Re: Greaseweazle

I have a Greaseweazle F7+, and I have an fdadap as well (and a Shugart 8" drive), a 5 1/4" drive (my main target, the 8" follows), and 3.5" drives (not really a target - the 3.5" HD floppies are mostly unreadable anyway). So, I'm ready to go.. except that due to sleep deprivation I managed to dump

Re: PDP-11/70 debugging advice

On Sun, Jan 31, 2021 at 10:03 PM Fritz Mueller wrote: > > > > On Jan 31, 2021, at 8:19 PM, Josh Dersch wrote: > > Well, what's interesting here is that on my system, switch S4 (MAINT > STPR) steps the processor with switches S1 and S2 set to *any* > configuration. > > Hmm, would expect to see S2

Re: Greaseweazle

On Mon, 1 Feb 2021, Fred Cisin wrote: If you are READing 8" disks, and ONLY READing, then you can get away with a simpler caable. The main time that you might need the fdadap is for TG43 for writing. But, the fdadap is a convenient way to not have to make a cable. You only need the TG43 sign

Re: Greaseweazle

On Mon, 1 Feb 2021, Al Kossow wrote: Imagedisk, even though it spends way too much time with the heads spinning on the media at least does real-time retries. the problem is you also need to be able to stop and assemble a complete image by splicing together multiple partial attempts. Well, isn

Re: APL\360

On Mon, Feb 01, 2021 at 08:15:25PM +0100, Liam Proven via cctalk wrote: > On Mon, 1 Feb 2021 at 20:00, Fred Cisin via cctalk > wrote: >> I had always been told, "A pint is a pound, the world around." "The world" meaning "the USA", of course. > Aha! Does that mean a pint of water weighs 1lb? Yes

Re: Greaseweazle

On 2/2/21 12:44 AM, Christian Corti via cctalk wrote: You only need the TG43 signal for old drives. A VERY small subset of 8" drives, actually. It can also control the read channel filter on some, with a jumper.

Re: Greaseweazle

On 2/2/21 12:55 AM, Christian Corti via cctalk wrote: I do this with my Linux implementation of IMD, and I do this with my floppy version of the mfmreader Good for you Most software doesn't work that way.

Re: Greaseweazle

On 2/1/21 10:57 PM, jim stephens via cctalk wrote: Of course all the questions that any media backup, archival, copy, etc. are generating is there, but there is no embargo on the information. The group is private So someone should mirror it. I'm not having anything to do with Facebook.

Re: Greaseweazle

On 2/2/21 2:28 AM, Al Kossow via cctalk wrote: On 2/2/21 12:55 AM, Christian Corti via cctalk wrote: I do this with my Linux implementation of IMD, and I do this with my floppy version of the mfmreader Do you make these available online? I found your version of IMD here ftp://computermuseu

Re: Greaseweazle

On 2/2/21 2:52 AM, Al Kossow via cctalk wrote: I hate the fact that there are dozens of siloed projects in this problem space. Including cctlk. There is actually a medialab channel on the cctlk discord

Re: Greaseweazle

On 2/2/21 2:54 AM, Al Kossow via cctalk wrote: On 2/2/21 2:52 AM, Al Kossow via cctalk wrote: I hate the fact that there are dozens of siloed projects in this problem space. Including cctlk. There is actually a medialab channel on the cctlk discord and before IMD there was Eric's DMK image

Re: Greaseweazle

On 2/2/21 3:03 AM, Al Kossow via cctalk wrote: On 2/2/21 2:54 AM, Al Kossow via cctalk wrote: On 2/2/21 2:52 AM, Al Kossow via cctalk wrote: I hate the fact that there are dozens of siloed projects in this problem space. Including cctlk. There is actually a medialab channel on the cctlk disc

Re: Greaseweazle

On 2/1/21 10:57 PM, jim stephens via cctalk wrote: The biggest problem imaging programs had trouble with was how to duplicate whatever errors were on the disk (as in abnormal patterns) when making a copy. Copy protection is just a pain in the ass. A tiny, tiny fraction of what I work with has

Re: Greaseweazle

On 2/2/21 3:12 AM, Al Kossow via cctalk wrote: A tiny, tiny fraction of what I work with has any and I'm very happy it is mostly used on consumer computers which are being archived by others so I don't have to. A great example is this little Apple II nightmare https://twitter.com/bitsavers/s

Re: Greaseweazle

On Mon, 1 Feb 2021, Al Kossow via cctalk wrote: On 2/1/21 4:13 PM, Chuck Guzis via cctalk wrote: any moderately capable modern MCU can do the job. and it is the software and the knowledge of what you need to do when recovering media in volume these guys have no clue about How about helping

Re: Greaseweazle

On Mon, 1 Feb 2021, Chris Hanson via cctalk wrote: On Feb 1, 2021, at 5:07 PM, Antonio Carlini via cctalk wrote: Indeed. The important part is that someone's written some firmware. Oh, and it's cheap too, of course. And that it's something available for the community to work with and impr

Re: Greaseweazle

At 08:32 AM 2/2/2021, geneb via cctalk wrote: >On Mon, 1 Feb 2021, Al Kossow via cctalk wrote: >>and it is the software and the knowledge of what you need to do when >>recovering media in volume these guys have no clue about > >How about helping out instead of bitching from the sidelines? I was qu

Re: Greaseweazle

> On Feb 2, 2021, at 8:51 AM, John Foust via cctalk > wrote: > > How else will products improve? I don’t know what planet you’re from but here on modern-day Earth we don’t improve anything anymore. We just bitch and scream on the internet and find reasons to drive people out so nobody con

Re: Greaseweazle

On 2/2/21 6:51 AM, John Foust via cctalk wrote: I was quite eager to hear Kossow's insights. And I'd like to hear what Chuck's workflow and software look like. He's had decades more experience than me, but no one complains when he just says "throw a microcontroller at it" and walks away.

Re: Greaseweazle

On Tue, 2 Feb 2021, John Foust via cctalk wrote: At 08:32 AM 2/2/2021, geneb via cctalk wrote: On Mon, 1 Feb 2021, Al Kossow via cctalk wrote: and it is the software and the knowledge of what you need to do when recovering media in volume these guys have no clue about How about helping out i

Flip-Chip selloff

I don't have any equipment that uses them any more, so I'll be ebaying off my A-W series flip chips over the next few days. The W's and PT08 boards are up now https://www.ebay.com/itm/184647476832 https://www.ebay.com/itm/184647420812

Re: Greaseweazle

On 2/2/21 7:18 AM, Al Kossow via cctalk wrote: > On 2/2/21 6:51 AM, John Foust via cctalk wrote: > >> I was quite eager to hear Kossow's insights. > > And I'd like to hear what Chuck's workflow and software look like. > He's had decades more experience than me, but no one complains when > he just

Re: Flip-Chip selloff

On Feb 2, 2021, at 9:19 AM, Al Kossow via cctalk wrote: > > I don't have any equipment that uses them any more, so I'll be ebaying off my > A-W series flip chips over the next few days. The W's and PT08 boards are up > now > > https://www.ebay.com/itm/184647476832 > https://www.ebay.com/itm/184

Re: Flip-Chip selloff

Might be a good time: I remember my dad saying I should encase each one in lucite plastic and sell them as paperweights. That was 30 years ago but it would have preserved them well :-) C (Went from 3 8/I's to 2 8/L's so progress?) On 2/2/2021 1:22 PM, Zane Healy via cctalk wrote: On Feb 2, 20

re: HP Journal back issues

You can find HP Journal issues at https://worldradiohistory.com/HP-Journal.htm The World Radio History site is a fantastic resource in general, I use it regularly. **Richard

Re: Greaseweazle

On 2021-02-02 12:20, Chuck Guzis via cctalk wrote: > When I last proposed the STM32F407, I was met with "Oh, but the Blue > Pill is cheaper". Okay, use the Blue Pill, but my code won't work with > it. Not once has anyone contacted me and said "I'd like to try my hand > at doing this, what can yo

NOT "Re: APL\360"

TL;DR: getting tired of separating the wheat from the chaff I have an odd but potentially useful idea for the list server ... Until we have an AI that can properly read a message and re-write the subject line, perhaps the list server would *auto generate* a new subject line after, say, the 29th

Re: Greaseweazle

> Uh, I think over the decades, I've contributed a bit, no? I recently > made my own Catweasel source code public, for example. I've helped out > the guy with the fluxengine puzzle out a couple of formats, including > the Brother 240K one that few seem to have sussed out. > I am still using a C

Re: DEC backplane power connectors

> I'm too burned out to look at the engineering drawings and get the part > number to confirm; I'll do that 'soon'. The BA11-K FMPS gives the male shell part numbers as 12-09350-06 and -15; the DD11-C lists the female shell numbers as 12-09351-06 and -15. Those look like they are DEC numbe

Re: Flip-Chip selloff

I am down to 2 vaxes and an 11, along with 10 Alphas, a pro380 and two DECMante II boxes. bb On Tue, Feb 2, 2021 at 1:48 PM Chris Zach via cctalk wrote: > > Might be a good time: I remember my dad saying I should encase each one > in lucite plastic and sell them as paperweights. That was 30 years

Re: Flip-Chip selloff

Oh, and 2 8/a boxes, but i did move out 15 Vaxes of various times and an 8e that someone refuse to admit I gave them. bb On Tue, Feb 2, 2021 at 4:13 PM Bob Smith wrote: > > I am down to 2 vaxes and an 11, along with 10 Alphas, a pro380 and two > DECMante II boxes. > bb > > On Tue, Feb 2, 2021 at

Re: Flip-Chip selloff

What do I have... Decsystem/20 CPU box+supply (blt.ai.mit.edu), pdp11/05/83/24/23+/150, 2 8L's, an 8/e, 3 RL02, RM80, RX02,TK50,2 Professional 380's. And a Minc-11/MiniMINC. Several Perqs, that HP 1000e thing, and a few dozen MFM disks. A pair of Sun 386i's, Nextstation, NS Turbo, Turbo Colo

Re: Flip-Chip selloff

I think it's good to hold onto that which is realistic to support, no point in holding hardware hostage in a rodent and moisture-vulnerable old garage. We don't live forever. b On Tue, Feb 2, 2021 at 5:57 PM Chris Zach via cctalk wrote: > What do I have... > > Decsystem/20 CPU box+supply (blt.a

Re: Flip-Chip selloff

Since we're talkin' sell-off... on the off chance that anyone has a TC11 or TC01/08 gathering dust (for something less than eBay prices), I, uh... could use one. Along with many other people, I suppose. - Josh On Tue, Feb 2, 2021 at 3:12 PM Bill Degnan via cctalk wrote: > I think it's good to

Re: Flip-Chip selloff

I can pretty much support any of the Dec stuff, with all of the pdp11's running now the next step is to get the 8/L working, then the 20. The Perqs and other stuff will be re-homed or sold. But I'm not giving things to "museums". At this point between museums blowing up, being shut down, selli

Re: Greaseweazle

On Tue, Feb 2, 2021 at 2:08 AM Antonio Carlini via cctalk wrote: > > On 02/02/2021 00:13, Chuck Guzis via cctalk wrote: > > > > There's also a similar implementation using a very inexpensive Cypress > > PSOC 6 ARM card that mounts on a 3.5" floppy connector (no cable). > > That would presumably be

Re: Flip-Chip selloff

On Tue, Feb 02, 2021 at 05:57:27PM -0500, Chris Zach via cctalk wrote: > Probably a lot more. "Probably" ??? Sheesh. I thought *I* had too many projects. mcl

Re: Flip-Chip selloff

Chris said > I can pretty much support any of the Dec stuff, with all of the pdp11's > running now the next step is to get the 8/L working, then the 20. The > Perqs and other stuff will be re-homed or sold. > > But I'm not giving things to "museums". At this point between museums > blowing up, bein

Re: APL\360

On 2/1/2021 12:15 PM, Liam Proven via cctalk wrote: On Mon, 1 Feb 2021 at 20:00, Fred Cisin via cctalk wrote: I had always been told, "A pint is a pound, the world around." Aha! Does that mean a pint of water weighs 1lb? Interesting. I did not know. Who Knows? It just works of beer or ale

Re: Flip-Chip selloff

I've had 30+ years to acquire this "stuff". :-) On 2/2/2021 4:38 PM, Mark Linimon wrote: On Tue, Feb 02, 2021 at 05:57:27PM -0500, Chris Zach via cctalk wrote: Probably a lot more. "Probably" ??? Sheesh. I thought *I* had too many projects. mcl

Re: APL\360

On 2/1/2021 6:07 AM, Peter Corlett via cctalk wrote: On Wed, Jan 20, 2021 at 02:05:37PM -0700, ben via cctalk wrote: [...] I don't see languages in general have improved since the the mid 1960's. Hardware and language models don't reflect each other, and don't have extendable data sizes and type

Re: Greaseweazle

On Tue, Feb 02, 2021 at 09:20:01AM -0800, Chuck Guzis via cctalk wrote: [...] > When I last proposed the STM32F407, I was met with "Oh, but the Blue Pill > is cheaper". Okay, use the Blue Pill, but my code won't work with it. Not > once has anyone contacted me and said "I'd like to try my hand at d