Re: Convex C220 lives

On 9/18/17, 3:02 PM, "Peter Allan" wrote: > Hi Camiel, > > Nice to hear that you have the Convex C220 up and running. > > Regarding things to run on it, starting with LINPACK is probably a good idea. > However, in term of what they were actually used for back in the

Re: Apple ][ PS

I've used this one. http://store.reactivemicro.com/product/universal-psu-kit/ Michael. On Tue, 19 Sep 2017 at 6:09 am, Shoppa, Tim via cctalk < cctalk@classiccmp.org> wrote: > Local friend has an Apple ][+ with fried and cooked PS PCB. I used to > replace a capacitor and/or diode when the PS's

RE: H7878 Fails Under Even Moderate Load

Thanks for that. The slow start one sounds like an interesting avenue to explore. I have been told some of the capacitors on these tend to be bad. Finding the capacitor (if it does indeed do a slow start) will be a challenge for me. I have been reverse engineering the schematic a bit, but some

Re: 40pin Berg connectors, the DEC alphabet, and pin numbering

Bill said: AA is the 12th pin on the lower row. On Mon, Sep 18, 2017 at 8:50 PM, Steve Malikoff via cctalk wrote: Chuck said > Is pin AA == pin 1 or pin 40 ? > > When using modern replacement connectors with keys and marked pin 1, > the translation

Re: 40pin Berg connectors, the DEC alphabet, and pin numbering

> From: Charles Dickman > Is pin AA == pin 1 or pin 40 ? > ... > Did DEC have an accepted mapping between the alphabet and numbers? http://gunkies.org/wiki/DEC_asynchronous_serial_line_pinout Noel

Re: 40pin Berg connectors, the DEC alphabet, and pin numbering

AA is the 12th pin on the lower row. On Mon, Sep 18, 2017 at 8:50 PM, Steve Malikoff via cctalk < cctalk@classiccmp.org> wrote: > Chuck said > > Is pin AA == pin 1 or pin 40 ? > > > > When using modern replacement connectors with keys and marked pin 1, > > the translation seems to be pin AA ==

Re: Apple ][ PS

On 09/18/2017 03:09 PM, Shoppa, Tim via cctalk wrote: Local friend has an Apple ][+ with fried and cooked PS PCB. I used to replace a capacitor and/or diode when the PS's would do the I-can't-start-click-click but it feels like for this one, I'm gonna need a bigger boat. 20+ years ago,

Re: 40pin Berg connectors, the DEC alphabet, and pin numbering

Chuck said > Is pin AA == pin 1 or pin 40 ? > > When using modern replacement connectors with keys and marked pin 1, > the translation seems to be pin AA == pin 40. > > Did DEC have an accepted mapping between the alphabet and numbers? > > -chuck Not sure if this helps, as its the serial

Re: 40pin Berg connectors, the DEC alphabet, and pin numbering

http://www.vintagecomputer.net/teletype/asr33/M9970_TTY.pdf This is a short pdf that has a nice diagram of the 40 pin molex letters Bill Degnan twitter: billdeg vintagecomputer.net On Sep 18, 2017 8:41 PM, "Charles Dickman via cctalk" wrote: > and of course there's a

Re: 40pin Berg connectors, the DEC alphabet, and pin numbering

and of course there's a typo. Is pin A == pin 1 or pin 40 ? On Mon, Sep 18, 2017 at 8:28 PM, Charles Dickman wrote: > Is pin AA == pin 1 or pin 40 ? > > When using modern replacement connectors with keys and marked pin 1, > the translation seems to be pin AA == pin 40. > >

40pin Berg connectors, the DEC alphabet, and pin numbering

Is pin AA == pin 1 or pin 40 ? When using modern replacement connectors with keys and marked pin 1, the translation seems to be pin AA == pin 40. Did DEC have an accepted mapping between the alphabet and numbers? -chuck

Midwest road trip

I forgot to mention a couple of weeks ago that I was taking a road trip to get out the Texas heat. Now that I've fulfilled my social obligations in Minnesota, I'm going to work my way over to Cleveland and then Pittsburg. I do have the pickup truck with me so if someone needs to move stuff

Re: WTB: SMD drive

On 9/18/2017 12:22 PM, Camiel Vanderhoeven via cctalk wrote: (these are only 68 MB disks, the smallest disk supported on the Convex is the 300 MB CDC drive) Are these EMD drives?  They had the higher rotational rate, and included up to 1.2gb drives in the line. Our controller and CRC chip

Apple ][ PS

Local friend has an Apple ][+ with fried and cooked PS PCB. I used to replace a capacitor and/or diode when the PS's would do the I-can't-start-click-click but it feels like for this one, I'm gonna need a bigger boat. 20+ years ago, complete aftermarket power supply replacements for Apple ][

Re: WTB: SMD drive

On 9/18/17, 3:16 PM, "cctech on behalf of Andrew Back via cctech" wrote: >On 18/09/17 19:48, Camiel Vanderhoeven via cctech wrote: >> Now that I have the Convex C220 completely up and running again, I¹m >> hoping to do the same

Re: WTB: SMD drive

On 18/09/17 19:48, Camiel Vanderhoeven via cctech wrote: > Now that I have the Convex C220 completely up and running again, I¹m > hoping to do the same thing for my Convex C1. I just acquired a set of > 9-track tapes containing dumped root, /usr, and /mnt filesystems for it. > Once I obtain a

Re: H7878 Fails Under Even Moderate Load

hello, well it's difficult without the piece in hands to understand the circuit, and without the schematic, but I could give a try. 1) On a switching PSU, only one output is really stabilized, here it seems 5v. The other outputs are "unregulated", but in some way related to the stabilized one,

RE: Convex C220 lives

Hi Camiel, Nice to hear that you have the Convex C220 up and running. Regarding things to run on it, starting with LINPACK is probably a good idea. However, in term of what they were actually used for back in the 1980's, I know that they were popular with the radio astronomy community, starting

WTB: SMD drive

Now that I have the Convex C220 completely up and running again, I¹m hoping to do the same thing for my Convex C1. I just acquired a set of 9-track tapes containing dumped root, /usr, and /mnt filesystems for it. Once I obtain a suitable drive, I could connect it to the C220, restore the

Re: Chasing Digiac...

On Mon, 18 Sep 2017, Chuck Guzis via cctalk wrote: From what I can determine off the web, Digiac made quite a range of training tools, both analog and digital. One particular one could be a prize for some collector--a 25-bit (!) mini capable of running FORTRAN:

Free for pick up - West Chester, Ohio (Cincinnati area) - DEC/Compaq/HP

I'm moving from SW Ohio to the Dallas - Fort Worth area. I have a storage unit and basement full of stuff I can't take and I'm looking for someone that wants it. Hopefully in one big load but if I have to I will piece it out. There are two deadlines - one is impossibly close. I'm leaving

Re: ICL 1501 terminal available in Sweden.

Hi Mattis, I am certainly interested, but Sweden is big Where about are they ? What kind of money is he looking for ? Best regards, Jos Dreesen /Mattis

Free Alpha Server 2100 (USA Mid Atlantic)

Hiya, Free as in Beer come and get it. Its complete including disk drives and other than dusty is in pretty good shape. I am in the Baltimore City area and it must be gone by this weekend. Or I will break it down Saturday and recycle the rest. Also I have some other stuff that is related I

Re: Free Acorn RISC OS kit offer (California, USA)

On 18 September 2017 at 16:51, Zane Healy wrote: > I can’t help but think that in the US, this belongs in a museum. I agree and that is Peter's thought as well. > > For those wanting to give RISC OS a try, it’s available for the Raspberry Pi > (and yes, that’s why I bought

Re: Free to a good home: Sun Ultra 1, Cisco routers, PDUs

On Mon, Sep 04, 2017 at 09:21:06PM -0700, Ryan Finnie via cctalk wrote: > - Two 2U BayTech RPC9E remote PDUs, 20 5-15R outlets each, L5-20P plugs. > You can control these via serial (with an odd pinout), telnet, and IIRC > SSH. Have you given these away yet? If not, can you tell me if they are

Re: Free Acorn RISC OS kit offer (California, USA)

I can’t help but think that in the US, this belongs in a museum. For those wanting to give RISC OS a try, it’s available for the Raspberry Pi (and yes, that’s why I bought a Pi). I would have thought that the RISC OS community would be appreciative of an app such as Firefox being available.

Re: Chasing Digiac...

On 09/17/2017 11:17 PM, Ed via cctalk wrote: > yep Allison - noticed the date but once posted... alas too late. too > late. > I would like to find the 1966 one by the same name though! Ed# >From what I can determine off the web, Digiac made quite a range of training tools, both analog

Re: cctalk Digest, Vol 39, Issue 15

On Sat, 16 Sep 2017, Guy Sotomayor Jr wrote: Sorry ?bout that Fred!  But it does have a good home!  ;-)  I?ve just been too busy lately to really do much with it yet. Yeah, no problem. Once I saw that you had won, I was a little less annoyed. :) I was just glad it didn't go to a

Free Acorn RISC OS kit offer (California, USA)

Peter Naulls is the creator of the Unix Porting Project, which successfully created Acorn RISC OS versions of some FOSS Unix apps such as Firefox: http://www.riscos.info/index.php/Unix_Porting_Project Alas it never really caught on as Acorn users tend to be very insular and did not understand

Re: ICL 1501 terminal available in Sweden.

In the early 1980s I was working for a large grocery chain (Checkers) here in South Africa and the ICL 15xx boxes were used as branch level machines connected via our country-wide network to the central data processing facility with ICL 2900-type machines running VME/B. The 15xx programmes were

Re: Chasing Digiac...

yep Allison - noticed the date but once posted... alas too late. too late. I would like to find the 1966 one by the same name though! Ed# In a message dated 9/17/2017 9:50:32 P.M. US Mountain Standard Time, cctalk@classiccmp.org writes: Huge temporal disconnect. The smcc