Re: UNIBUS/QBUS interface chips Was: Re: MEM11 update

On Mon, Dec 5, 2016 at 6:53 PM, allison wrote: > A bunch of us old digits (former dec engineers) got together and were > talking > about old systems and the thing that stood out is a general dislike for > having > to use the limited set of bus interface chips when there were

Re: Searching for a lost Macintosh TV (Texas)

On 12/5/2016 6:49 PM, Tothwolf wrote: I would also just like to know that the machine didn't end up scrapped. You might look up John Keys in the Houston area for other collectors around there. He may still listen on the list. Not sure if he is active, but he had a lot of connections there.

Re: UNIBUS/QBUS interface chips Was: Re: MEM11 update

On 12/05/2016 06:35 PM, Toby Thain wrote: > On 2016-05-02 9:48 AM, Noel Chiappa wrote: >> > From: Pete Lancashire >> >> > Do you or someone have a list of all the Unibus bus chips ? >> >> I have seen the following bus interface chips used on DEC UNIBUS boards: >> >> Drivers: >> >> 8881 -

HP 9872 Refurbishment

I hauled out my second 9872C today to clean it of rodent leavings and to scavenge the high voltage chart hold power supply board for my first 9872C. The table has some gouges in the surface, which appears to be a plastic film adhered to the table surface. Does anyone have experience repairing

Re: HP 9872 Refurbishment

On Mon, Dec 5, 2016 at 11:20 AM, Craig Ruff wrote: > Also, since I have it apart, I thought it might be good to image the > firmware ROM set. They are marked Mostek MK36647N-5 and MK36648N-5, along > with the HP part numbers. From the schematic, they appear to be 5V 8KB >

Re: Searching for a lost Macintosh TV (Texas)

On Mon, 5 Dec 2016, Ian Finder wrote: Props for for having a good sense of humor. It made me laugh. Seriously though I hate to say it but your quest feels pretty damn futile. I wish you luck either way, and would offer you my MacTV but it is long gone. If you can provide names of unique

Searching for a lost Macintosh TV (Texas)

Props for for having a good sense of humor. It made me laugh. Seriously though I hate to say it but your quest feels pretty damn futile. I wish you luck either way, and would offer you my MacTV but it is long gone. If you can provide names of unique files or something that was on the drive-

Troubleshooting spooky & intermittent instability after power-up: Symbolics XL1200

Hi folks, I know this is a long shot but... I'm having a rather curious issue with one of my Symbolics XL 1200 CPUs, which I suspect may have a far more general cause. I have narrowed the issue down to the specific Merlin II CPU card I'm running- not the RAM, Jumper, I/O, backplane, power supply

Re: Searching for a lost Macintosh TV (Texas)

On Mon, 5 Dec 2016, Ian Finder wrote: They sold 10,000 Apple TVs. That's a lot. You lost track of one ten years ago, and have given no real methodology for discerning it from any other- the number out there with OS 7.6 or 8mb of ram will be significant. Perhaps you should go door-to-door,

Re: Black anti-static foam corrosion

On Sat, 3 Dec 2016, Fred Cisin wrote: On Sat, 3 Dec 2016, drlegendre . wrote: Interesting find, thanks for posting this. I've seen this as well. with a batch of old ICs which had been stored (in black foam) for some 20-30 years. The leads kind of just stayed behind in the foam.. My assumption

Re: Searching for a lost Macintosh TV (Texas)

They sold 10,000 Apple TVs. That's a lot. You lost track of one ten years ago, and have given no real methodology for discerning it from any other- the number out there with OS 7.6 or 8mb of ram will be significant. Perhaps you should go door-to-door, or hang flyers. It would probably yield

Searching for a lost Macintosh TV (Texas)

I'm not really active in any of the classic computing communities apart from classiccmp, so I would appreciate it if others could pass this message around and see if this computer ended up in the hands of a fellow collector. A good friend of mine who lived in Spring, TX (north of Houston)

Re: Double Buffer RK11-C

On Mon, Dec 5, 2016 at 6:40 PM, Noel Chiappa wrote: > > From: Fritz Mueller > > > Also, clues about an 11/20 interface for the FP11-B that were noticed > > recently. > > I don't recall this; more details, if possible? Thanks! > > Noel You should also

Re: Double Buffer RK11-C

> From: Fritz Mueller > Also, clues about an 11/20 interface for the FP11-B that were noticed > recently. I don't recall this; more details, if possible? Thanks! Noel

Re: HP1631D Logic Analyzer..Software???

> > Search for 1630 on http://www.ko4bb.com/ and there is a "HP 1630A D > 1631A D Logic Analyzer EPROM 14-Oct-1985-HP 1630A-D 1631A-D ROMs.zip" > file with these EPROM images, which is supposed to be the latest > version listed in the service manual for the 1630A, 1630D, 1631A, > 1631D (but not

Re: HP1631D Logic Analyzer..Software???

On Mon, Dec 5, 2016 at 6:17 PM, Glen Slick wrote: > Model conversion table > Note (1) > 1630A/D shipped before February 1, 1985 uses an HP-IL cassette drive > for mass storage. > 1630A/D shipped after February 1, 1985 uses an HP-IB disc drive for > mass storage. > Ah, that

Re: HP1631D Logic Analyzer..Software???

On Mon, Dec 5, 2016 at 4:50 PM, Eric Smith wrote: > > IIRC from many years ago, different versions of the 163x firmware support > the 82161A tape drive, the 9114A floppy drive, and remote control. I don't > think there's any version that supports both tape and floppy. I'm not

Re: UNIBUS/QBUS interface chips Was: Re: MEM11 update

On Mon, Dec 5, 2016 at 4:35 PM, Toby Thain wrote: > Has anyone looked at the TI Signal Switch family for QBus? (hat tip Ian > Finder) > I use those for interfacing 5V TTL-compatible stuff to 3.3V logic. It doesn't really solve the major Qbus problems. In particular,

Re: HP1631D Logic Analyzer..Software???

On Mon, Dec 5, 2016 at 12:45 PM, Glen Slick wrote: > But it also seemed to detect a sector number 17 with no data in each > track. Is that a normal 9121 low level format? > It's normal for the HP 3 1/2" floppies to have an extra sector, which is used for wear tracking, but

Re: HP1631D Logic Analyzer..Software???

On 12/5/2016 2:45 PM, Glen Slick wrote: On Mon, Dec 5, 2016 at 11:31 AM, Holm Tiffe wrote: I've heard from a friend that another friend that died in the menatime, had managed to copy HP9121 disks on a plain PC with something like Super Copy. I tried using ImageDisk on

Re: UNIBUS/QBUS interface chips Was: Re: MEM11 update

On 2016-05-02 9:48 AM, Noel Chiappa wrote: > From: Pete Lancashire > Do you or someone have a list of all the Unibus bus chips ? I have seen the following bus interface chips used on DEC UNIBUS boards: Drivers: 8881 - Sprague, Signetics - Quad NAND Receivers: 380 - Signetics - Quad

Re: HP1631D Logic Analyzer..Software???

On 12/5/2016 2:31 PM, Holm Tiffe wrote: Hey Holm; I'm _pretty sure_ I have the Z80 disassembler for the 1630. I have a 1630G and a 9121, but unfortunately I was never able to get the 1631 to talk to the 9121 - I don't know if the drive was bad as I have no other way to test it. Has anyone

Re: Odd "endianness" [was Re: RE: Base 64 posts to the list]

Charles Anthony wrote: > PDP-10: 36 bit word, 5*7bit characters. Mouse wrote: >> You mean like any 36-bit machine? > No, they usually either ran as 6 6-bit bytes or 4 9-bit bytes, from > what I understand. As Charles wrote, the PDP-10 commonly uses 7-bit bytes for ASCII text, but that's only

Re: Odd "endianness" [was Re: RE: Base 64 posts to the list]

>>> Middle-endian FTW >> That makes me wonder: was there any hardware that used an endianness >> such that conversion didn't loop with period 2? > Not quite the same thing but weren't longwords on the PDP-11 > little-endian for the bytes within the word but big-endian for words > within the

Re: Odd "endianness" [was Re: RE: Base 64 posts to the list]

>> Or how about architectures not using a word length that's an >> integral number of bytes? > You mean like any 36-bit machine? No, they usually either ran as 6 6-bit bytes or 4 9-bit bytes, from what I understand. (The era of 36-bit machines was before "byte" had drifted to its current

Re: cctalk Digest, Vol 30, Issue 5

least.. but yeah.. might be impossible to ever really know. I'm just wondering why the price jumped to $40+ each all of a sudden! a very large number of schlock IC sellers all communicate with each other. They all have a continuous stream of wants or needs that they exchange. but they make

Re: Odd "endianness" [was Re: RE: Base 64 posts to the list]

On Mon, Dec 5, 2016 at 11:14 AM, Dave Wade wrote: > > -Original Message- > > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of David > > Bridgham > > Sent: 05 December 2016 18:37 > > To: General Discussion: On-Topic and Off-Topic Posts > >

Re: HP1631D Logic Analyzer..Software???

On Mon, Dec 5, 2016 at 11:43 AM, Tony Duell wrote: > > The HP1630 has HPIL as standard. IIRC you can configure it to either be > remote-controlled over HPIB (when it will use HPIL for mass storage devices > like this tape drive) or vice versa. > > But I seem to remember

Re: HP1631D Logic Analyzer..Software???

On Mon, Dec 5, 2016 at 11:31 AM, Holm Tiffe wrote: > I've heard from a friend that another friend that died in the menatime, had > managed to copy HP9121 disks on a plain PC with something like Super Copy. I tried using ImageDisk on a PC to read the two HP 1630 3.5-inch

Re: HP1631D Logic Analyzer..Software???

On Mon, Dec 5, 2016 at 7:39 PM, Holm Tiffe wrote: > Glen Slick wrote: > >> On Sat, Dec 3, 2016 at 12:13 PM, Holm Tiffe wrote: > > Interresting, I've don't even knew that such tape drives existed. It's the little HPIL tape drive that was first used with

Re: HP1631D Logic Analyzer..Software???

Holm Tiffe wrote: > Glen Slick wrote: > > > On Sat, Dec 3, 2016 at 12:13 PM, Holm Tiffe wrote: > > > Hi folks, > > > > > > I have an HP1631D Logic Analyzer for some years now und got an HP9121 > > > dual Floppy drive that fits to it yesterday. > > > I've tested the drive,

Re: HP1631D Logic Analyzer..Software???

Glen Slick wrote: > On Sat, Dec 3, 2016 at 12:13 PM, Holm Tiffe wrote: > > Hi folks, > > > > I have an HP1631D Logic Analyzer for some years now und got an HP9121 > > dual Floppy drive that fits to it yesterday. > > I've tested the drive, formating disks, storing and reading

Re: Double Buffer RK11-C

> look at the lower right line of lights on the panel: ... and three bits > of Major State; now look at the RK11-C prints, connector B32: > ... Postamble, Checksum, Data, Header, Preamble. > ... > One thing I have been wondering about is that "RK11-C" - that implies > that

Re: HP1631D Logic Analyzer..Software???

JP Hindin wrote: > > > On Sat, 3 Dec 2016, Holm Tiffe wrote: > > Hi folks, > > > > I have an HP1631D Logic Analyzer for some years now und got an HP9121 > > dual Floppy drive that fits to it yesterday. > > I've tested the drive, formating disks, storing and reading data ist > > working :-) > >

RE: Odd "endianness" [was Re: RE: Base 64 posts to the list]

> -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of David > Bridgham > Sent: 05 December 2016 18:37 > To: General Discussion: On-Topic and Off-Topic Posts > > Subject: Re: Odd "endianness" [was Re: RE: Base 64 posts to the list] >

Re: Odd "endianness" [was Re: RE: Base 64 posts to the list]

On 12/05/2016 11:51 AM, Mouse wrote: >> Middle-endian FTW > That makes me wonder: was there any hardware that used an endianness > such that conversion didn't loop with period 2? Not quite the same thing but weren't longwords on the PDP-11 little-endian for the bytes within the word but

Re: Odd "endianness" [was Re: RE: Base 64 posts to the list]

On 12/05/2016 12:17 PM, Chuck Guzis wrote: > Or how about architectures not using a word length that's an integral > number of bytes? You mean like any 36-bit machine?

Re: Odd "endianness" [was Re: RE: Base 64 posts to the list]

On 12/05/2016 08:51 AM, Mouse wrote: > > Little- and big-endian do this; conversion between them is > byteswapping, which is self-inverse. Conversion between > PDP11-endian (0x87654321 stored as 0x65 0x87 0x21 0x43) and either > big- or little-endian is also self-inverse. Is there any

Odd "endianness" [was Re: RE: Base 64 posts to the list]

>> Little-endian!!! > Middle-endian FTW That makes me wonder: was there any hardware that used an endianness such that conversion didn't loop with period 2? Little- and big-endian do this; conversion between them is byteswapping, which is self-inverse. Conversion between PDP11-endian

Re: RE: Base 64 posts to the list

On 5 December 2016 at 15:35, Cameron Kaiser wrote: > emacs sucks! I agree. So does Vi. > *waits patiently* There, does that help? :-) -- Liam Proven • Profile: https://about.me/liamproven Email: lpro...@cix.co.uk • Google Mail/Talk/Plus: lpro...@gmail.com

Re: RE: Base 64 posts to the list

On Mon, Dec 05, 2016 at 07:36:19AM -0800, Charles Anthony wrote: > On Mon, Dec 5, 2016 at 6:35 AM, Cameron Kaiser wrote: > > > > > Thanks for the suggestion. My delivery was set to MIME, I have changed > > it > > > > to plain text. Hopefully that will solve the problem. > >

Re: RE: Base 64 posts to the list

On Mon, Dec 5, 2016 at 6:35 AM, Cameron Kaiser wrote: > > > Thanks for the suggestion. My delivery was set to MIME, I have changed > it > > > to plain text. Hopefully that will solve the problem. > > > > What? No format flame war? What's this world coming to? > > emacs

Re: RE: Base 64 posts to the list

> > Thanks for the suggestion. My delivery was set to MIME, I have changed it > > to plain text. Hopefully that will solve the problem. > > What? No format flame war? What's this world coming to? emacs sucks! *waits patiently* -- personal:

Re: HP1631D Logic Analyzer..Software???

On Sat, 3 Dec 2016, Holm Tiffe wrote: Hi folks, I have an HP1631D Logic Analyzer for some years now und got an HP9121 dual Floppy drive that fits to it yesterday. I've tested the drive, formating disks, storing and reading data ist working :-) While reading the Users Manual of the LA I've

Re: Looking for small quantity of grip rings for Boxer fans

On 12/4/2016 8:21 PM, Ethan Dicks wrote: Has anyone had to buy grip rings for their fan refurbs before? Do these numbers sound right? Car door last saturday. Home Depot hardware, no, Ace hardware selection had the E-clips we needed in that case. The ring had disintegrated off the end of

Re: FTGH: HP 100/150 Series Memory Boards (45632, 45631)

Hi, These boards appear to have found a new home, thank you for the interest. Cheers, Hugh