M7819 DZ11 boards and others for parts
I have a ton of DEC boards that I will probably never use. I sell off what I can, when I can, but have large quantities of some and no need for them. I have to do something and I like recycling cans and plastic, but not computer parts. If anyone can use these or any other DEC board, feel free to contact me off list. I would prefer to sell in qty, but will consider all requests. If you are parting them out and don't want them, I will reduce the price and keep the fingers. Thanks, Paul
Re: 5 1/4 diskettes available
On 7/11/19 12:29 AM, Guy Dunphy via cctalk wrote: > At 08:27 PM 10/07/2019 -0700, Grumpy Ol' Fred wrote: >> The 5.25" diskette or "Mini-diskette" is bar napkin size, because Dr. Wang >> said that 8" diskettes were too big. I have not been able to track down >> WHICH bar. > > Perhaps the same bar where someone bet L Ron Hubbard that he couldn't create > a religion? > The only successful Sci Fi he ever created. bill
Re: 5 1/4 diskettes available
On 7/10/19 2:32 PM, Will Cooke via cctalk wrote: > BG Micro, a surplus electronics dealer I buy from sometimes, has diskettes > for sale. I don't know anything about them, but thought it may be of > interest. I have no affiliation other than being a customer on their mailing > list. > Here is a link to the site: > https://www.bgmicro.com/4-pack-of-5-25-floppy-diskettes-with-sleeves.aspx > > Will > That's not the same BG Micro we bought stuff from in the early 80's, is it? bill
Re: 5 1/4 diskettes available
> On July 11, 2019 at 9:10 AM Bill Gunshannon via cctalk > wrote: > > > On 7/10/19 2:32 PM, Will Cooke via cctalk wrote: > > BG Micro, a surplus electronics dealer I buy from sometimes, has diskettes > > for sale. I don't know anything about them, but thought it may be of > > interest. I have no affiliation other than being a customer on their > > mailing list. > > Here is a link to the site: > > https://www.bgmicro.com/4-pack-of-5-25-floppy-diskettes-with-sleeves.aspx > > > > Will > > That's not the same BG Micro we bought stuff from in the > early 80's, is it? > > bill The one with the yellow photocopied catalog? That's the same one. The owner/founder passed away a year or two ago and I believe his daughter is running it now. Will "A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away." -- Antoine de Saint-Exupery "The names of global variables should start with // " -- https://isocpp.org
Re: KL10-A/KL10-B differences
> From: Eric Smith
> two separate backplanes that are combined for the RH20s (if
> present), one backplane for the A through D positions (upper 2/3 of
> each module slot), and one for E and F.
How odd. DEC was quite happy to do hex backplanes elsewhere, and it looks
from the photo (EK-108OU-PD-002, pg. 3-8) like the MASSBUS connector are
wired to both backplanes, so they had to stay together.
>> On the -PA to -PV upgrade, could the backplane really be done with
>> some wraps? I ask because I saw in one manual, talking about a
>> KL10-C to -PV upgrade, it calls for a backplane swap-out.
EK-0KL20-IN-001 ("KL10-Based DECSystem-20 Installation Manual"), in
Section 10.2 "KL10-PV Upgrade Procedure for KL10-C", if anyone wants to
look.
> I'm not entirely sure, so I easily could have been mistaken. I know
> -PV to -PW just needs some wraps. -PA to -PV may have required more
> significant backplane changes. Definitely they have different part
> numbers for the -PA and -PV backplane assemblies.
Yeah, DEC was quite happy to have the FS guys do wirewrap on install (e.g.
for the NIA20). So my guess is that if the default upgrade for at least
one -PA to -PV (above) was to replace the backplane, that would have been
the standard way, because of some issue.
Whether it was just too many wires to do manually, or if there were also
trace issues, it would be interesting to know. Oh, it's also possible that
since the -PA to -PV involved a faster clock, I wonder if some backplane
lines turned into twisted pair, or coax?
Noel
Re: 5 1/4 diskettes available
> On 7/10/19 11:32 AM, Will Cooke via cctalk wrote: > > > https://www.bgmicro.com/4-pack-of-5-25-floppy-diskettes-with-sleeves.aspx > > They have hub rings, so they are probably 360K Weren't these 89 cents when this was first posted? Well they're $1.89 now. You're altering the market!
Re: 5 1/4 diskettes available
At 03:47 PM 11/07/2019 -0500, you wrote: >> On 7/10/19 11:32 AM, Will Cooke via cctalk wrote: >> >> > https://www.bgmicro.com/4-pack-of-5-25-floppy-diskettes-with-sleeves.aspx >> >> They have hub rings, so they are probably 360K > >Weren't these 89 cents when this was first posted? Well they're $1.89 now. >You're altering the market! So they are! Oops. Sorry! Maybe they had a rush of orders, and it's not entirely my fault? Or maybe the 89c price was a typo, and my order alerted them? They confirmed my order. Fingers crossed they actually ship them, and it doesn't turn into an argument about honoring transactions. Though probably, a higher postage cost would be fair. 88 floppies and covers will weigh a bit. (Should have bought 100.) 4 Pack of 5.25" Floppy Diskettes with Sleeves COM1147 22 $0.89$19.58 Subtotal: $19.58 Shipping & Handling: $6.95 Tax: $0.00 Order Total:$26.53 That's an easily altered market. I am a lovely butterfly, fear my flapping wings! Guy
Re: 5 1/4 diskettes available
At least shipping is cheap. Never seen a 4 pack before. I still have tons of green 5.25" DD disks I picked up bulk when I got into 8 bit computers in the early 2000's. Duplicators were dumping them so cheap back then, wish I would have snagged more of the 3.5" DD back then. TZ -Original Message- From: Guy Dunphy via cctalk Sent: Thursday, July 11, 2019 7:21 PM To: Jason T ; General Discussion: On-Topic and Off-Topic Posts Subject: Re: 5 1/4 diskettes available At 03:47 PM 11/07/2019 -0500, you wrote: On 7/10/19 11:32 AM, Will Cooke via cctalk wrote: > https://www.bgmicro.com/4-pack-of-5-25-floppy-diskettes-with-sleeves.aspx They have hub rings, so they are probably 360K Weren't these 89 cents when this was first posted? Well they're $1.89 now. You're altering the market! So they are! Oops. Sorry! Maybe they had a rush of orders, and it's not entirely my fault? Or maybe the 89c price was a typo, and my order alerted them? They confirmed my order. Fingers crossed they actually ship them, and it doesn't turn into an argument about honoring transactions. Though probably, a higher postage cost would be fair. 88 floppies and covers will weigh a bit. (Should have bought 100.) 4 Pack of 5.25" Floppy Diskettes with Sleeves COM1147 22 $0.89$19.58 Subtotal: $19.58 Shipping & Handling: $6.95 Tax: $0.00 Order Total:$26.53 That's an easily altered market. I am a lovely butterfly, fear my flapping wings! Guy --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
