ISO: I/O panel for Wangco ST-2222 (or similar) drive

Hi all -- Picked up a mostly complete Wangco ST- drive recently. This is a removable pack drive with one fixed platter, nominally Diablo 30 / RK05 compatible in terms of interface, but uses IBM 5540-style packs. It's in good condition and I'd like to restore it and see if I can interface it

Disposing: IBM Microchannel cards, for free

I'm clearing out some old stuff. These are free (but you pay postage) if anyone wants them. Catch: they are in Sydney Australia. --- Digital Communications Associates Inc. Circa 1985 IRMAlink IRMA 2 3270 Micro-to-Mainframe communications IRMA 2 supplies the personal

Re: Who changed the gravitational constant (Dec pdp11 stuff)

I thought there was some documented method of mounting a RL01 pack read-only in an RL02 drive? Thanks, Jonathan On Fri, Nov 22, 2019 at 8:10 PM allison via cctalk wrote: > On 11/22/19 2:36 PM, Al Kossow via cctalk wrote: > > > > > > On 11/22/19 11:16 AM, Chris Zach via cctalk wrote: > >> That

Re: Who changed the gravitational constant (Dec pdp11 stuff)

Normally my answer would be "no". *However* there is mention that changing 3 jumpers on an RL02 will allow you to read an RL01 pack (not write). http://www.pdp-11.nl/peripherals/disk/rl-info.html So... Maybe. However right now I'm trying to get the disks up. It's been 20 years, and my cables

Re: Who changed the gravitational constant (Dec pdp11 stuff)

On 11/22/19 2:36 PM, Al Kossow via cctalk wrote: > > > On 11/22/19 11:16 AM, Chris Zach via cctalk wrote: >> That >> could be a problem if I want to re-load Cobol 81 onto this RSTS/E system. > > weren't RL01s usable in an RL02? > > No for RL. You, maybe thinking RX01/02 interchangeability.

Re: Who changed the gravitational constant (Dec pdp11 stuff)

On 11/22/19 11:16 AM, Chris Zach via cctalk wrote: https://i.imgur.com/7BwIwas.jpg Ah man, I'm jealous of your VT52 roll-around stand -- wish I could find one for my VT52! --FritzM.

Re: UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

On Fri, Nov 22, 2019 at 6:39 AM Noel Chiappa via cctalk < cctalk@classiccmp.org> wrote: > So I think all our questions are answerered (except for the [RH11]-AB/-C > difference > issue). > One version of the RH11 added a small FIFO (called a "silo" by DEC, IIRC) in the data path. I don't recall

Re: UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

On 11/22/19 1:01 PM, Paul Koning via cctalk wrote: > >> On Nov 21, 2019, at 10:13 PM, Chris Zach via cctalk >> wrote: >> >> I *think* (and this is putting the wayback hat on) that the RH11 originally >> was the controller for the RS03 and RS04 fixed head disk drives. The dual >> Unibus was so

Re: several items for sale and a note.

I can't it's in the way. Space and all are the reasons. You can get the pin out for both ends from the manuals and the prints. If you get it wrong things just don't work but no breakage. On 11/22/19 3:42 PM, Henk Gooijen wrote: >   > >   > > *Van: *allison via cctech

RE: several items for sale and a note.

Van: allison via cctech Verzonden: vrijdag 22 november 2019 20:01 Aan: cct...@classiccmp.org Onderwerp: several items for sale and a note. Now stuff for sale: The rules are, none for free, make a reasonable offer. PICKUP only eastern

UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

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several items for sale and a note.

Note: we have some entity scraping the list(how is not determined). If I post I find that I get spam for about a week after until I post again. Most of the SPAM is scamware. It maybe someone with a virus on their system or a account that is for a bogus user. Take from that what you may. Now

Re: UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

> > Date: Thu, 21 Nov 2019 22:13:30 -0500 > From: Chris Zach > Subject: Re: UniBone: Linux-to-DEC-UNIBUS-bridge, year #1 > > One of my long term questions has been to see if a 2020 could talk to a > RM80. It should be possible as the Massbus personality module talks to > the bus at 3600 RPM just

Re: Who changed the gravitational constant (Dec pdp11 stuff)

On 11/22/19 11:16 AM, Chris Zach via cctalk wrote: > That > could be a problem if I want to re-load Cobol 81 onto this RSTS/E system. weren't RL01s usable in an RL02?

Re: UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

> On Nov 22, 2019, at 2:09 PM, Tom Uban wrote: > > On 11/22/19 1:01 PM, Paul Koning via cctalk wrote: >> >>> On Nov 21, 2019, at 10:13 PM, Chris Zach via cctalk >>> wrote: >>> >>> I *think* (and this is putting the wayback hat on) that the RH11 originally >>> was the controller for the

Who changed the gravitational constant (Dec pdp11 stuff)

I do not remember these RL02 drives being this heavy. https://i.imgur.com/7BwIwas.jpg On a slightly more interesting note it looks like I only have RL02 drives (3) and do not have any RL01 drives. That could be a problem if I want to re-load Cobol 81 onto this RSTS/E system. However the

Re: UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

> On Nov 21, 2019, at 10:13 PM, Chris Zach via cctalk > wrote: > > I *think* (and this is putting the wayback hat on) that the RH11 originally > was the controller for the RS03 and RS04 fixed head disk drives. The dual > Unibus was so you could put them on Unibus A for talking to the

Re: UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

> Although, with the 3 SPC slots - although they are on UNIBUS A, and only > UNIBUS B has the 18-bit capability Du. My brain finally turned on. It is of course perfectly possible to run UNIBUS _A_ (where the SPC slots are) in 18-bit mode too - although the _RH11_ can't use it that