Re: Real Time Clock on Cassette Write/Sense lines

From: Gerrit Heitsch <gerrit_at_laosinh.s.bawue.de>
Date: Sat, 11 Feb 2012 19:03:00 +0100
Message-ID: <4F36AD54.8050203@laosinh.s.bawue.de>
On 02/11/2012 06:57 PM, Jim Brain wrote:
> On 2/11/2012 11:20 AM, Gerrit Heitsch wrote:
>> On 02/11/2012 06:02 PM, Jim Brain wrote:
>>>
>> If you want to use the motor line for I2C, but still be able to use
>> the tape drive, why not set up a low pass filter on it so the motor
>> line that the tape drive sees only gets activated if there is a true
>> static signal on the line and not the I2C data or clock.
>>
>> Gerrit
>>
>>
>> Message was sent through the cbm-hackers mailing list
> I'd prefer not to use the MOTOR line, due to the voltages, the possible
> skew, and the upper limit on switching speed due to the voltage division
> used (resistors).

Ok, but with a 264 system you won't have much choice unless you want to 
use a line that is also used by the IEC bus.

  Gerrit


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Received on 2012-02-11 19:00:03

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