Re: ultrasonic cleaning for disk heads

The most versatile, effective cleaning tool /ever/. Not even sarcastic. =] -- Anders Nelson +1 (517) 775-6129 www.erogear.com On Fri, Jan 26, 2018 at 3:45 PM, dwight via cctalk wrote: > I always use my finger and finger nail. Your finger is very sensitive to > even

Re: DEC H7260 PSU fault

On Sat, Jan 27, 2018 at 9:04 AM, Jules Richardson via cctalk wrote: > > Time to add CPU/memory in, wire up a console cable and see what happens, I > guess. With the PSU working everything else should be easier to get going after that. Did you figure out what the hard

Re: TESTFDC

That came off of the original import from Dave's old registry. I've still got to go through and approve the new submissions, planning on doing that this weekend, as well as adding a few of my own! Thanks, Jonathan On Sat, Jan 27, 2018 at 2:16 PM, Adrian Graham via cctalk < cctalk@classiccmp.org>

Re:

ipa as in beer? On Sat, Jan 27, 2018 at 12:17 PM, Carl Claunch via cctech < cct...@classiccmp.org> wrote: > The IPA is heated to 60C before the ultrasound is able to remove the oxide > remnants, FWIW. > > While we can often get the entire smooth surface of the head clean with > swabs and IPA, it

Re:

Isopropyl alcohol would be a sensible guess, I've not seen that abbreviation before though . - H On Sat, Jan 27, 2018, 18:24 Adrian Stoness via cctech wrote: > ipa as in beer? > > On Sat, Jan 27, 2018 at 12:17 PM, Carl Claunch via cctech < > cct...@classiccmp.org> wrote:

Re:

> On Jan 27, 2018, at 10:23, Adrian Stoness via cctech > wrote: > > ipa as in beer? Isopropyl alcohol. Not very good for drinking; even store-brand vodka in plastic jugs is less harsh. :) -- Mark J. Blair, NF6X http://www.nf6x.net/

[no subject]

The IPA is heated to 60C before the ultrasound is able to remove the oxide remnants, FWIW. While we can often get the entire smooth surface of the head clean with swabs and IPA, it is very difficult to clean all the material that forms in the cruciform trench recessed into the head (where the

Re: ADV11-A vs. ADV11-C and 22-bit Bus

> On Jan 27, 2018, at 11:16 AM, Mark Matlock via cctech > wrote: > > I have an ADV11-A that I would like to use in a Q22 RSX11M+ system. The > ADV11-C will work in a 22-bit Bus system from what I understand but the > ADV11-A was made for 18 bit Bus systems. In the OEM

ADV11-A vs. ADV11-C and 22-bit Bus

I have an ADV11-A that I would like to use in a Q22 RSX11M+ system. The ADV11-C will work in a 22-bit Bus system from what I understand but the ADV11-A was made for 18 bit Bus systems. In the OEM Micronote book, Note 5, it states: Any device which uses backplane pins BC1, BD1, BEl, BF1

Re: DEC H7260 PSU fault

On Sat, Jan 27, 2018 at 4:34 PM, Jules Richardson via cctalk wrote: > Success! Congratulations! > I'd left the rear panel console settings how they were when I got the > machine, I mean 'T' for terminal, right? Wrong... arrow for terminal, 'T' > for "sit there alternating

Re: RK05 rear filters/brackets

On Jan 27, 2018, at 8:46 AM, Noel Chiappa via cctalk wrote: > http://gunkies.org/wiki/RK05_disk_drive#Prefilter_frame Thank you!

Re: ultrasonic cleaning for disk heads

I thoroughly enjoyed Marc's video of the head cleaning. Some dumb questions from a guy who has not yet experienced his first head crash on a removable-pack hard drive: When it happens, am I correct in assuming that the pack is toast, and should never be loaded again? My removable-pack drives

Re: DEC H7260 PSU fault

On 01/27/2018 03:02 PM, Jules Richardson via cctalk wrote: OK, looking at the 630QB tech manual now, which seems to be where these were lifted from... and of course it points out that the LEDs on the M7606 correspond to the hex codes on the panel (i.e. my four red LEDs with the middle pair

Re: TESTFDC

> On 27 Jan 2018, at 21:55, Mike Loewen via cctalk > wrote: > > On Sat, 27 Jan 2018, Adrian Graham via cctalk wrote: > >> I?d like to thank whoever it was who added the Abit K8V Pro/Winbond W83627HF >> with its test results to the TESTFDC page for writing SSSD disks.

Re: RK05 rear filters/brackets

> From: Fritz Mueller > My restored RK05 drives are missing their rear air filters (the ones that > cover the back of the card cage). The formal DEC name is "prefilter" (since the air that comes in here goes through the cards, and the air blower, and then through the absolute filter

Re: ultrasonic cleaning for disk heads

Thanks for the tip on heating, Carl. > On Jan 27, 2018, at 11:02 AM, Mark J. Blair via cctalk > wrote: > Some dumb questions from a guy who has not yet experienced his first head > crash on a removable-pack hard drive: > > When it happens, am I correct in assuming that

Re: TESTFDC

> On 27 Jan 2018, at 20:23, Rob Jarratt wrote: > > A 380Z, nice! I used to use those when I was at University. My final year > project used one connected to a research machine called MU6-G for > diagnostics. All the registers in the machine were connected up as

Re: DEC H7260 PSU fault

On Sat, Jan 27, 2018 at 1:02 PM, Jules Richardson via cctalk wrote: > > OK, looking at the 630QB tech manual now, which seems to be where these were > lifted from... and of course it points out that the LEDs on the M7606 > correspond to the hex codes on the panel (i.e. my

Re: ultrasonic cleaning for disk heads

I too watched Marc's video with great interest, as I have a pair of Diablo 31's identical to his. Now, I'm a long long long way from getting them operational, but it's good to see what has worked for future reference. As I'd never be able to find a similar alignment pack, the heads in mine

Re: ultrasonic cleaning for disk heads

Speaking of these drives, I have a single decpack cartridge which hitchhiked along with a purchase of RL02 packs. It's marked "decpack 2200 BPI-12" and has 12 sector notches in the hub. Does that mean that it was most likely used with an RK05 drive in a PDP-11 system? I seem to recall that

Re: KK11-A / PDP-11/34 Cache module print set

BTW, what's the difference between a KK11-A and KK11-B? Thanks, Marc On Fri, Jan 26, 2018 at 6:21 AM, Noel Chiappa via cctalk < cctalk@classiccmp.org> wrote: > > From: Mattis Lind > > > I have now scanned the MP00574 / KK11-A printset I have received. > > Thank you very much for doing

TESTFDC

I’d like to thank whoever it was who added the Abit K8V Pro/Winbond W83627HF with its test results to the TESTFDC page for writing SSSD disks. I’ve been trying to get a similar setup going for a fortnight now and last week found this motherboard on e*ay for Not Many UK Pounds. Coupled with a

Re: TESTFDC

windows 98 on a athlon 64 shoiuld be one of the fastest windows installs ever :) anyhow cool rig for messing with stuff On Sat, Jan 27, 2018 at 1:16 PM, Adrian Graham via cctalk < cctalk@classiccmp.org> wrote: > I’d like to thank whoever it was who added the Abit K8V Pro/Winbond > W83627HF with

Re: DEC H7260 PSU fault

On 01/27/2018 11:44 AM, Glen Slick via cctalk wrote: On Sat, Jan 27, 2018 at 9:04 AM, Jules Richardson via cctalk wrote: Time to add CPU/memory in, wire up a console cable and see what happens, I guess. With the PSU working everything else should be easier to get

Re:

Yeah for me IPA=India Pale Ale On 2018-01-27 2:45 PM, Henry Bond via cctalk wrote: Isopropyl alcohol would be a sensible guess, I've not seen that abbreviation before though . - H On Sat, Jan 27, 2018, 18:24 Adrian Stoness via cctech wrote: ipa as in beer? On Sat,

Re: DEC H7260 PSU fault

On 01/27/2018 12:51 PM, Adrian Graham via cctalk wrote: Anyway, I tweaked my loads to draw a little more current - and bingo! I'm now getting stable +5V and +12V outputs on both PSUs, a working card cage fan, and the DC OK light comes on. This is good, particularly since my own BA123 has been

Re: TESTFDC

On Sat, 27 Jan 2018, Adrian Graham via cctalk wrote: I?d like to thank whoever it was who added the Abit K8V Pro/Winbond W83627HF with its test results to the TESTFDC page for writing SSSD disks. I?ve been trying to get a similar setup going for a fortnight now and last week found this

Re: DEC H7260 PSU fault

On 01/26/2018 07:15 PM, Jules Richardson via cctalk wrote: After that... well, I need to work out how to get the entire supply assembly to start up while it's open, so that I can work on it outside the machine - then I can at least start looking for differences between the two supplies (boy, are

Re: DEC H7260 PSU fault

> On 27 Jan 2018, at 17:04, Jules Richardson via cctalk > wrote: > > On 01/26/2018 07:15 PM, Jules Richardson via cctalk wrote: >> After that... well, I need to work out how to get the entire supply >> assembly to start up while it's open, so that I can work on it

Re: TESTFDC

(2nd go, fat fingers posted from the wrong account, apologies if it double posts) > On 27 Jan 2018, at 21:55, Mike Loewen via cctalk > wrote: > > On Sat, 27 Jan 2018, Adrian Graham via cctalk wrote: > >> I?d like to thank whoever it was who added the Abit K8V

RE: TESTFDC

A 380Z, nice! I used to use those when I was at University. My final year project used one connected to a research machine called MU6-G for diagnostics. All the registers in the machine were connected up as one enormous shift register, so you could get and set any register in the machine from

Re: DEC H7260 PSU fault

On Sat, Jan 27, 2018 at 4:34 PM, Jules Richardson via cctalk wrote: > Success! Congratulations! > I'd left the rear panel console settings how they were when I got the > machine, I mean 'T' for terminal, right? Wrong... arrow for terminal, 'T' > for "sit there

Re: DEC H7260 PSU fault

On Sat, Jan 27, 2018 at 2:02 PM, Ethan Dicks via cctalk wrote: > On Sat, Jan 27, 2018 at 4:34 PM, Jules Richardson via cctalk > wrote: >> Success! > > Congratulations! > >> I'd left the rear panel console settings how they were when I got the >>

Re: KK11-A / PDP-11/34 Cache module print set

> From: Marc Howard > what's the difference between a KK11-A and KK11-B? KK11-A -> -11/34 KK11-B -> -11/44 Noel

RE: DEC H7260 PSU fault

> -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Jules > Richardson via cctalk > Sent: 27 January 2018 23:39 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: DEC H7260 PSU fault > > On 01/27/2018 04:02

Re: 3 computing events

On 2018-01-27 8:16 PM, Murray McCullough via cctalk wrote: > Three ‘computing’ events are happening: > > > > 1) The i-Pad ... > > > > 2) Bitcoin mining – The energy usage is extreme because of GPUs. Was > 16-bit computer era, employing the 80287, such an energy hog? It's extreme

Re: DEC H7260 PSU fault

On 01/27/2018 04:02 PM, Ethan Dicks wrote: On Sat, Jan 27, 2018 at 4:34 PM, Jules Richardson via cctalk wrote: Success! Congratulations! ish... :-) It seems that my DHV11 board is bad - the system stalls on the PSU tests with it plugged in. The TK50 drive sits

Re: TESTFDC

> On 27 Jan 2018, at 22:58, Mike Loewen via cctalk > wrote: > > On Sat, 27 Jan 2018, Adrian Graham via cctalk wrote: > Now where did I put that 8? drive... >>> >>> I'm using a Tandon 848 on mine. >> >> My pair are Tandons, they?re in a CPT8500 word processor

Re: DEC H7260 PSU fault

On Sat, Jan 27, 2018 at 5:13 PM, Glen Slick wrote: >> Just be sure to follow the grant chain - the BA23 and BA123 have a >> hybrid backplane where the first few slots are CD slots and the rest >> are serpentine (3 CD slots for BA23, 5 CD slots for BA123). > > First 4 slots

Re: TESTFDC

On Sat, 27 Jan 2018, Adrian Graham via cctalk wrote: Now where did I put that 8? drive... I'm using a Tandon 848 on mine. My pair are Tandons, they?re in a CPT8500 word processor which I?d also like to get going at some point. Any tips on coaxing them back into life? Nothing

chyron 8 inch disks chyron IV - m4100ex-- sports disc - fonts - font load front compose etc

chyron 8 inch disks chyron IV -  m4100ex--   sports disc - fonts - font load  front compose etc does anyone had   this  chyron and  firing it  up?   some  discs  nice  and   clean come  have     foam  stuck to envelopes ..   maybe  you have something  we  can use  here. since  I dont think  we  

Re: TESTFDC

Another vote for the FDADAP. Could've built my own, but it's reasonably priced, handles TG43, does RX50, and I like supporting John's work. Thanks, Jonathan On Sat, Jan 27, 2018 at 7:06 PM, Adrian Graham via cctalk < cctalk@classiccmp.org> wrote: > > *sigh* Fat fingers again. > > > On 27 Jan

Re: Re:

I don't like most IPAs. I do like lagers and most ale's like Sierra Nevada's. Dwight From: cctalk on behalf of Paul Berger via cctalk Sent: Saturday, January 27, 2018 12:54:59 PM To: Henry Bond via cctalk

3 computing events

Three ‘computing’ events are happening: 1) The i-Pad was introduced by S. Jobs 8 yrs. ago and defined a ‘new’ computing paradigm for the masses. The reason I mention this event is because a young friend(20 yrs. old) said “That’s ancient computing!” What is one to make of classic-computing

Re: Re:

Next video: cleaning heads in fragly brewed IPA (the beer). I bet it would work too. Ultrasound in hot solvent cleans stuff that no other method can. Marc > On Jan 27, 2018, at 5:26 PM, Adrian Stoness via cctalk > wrote: > > yea ipa's are to bitter > > have u had a

Re: ADV11-A vs. ADV11-C and 22-bit Bus

> From: Mark Matlock >Any device which uses backplane pins BC1, BD1, BEl, BF1 or DC1, 001, >DEl, OF! Those last are probably typos for "DD1, DE1, DF1". > Several other pins are also tied to ground on that connector such as > BC2, BJ1, and BT1. Yeah, those are all

Re: TESTFDC

*sigh* Fat fingers again. > On 27 Jan 2018, at 22:58, Mike Loewen via cctalk > wrote: > > On Sat, 27 Jan 2018, Adrian Graham via cctalk wrote: > Now where did I put that 8? drive... >>> >>> I'm using a Tandon 848 on mine. >> >> My pair are Tandons, they?re in a

Re: DEC H7260 PSU fault

With the drive actually hooked up to the controller, I'm getting "?54 RETRY" messages when it's trying to boot - however, I'm not entirely sure what device it's trying to boot from! Maybe it's attempting the TK50, or via Ethernet. I still need to read up on that and work out how to force it to

Re: DEC H7260 PSU fault

On 01/27/2018 02:43 PM, Jules Richardson via cctalk wrote: Well, there's someone's hand-written sticker on the top saying it's a lowly RD51 - however the actual p/n sticker says it's an RD53-A and the defect table lists it as ST506, 85MB. Of course it probably doesn't work anyway ;-) The

Re: DEC H7260 PSU fault

On 01/27/2018 12:04 PM, Jules Richardson via cctalk wrote: > On 01/26/2018 07:15 PM, Jules Richardson via cctalk wrote: >> After that... well, I need to work out how to get the entire supply >> assembly to start up while it's open, so that I can work on it >> outside the >> machine - then I can at

Re: DL10 documentation

FWIW, Found these bits in the TOPS-10 7.04 sources: http://pdp-10.trailing-edge.com/tops10_704_monitoranf_bb-x140c-sb/01/10,7/anf10/chk11.p11.html Search for ";DETERMINE THE DL10 BASE ADDRESS" Which tries setting the following bit pattern: DL.CNX!DL.CPE!DL.CWC!DL.11C Those bits and others can