6 Sep
2022
6 Sep
'22
12:16 a.m.
I agree, but in addition to getting the main system disk back up, I have
an ST506 emulator from David Gesswein that I would like to get working
after I built it. My Plessey DCV54 does not even offer a drive select
signal!
cheers,
Nigel
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591
On 2022-09-05 20:12, Chris Zach via cctalk wrote:
> I have a spare RQDX3, but I really recommend finding an ESDI
> controller. It is literally a slug compared to my MTI ESDI controller.
>
> C
>
> On 9/5/2022 5:34 PM, Nigel Johnson Ham via cctalk wrote:
>> So now, like me, you are stuck with a bunch of ESDI drives and no
>> controller!
>>
>> I do have one DQ696, on my MVII in a BA123 box, but the other
>> controller was a Sigma that developed in internal faulure and which I
>> used for RT11 on my 11/73 BA23 box.
>>
>> Now I have to share the one controller between the two boxes. RT11
>> one day and NetBSD another!
>>
>> Like you, I sold all sorts of stuff for a song, including a
>> millivolt-on-HVAC common mode DT2765 a/d card that was $3000 when
>> new! I also had 3 KA630s and accidentally sold two, so now I do not
>> have a spare for the microvax either!
>>
>> If anybody out there has a DQ696 or an RQDX3 available, I'd like to
>> hear from you!
>>
>> cheers,
>>
>> Nigel
>>
>>
>>
>> Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
>> Amateur Radio, the origin of the open-source concept!
>> Skype: TILBURY2591
>>
>>
>> On 2022-09-05 17:19, Jon Elson via cctalk wrote:
>>> On 9/5/22 13:46, Nigel Johnson Ham via cctalk wrote:
>>>> If I tell you that they are not, will you think I am just trying to
>>>> get the QD21 from you? I need one to replace the Sigma ESDI
>>>> controller that failed, and no its format is not the same either.
>>>>
>>>> They also had a choice of hard vs soft sectoring. I believe Emulex
>>>> and Dilog handled the RCT differently on the disk too.
>>>>
>>>> Let me know if you are willing to part with the QD21.
>>>
>>> Sorry, going through emails from 2012, it seems I sold the QD21 for
>>> a song back then.
>>>
>>> Wow, really crazy when you don't know what you dreamed and what you
>>> really did! But, I sure can't put my hands on it now!
>>>
>>> Jon
>>>