is the one for the PDP-15 CPU; you can see it here: http://ana-3.lcs.mit.edu/~jnc/tech/DECIndicatorPanels.html at the top of the 'PDP-15' section.) The Unichannel 15: https://gunkies.org/wiki/UNICHANNEL_15_System is undoubtly there to drive the RK05; I don't think there's a native PDP-15 controller for that. > There is an 11/15 ??? Is that a typo for 'PDP-15'? The -11/15 looks just like an -11/20 https://www.ricomputermuseum.org/collections-gallery/equipment/dec-pdp-1115 except it only has 16 address switches, not 18 as on the /20. (The front panel shown there has an OEM-specific re-paint; I couldn't quickly turn up an image of a DEC /15 front panel.) Noel
Re: M688 Flip Chip Unibus Power Fail Driver Modules
Noel said > The "Spare Module Handbook" lists: > > ... > > MX11-B > > I apparently can't read. Should be "MX15-B": > > https://gunkies.org/wiki/MX15-B_Memory_Multiplexer Would that be part of this system at a Japanese computer museum? There is an 11/15 and the 11/05 has 'Unichannel15' on it: https://www.kcg.ac.jp/museum/en/computer/mini_computers/dec.html
Re: M688 Flip Chip Unibus Power Fail Driver Modules
> The "Spare Module Handbook" lists: > ... > MX11-B I apparently can't read. Should be "MX15-B": https://gunkies.org/wiki/MX15-B_Memory_Multiplexer Noel
Re: M688 Flip Chip Unibus Power Fail Driver Modules
> From: Ethan Dicks > what are these found in? The "Spare Module Handbook" lists: RH11-AB TM11, TMA11 MX11-B Does _anyone_ actually have an MX11? Any documentation would also be welcome; all I've been able to find out about it is a listing for the addresses of control registers. Noel
RE: M688 Flip Chip Unibus Power Fail Driver Modules
Van: Ethan Dicks via cctalk<mailto:cctalk@classiccmp.org> Verzonden: donderdag 7 januari 2021 01:55 Aan: Noel Chiappa<mailto:j...@mercury.lcs.mit.edu>; General Discussion: On-Topic and Off-Topic Posts<mailto:cctalk@classiccmp.org> Onderwerp: Re: M688 Flip Chip Unibus Power Fail Driver Modules On Wed, Jan 6, 2021 at 5:24 PM Noel Chiappa via cctalk wrote: > Anyone need/want a couple of these? Someone has a group of 5 for sale on eBait > (#184317666245), and I want a couple, but not _5_. The seller didn't respond > to a request to split up the lot, so I'd like to go in with a couple of other > people on the. Any takers? I'm a "maybe"... what are these found in? (I have quite a bit of early 70s PDP-11 gear). -ethan ISTR that the M688 is optional in the RH-11 (MASSBUS interface for PDP-11), but I am too lazy to check (still too early). Henk, PA8PDP
Re: M688 Flip Chip Unibus Power Fail Driver Modules
> On Wed, Jan 6, 2021 at 5:24 PM Noel Chiappa via cctalk > wrote: >> Anyone need/want a couple of these? Someone has a group of 5 for sale on >> eBait >> (#184317666245), and I want a couple, but not _5_. The seller didn't respond >> to a request to split up the lot, so I'd like to go in with a couple of other >> people on the. Any takers? > > I'm a "maybe"... what are these found in? (I have quite a bit of early > 70s PDP-11 gear). > > -ethan It's not used in the PDP-11/15, that I can tell. I checked the 11/15 module utilisation diagram and it specifies the KP11-A M7217 and M7218 Power Fail and Restart modules, which my FOX2 does have installed. Steve.
Re: M688 Flip Chip Unibus Power Fail Driver Modules
On Wed, Jan 6, 2021 at 5:24 PM Noel Chiappa via cctalk wrote: > Anyone need/want a couple of these? Someone has a group of 5 for sale on eBait > (#184317666245), and I want a couple, but not _5_. The seller didn't respond > to a request to split up the lot, so I'd like to go in with a couple of other > people on the. Any takers? I'm a "maybe"... what are these found in? (I have quite a bit of early 70s PDP-11 gear). -ethan
