Re: Stuffing boards with pulled QFP chips

2017-03-31 Thread allison via cctech
On 03/31/2017 06:32 AM, David Griffith via cctalk wrote: >> >> I'm down to the last few P112 boards for sale and am pondering >> another run of them because demand is steady. One of the biggest >> challenges for the last run was getting the QFP-packaged 100-pin >> chips[1] in a state such that

Re: Stuffing boards with pulled QFP chips

2017-03-31 Thread allison via cctech
On 03/31/2017 02:00 PM, Paul Koning wrote: >> On Mar 31, 2017, at 1:51 PM, allison via cctech <cctech@classiccmp.org> >> wrote: >> >> On 03/31/2017 06:32 AM, David Griffith via cctalk wrote: >>>> I'm down to the last few P112 boards for sale and am

Re: Aquired PDP 11/23

2017-03-12 Thread allison via cctech
On 03/12/2017 04:56 PM, Systems Glitch via cctech wrote: >> Are dectape II tapes expensive? > TU58? They're hard to come by, but the good news is you can *emulate* them > with a PC and a serial port (or USB adapter). That's how I run XXDP on most > of my systems, and pretty much all of the

Re: Ciarcia Micromint

2017-07-02 Thread allison via cctech
On 07/02/2017 06:54 PM, Fred Cisin via cctech wrote: > On Sun, 2 Jul 2017, John Wilson wrote: >> That sounds like the MPX16? I thought the SB180 was a Z180 thing. > > You're right. > > Sorry > thinking about the wrong one. Yes for sure, as I have both SB180 and BCC180 both are Z180 based. He also

Re: PDP-8/a cleaning

2017-04-25 Thread allison via cctech
On 04/25/2017 03:45 AM, ben via cctech wrote: > On 4/24/2017 1:19 PM, Pontus Pihlgren via cctech wrote: >> Hi >> >> My PDP-8/A is up for restoration. More specifically and 8A100 according >> to it's ID plate. It is in overall "ok" shape but oh so dusty. >> >> I'd like to give it a good cleaning so

Re: PDP-8/a cleaning

2017-04-25 Thread allison via cctech
On 4/25/17 6:06 AM, Pete Turnbull via cctech wrote: On 25/04/2017 10:08, jim stephens via cctalk wrote: On 4/25/2017 1:39 AM, Pete Turnbull via cctalk wrote: "Little residue" would be more accurate, and some of that residue will be water (look up "azeotrope") - plus you need a lot of

Re: Morrow 8" disk image CP/M uploaded

2017-05-11 Thread allison via cctech
On 05/09/2017 09:56 PM, william degnan via cctech wrote: > Hi, > > I was contacted though my site by someone looking for a boot disk for their > California Computer System S-100 2200 computer with Morrow's Disk Jockey > DJ/DMA floppy disk controller. I checked and found what might be a > suitable

Re: TV Typewriter project nearing completion

2017-06-26 Thread allison via cctech
On 06/26/2017 11:29 AM, Brad H via cctech wrote: > Thanks Nick! > > I had thought about selling PCBs or creating a kit, but I lack the skill to > draft it in PCB CAD software. The boards I made come from scans of the plans > (on swtpc.com), and I really had to tweak those to get them to work.

Re: Kryoflux or Catweasle

2017-05-24 Thread allison via cctech
On 05/24/2017 02:19 PM, ben via cctech wrote: > On 5/24/2017 12:30 AM, Chuck Guzis via cctalk wrote: >> On 05/23/2017 05:31 PM, Andrew Harvey via cctalk wrote: >>> I don't think Indivudual Computers make the catweasle any more. They >>> never >>> released a 64bit Windows driver for it. >> >> In

Re: KDF 8189 processor board foobared (ebay warning)

2017-05-21 Thread allison via cctech
On 05/20/2017 06:40 PM, jim stephens via cctech wrote: > > > On 5/20/2017 3:20 PM, Paul Anderson wrote: >> Hi Jim, >> >> I have the M8189 11/23+ boards here. call me tonight if you want. >> >> Paul >> > Are there any reasonably priced boards with the processor and memory > of either the KDF or KDJ

Re: Extracting files off “unknown” 8 inch disks. Any thoughts…

2017-05-05 Thread allison via cctech
On 05/04/2017 07:39 PM, Terry Stewart via cctech wrote: >> And yet, if there were an RX02 somewhere on this VAX, I don't believe > you'd be able to read them at all... RX02 seeming more likely with a VAX. > > Interestingly PUTR, does seem to accommodate this, and the kind of system I > have set up

Re: Extracting files off “unknown” 8 inch disks. Any thoughts…

2017-05-05 Thread allison via cctech
On 05/05/2017 03:33 PM, Fred Cisin via cctech wrote: > On Fri, 5 May 2017, Bill Gunshannon via cctalk wrote: >> But I thought the problem was that most disk controllers can't do RX02. >> Everybody doesn't have a Catweasel or Cryoflux. > > That's right. > Chuck's suggestion would require that

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

2017-10-02 Thread allison via cctech
On 10/2/17 9:40 AM, william degnan wrote: ATA-IDE and SCSI (OK SASI) are about the same age but had different adoption and growth rates. Earliest SASI/SCSI was AmproLB+ and Visual 1050 with adaptor.  I have both with hard disks. FYI the Z80 powered AMPROLB+ was 1984

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

2017-10-02 Thread allison via cctech
On 10/2/17 8:22 AM, Jules Richardson via cctech wrote: On 10/02/2017 01:46 AM, Alan Perry via cctech wrote: There was a call to form the CAM (Common Access Method) Committee of X3T9.2 (SCSI-2) on 30 Sept 1988 and they first met on 19 Oct 1988. The primary goal was to come up with a SCSI

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

2017-10-02 Thread allison via cctech
On 10/2/17 10:13 AM, Jules Richardson via cctech wrote: On 10/02/2017 08:29 AM, allison via cctech wrote: On 10/2/17 8:22 AM, Jules Richardson via cctech wrote: On 10/02/2017 01:46 AM, Alan Perry via cctech wrote: There was a call to form the CAM (Common Access Method) Committee of X3T9.2

Re: Xerox 820

2017-11-22 Thread allison via cctech
On 11/21/2017 10:51 AM, Bill Gunshannon via cctech wrote: > Any interest in a Xerox 820 board that never had it's construction completed? > > It's amazing the stuff I find digging through my boxes of junk. > > bill Bill, I'm likely one of the few around that can populate it with period parts.

Re: Xerox 820

2017-11-23 Thread allison via cctech
r who got 10 of them. I think mine is >> still in storage somewhere. >> >> >> >> On Wed, Nov 22, 2017 at 4:54 PM, allison via cctech <cctech@classiccmp.org >> >> wrote: >> >>> On 11/21/2017 10:51 AM, Bill Gunshannon via cctech wrote: >>&g

Re: Drive capacity names (Was: WTB: HP-85 16k RAM Module and HPIB Floppy Drive

2017-11-17 Thread allison via cctech
On 11/16/2017 03:30 PM, Geoffrey Reed via cctech wrote: > > On 11/15/17, 9:44 AM, "cctalk on behalf of Fred Cisin via cctalk" > wrote: >> Can you name another 20 exceptions? (Chuck and Tony probably can) >> >> >> -- >> Grumpy Ol'

Re: Any difference between VAX Q-bus and PDP-11 Q-bus cards?

2017-12-07 Thread allison via cctech
On 12/06/2017 09:55 PM, Jon Elson via cctech wrote: > On 12/03/2017 10:28 AM, Aaron Jackson via cctech wrote: >> I'm looking after a VAX 4000 for a friend, which has a SCSI Q-bus card >> (M5976). If the card did not have the large metal face, would it work in >> a Q-bus PDP-11? We are not going to

Epson PX-8 specifically TF-10 problem...

2017-12-09 Thread allison via cctech
I have several Epson PX-8s and i used them.. They work well with the various wedges I have. I also Have a PF-10 which is the portable 3.5" 40 track two side floppy. The problem is it randomly does not turn the media unless I give it a push to get it turning. Things checked: * Batteries, NEW

Re: Which Dec Emulation is the MOST useful and Versatile?

2017-10-24 Thread allison via cctech
On Oct 24, 2017, at 1:44 AM, Kip Koon via cctalk wrote: Hi DEC Enthusiast's, If I were to have to decide on just one model DEC PDP system to run in a DEC Emulator, which one would be the most useful, versatile and has the most software available for it? I have only

Re: micro pdp11/83 power supply

2018-05-13 Thread allison via cctech
On 05/13/2018 01:51 AM, Waldemar Brodkorb via cctech wrote: > Hi, > > I started to revive an old Micro PDP11/83 I have for over 12 years > now. It is fully assembled and last time I tried to start the > machine it some kind of started. > My biggest issue at the moment is the power supply. > >

Re: Modifying microcode

2018-06-02 Thread allison via cctech
On 06/01/2018 02:46 PM, Antonio Carlini via cctech wrote: > On 01/06/18 18:40, Eric Smith via cctalk wrote: >> On Fri, Jun 1, 2018 at 11:08 AM, Robert Armstrong wrote: >> Eric Smith wrote: The control stores of the 11/785, 8600, and 8650 were entirely WCS. All other VAXen had

Re: Looking for North star software

2018-07-03 Thread allison via cctech
On 07/03/2018 01:58 PM, Fred Cisin via cctech wrote: > On Tue, 3 Jul 2018, Stephen Pereira via cctech wrote: >> I believe that Mike Douglas has a utility program that you can get >> into a Northstar Horizon, and then it can receive a .DSK image sent >> from the terminal and it will write the disk

Re: Looking for North star software

2018-07-03 Thread allison via cctech
On 07/02/2018 06:27 PM, Fred Cisin via cctech wrote: > On Mon, 2 Jul 2018, dwight via cctalk wrote: >> I have a machine that I'm just now bringing up. I have some boot >> software but it is TSS/A that is the accounting multi-user package. >> I'd really like the TSS/B floppies instead. I'd settle

Re: Microvax II 'primer'?

2018-01-22 Thread allison via cctech
On 1/22/18 2:18 PM, Douglas Taylor via cctech wrote: I can't believe you 'just carry it into the house' all by yourself, unless you are professional athlete. I also have a MicroVax II in the BA123 world box and it has wheels for a reason!  The damn thing weighs 130 lbs! I took it to the VCF

Re: Maxtor full-height 5.25" drives of death

2018-02-22 Thread allison via cctech
On 02/22/2018 07:45 AM, Ulrich Tagge via cctech wrote: > /Here is my list. 6x RD54 (Maxtor XT2190) >2x OK, 2x Media Error, 1x > Actuator Issue, 1x Head issue 3x RD53 (Micropolis 1325) >2x Actuator > issue, 1x actuator issue followed by spinning issue (speed sensor?) 1325s with head stuck will

Re: how good is the data reliability with CD ROM and DVD RAM?

2018-07-23 Thread allison via cctech
On 07/23/2018 09:21 AM, Devin Monnens via cctech wrote: >> I have a lot of backup here stored in CDs, and I have recently bought >> an SCSI DVDRAM unit to create new backups in caddies DVD-RAMs (of >> 4.2Gbyte each) > > what is your experience? > > > I recently disposed of a couple hundred DVD

Re: VAX 11/785 "Superstar" Backplanes

2018-09-05 Thread allison via cctech
On 09/05/2018 01:53 AM, Paul Birkel via cctech wrote: > On the 'bay: 183405165416 and 183405165414 "Scrap / Gold Recovery" > > > > Six total. One wonders what the scrappers did with the rest, and where they > came from given that the location is Goffstown, New Hampshire. > > > > paul > There

Re: Microvax II 'primer'?

2018-01-23 Thread allison via cctech
On 01/23/2018 07:58 PM, Jules Richardson via cctech wrote: > On 01/22/2018 02:05 PM, allison via cctech wrote: >> >> >> On 1/22/18 2:18 PM, Douglas Taylor via cctech wrote: >>> I can't believe you 'just carry it into the house' all by yourself, >>> unless y

Re: NEC TK-80A Ref Manual Wanted

2018-03-06 Thread allison via cctech
On 03/06/2018 12:09 PM, Bill Degnan via cctech wrote: > Looking for a reference manual to the NEC TK-80A trainer. Rev A. > > This one: > http://bugbookmuseum.blogspot.com/2015/12/computer-tk-80-single-board-8080.html > > Thanks > > Bill So happens I have one of the TK80A and the manual. 

Re: 8085 Dissasembly?

2018-04-16 Thread allison via cctech
On 04/16/2018 03:01 PM, W2HX via cctech wrote: > Hi friends. I have a 1990's vintage commercial radio system that uses an > 80C85A CPU. I am looking to hopefully modify the firmware to make some small > changes in its behavior. The firmware is contained in two EPROMS. > > > Can anyone recommend

Re: Teac Mt-2st/20D-12-u

2018-10-07 Thread allison via cctech
On 10/07/2018 01:48 PM, Craig Ruff via cctech wrote: > I used to have a SCSI interface version of that drive type, I made backups of > my Mac Plus (I think it was) hard drive. Since I don't have it currently, I > believe I gave it to a friend along with the rest of my Mac Plus peripherals. >

Re: BPK-72 or Bubble Memory Dummy Module + Seed Module

2018-10-10 Thread allison via cctech
On 10/09/2018 02:42 PM, dwight via cctech wrote: > CHM has these in their collection. Where are you located at? They don't look > really complicated. I'd think one could make one if they had a schematic. > > Dwight > > > > From: cctalk on behalf of Josh via

Teac Mt-2st/20D-12-u

2018-10-07 Thread allison via cctech
Group, I have one of these TEAC Phillips tape drives.  I have a manual: Is tape (media) available for it? What was it typically used in? How much storage was it? I was digging for some paerts and found it in my collection.  I know of no system I have that used it but someone must have done a

Re: Datasheet for a NEC Chip in DEC Professional 350

2018-11-05 Thread allison via cctech
On 11/04/2018 08:10 AM, Rob Jarratt via cctech wrote: >> -Original Message- >> From: Tony Duell [mailto:ard.p850...@gmail.com] >> Sent: 04 November 2018 12:42 >> To: r...@jarratt.me.uk; Jarratt RMA ; General >> Discussion: On-Topic and Off-Topic Posts >> Subject: Re: Datasheet for a NEC