On 2021-01-31 12:28 a.m., Glen Slick via cctalk wrote:
> On Sat, Jan 30, 2021 at 6:16 PM Nigel Johnson via cctalk
> wrote:
>> I can't go very far with the EXB8200 because I don't have a cartridge
>> for it. I am now trying the Compaq DLT4000.
>>
> You can
Thanks Noel,
Yes, I tried to repair an 11/34 once after somebody plugged a peripheral
board into a memory slot - I was doing well after 3 or 4 chip chnages,
it started to come to life, until I found the 20V went right into an
d=address line of an in-house numbered ROM!
Having been warned by angel
It's actually 568.26. Easy to work out, in Canada the gallon is defined
as being 454609 ten millionths of a cubic metre,
Nigel
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 2021-02-01 11:40
Hi all, I wonder if anybody has one with the terminators installed that
can read off the p/n for these SIPs
The manual says they are 8-pin 7 resistor 220/330 ones, but that is not
possible! To put 7 resistor pairs to 220 and 330 you need a 9-pin,
unless you have one resistor SIP for 220 and anothe
I agree. None on Digikey. The manual says 7-resistor 8 pin, which is
impossible if one resistor on each pin goes to 5V and the other to Vss,
but the sockets are actually 9-pin!
If Chuck can give me a definite part number I will be on the way. The
controller says it specifically supports an EXB
PM Nigel Johnson via cctalk
> wrote:
>> Hi all, I wonder if anybody has one with the terminators installed that
>> can read off the p/n for these SIPs
>>
>> The manual says they are 8-pin 7 resistor 220/330 ones, but that is not
>> possible! To put 7 resistor p
MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 2021-02-06 7:23 p.m., Glen Slick via cctalk wrote:
> On Sat, Feb 6, 2021 at 3:59 PM Nigel Johnson via cctalk
> wrote:
>> I stand corrected, my 8200 has 3x
On 2021-02-06 8:51 p.m., Glen Slick via cctalk wrote:
> On Sat, Feb 6, 2021 at 4:33 PM Nigel Johnson via cctalk
> wrote:
>> I have some 4608X-104-221/331L currently in my digikey shopping basket -
>> I will place order on Monday after I confirm that the two outside pins
>&g
cctalk wrote:
> On Sat, Feb 6, 2021 at 4:33 PM Nigel Johnson via cctalk
> wrote:
>> I have some 4608X-104-221/331L currently in my digikey shopping basket -
>> I will place order on Monday after I confirm that the two outside pins
>> go to Vcc and Fss and the six others go t
The 'PC' just means plastic, commercial heat rating
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 2021-02-10 2:43 p.m., David Schmidt via cctech wrote:
> On 2/10/21 1:00 PM, John Many Jars wro
I'm about to try the very same thing.
I have a MicroVAX II with a sigma MSCP ESDI controller. It can be set
for soft-secoring or various numbers of hard sectors. That is what I
see is the big issue with these drives.
A friend gave me two drives that had been written on a PC under *nix.
I do ha
Doesn't ATA transfer the data in parallel? ESDI uses the same two
connectors as MFM (20/36 IIRC) , and transfers the data serially. The
difference between MFM and ESDI is that MFM transfers the raw analogue
data over the cable but ESDI transfers digital serial data.
Nigel Johnson, MSc., MIEEE,
On 2021-02-11 12:41 p.m., Al Kossow via cctalk wrote:
> On 2/11/21 9:33 AM, Nigel Johnson via cctalk wrote:
>> I'm about to try the very same thing.
>>
>> I have a MicroVAX II with a sigma MSCP ESDI controller. It can be set
>> for soft-secoring or various number
/11/21 9:40 AM, Nigel Johnson via cctalk wrote:
>> Doesn't ATA transfer the data in parallel? ESDI uses the same two
>> connectors as MFM (20/36 IIRC) , and transfers the data serially. The
>> difference between MFM and ESDI is that MFM transfers the raw analogue
>> d
The TK25 IIRC
Nigel
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.john...@ieee.org
On 2021-02-12 11:19 a.m., Al Kossow via cctalk wrote:
>
> This is a mystery.
> What DEC system used a CDC Sentinel DC300 cartri
Has anybody got a DCV54 that they are using?
I am trying to get one working with David Gasswein's mfm board and
having no luck.
The controller is working fine with a standard floppy as an RX33, even
boots the MicroVAX from it. But on-board diagnostics cannot format or
even recognise the mfm boar
On 2021-02-24 11:06 a.m., Jon Elson via cctalk wrote:
> On 02/24/2021 08:06 AM, Chris Zach via cctalk wrote:
>>
>> Sort of. MASSBUS was a very overpriced and to be honest weird system
>> that DEC developed in an attempt to be like IBM and charge very high
>> markups for generic peripherals. While
Speaking of badges, I have a BA23 that doesn't have one. It was an 11/73
but that badge is gone, and I am trying to repair an 11/93 to go in there.
Does anybody have a spare 11/73 badge for the BA23 that could be used as
a model for a printed version that says 11/93? I don't believe there
ever wa
11:57 a.m., Doc Shipley via cctalk wrote:
> On 3/5/21 10:51, Nigel Johnson via cctalk wrote:
>> Speaking of badges, I have a BA23 that doesn't have one. It was an 11/73
>> but that badge is gone, and I am trying to repair an 11/93 to go in
>> there.
>>
>> Does an
...@ieee.org
On 2021-03-05 12:12 p.m., emanuel stiebler via cctalk wrote:
> On 2021-03-05 11:57, Doc Shipley via cctalk wrote:
>> On 3/5/21 10:51, Nigel Johnson via cctalk wrote:
>>> Speaking of badges, I have a BA23 that doesn't have one. It was an 11/73
>>> but that b
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