Accessing a TK50 or TK70 from RT

Rod Smallwood rodsmallwood52 at
Sun Jun 12 06:15:25 CDT 2016

On 12/06/2016 11:31, Adrian Graham wrote:
> On 12/06/2016 11:00, "Rod Smallwood" <rodsmallwood52 at> wrote:
>> OK we are moving forward.
>> Drive is TK70
>> Interface card is a TQK70 controller
>> The cart is a TK50 as that's all I have.
>> The write protect slide is to write protect off.
>> Cart loads normally and activity light goes to on.
>> Write protect light is off
>> I can now get the INIT to start and ask init Y/N.
>> INIT starts but write protect light comes on
>> System halts on an I/O error
>> .sh dev:mu
>> gives
>> Device                  Status      CSR                       Vector(s)
>> ---------                  --------            ---
>>                            ----------
>> MU                      122722    174500                260  254
>> Nearly there I think. I have loads of TK50 tapes to format.
> I'm pretty sure the TK70 can only read TK50 tapes and not write to them...
Thanks Graham

     Now that sounds highly likely. Does the TK70 controller support the 
TK50 drive perchance?
I have a TK 50 controller I can aways put that back in.


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