Re: Virtual serial drive

[D Finnigan <dog_cow@macgui.com>]

Michael J. Mahon wrote:
> David Schmidt <schmidtd@my-deja.com> wrote:
>> On 9/14/2012 1:35 PM, Michael J. Mahon wrote:
>>> David Schmidt <schmidtd@my-deja.com> wrote:
>>>> On 9/13/2012 6:19 PM, Sean Fahey wrote:
>>>>> On Thursday, September 13, 2012 1:34:20 PM UTC-5, Michael J. Mahon
>>>>> wrote:
>>>>> 
>>>>>> Be careful--the next logical step is having your IIc just be a
>>>>>> terminal for
>>>>>> an emulator running on the PC. And the serial link is too slow for
>>>>>> graphics!
>>>>>> 
>>>>>> I do like the idea of getting the time/date with each vdisk access...
>>>>> 
>>>>> Well... let's toy with this idea. Why not a small form factor machine,
>>>>> like a Raspberry Pi or similar mini 'PC' that could provide HD
>>>>> partitions (and/or disk serving), clock functions (at least date and
>>>>> time stamping) and serial to ethernet connectivity at the same time?
>>>>> That's the kind of love the //c (and IIc+) could benefit from.
>>>>> 
>>>>> Until the SPVHD is shipping again (it's supposed to be getting a clock
>>>>> driver too), a serial solution may be the only viable option for a
>>>>> long time.
>>>> 
>>>> Is there a protocol for transporting the date/time somewhere I can look
>>>> at?  Is there maybe a status request I can implement or something?
>>> 
>>> I'd suggest putting it into every vdisk protocol packet from the host in
>>> 4-byte ProDOS format. Then the client could just copy it to the ProDOS
>>> global page.
>> 
>> That's straightforward.  Does it have to be every disk access - or could
>> it happen at initialization time and be done?
> 
> Ideally every block read. Then the time-date stamps would all be accurate
> to the second, and any program wanting the info could just pick it up from
> the global page. 

I don't understand your rationale, "accurate to the second," because as I
understand it, the ProDOS date and time format doesn't store seconds.


-- 
]DF$
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