Mail Archives: opendos/2001/03/07/19:31:02
Thanks for the reply.
To answer your last question first, I know the 'm' is representing
either the Roman letter 'u' or the Greek letter "mu", because the
text is clearly referring to the NEC switch-mode chip 'uPC494C'.
Although the first letter of this chip number is usually shown as
'u', I think the "proper" letter is the Greek letter "mu", similar to
chip numbers such as 'uA741' (ex-Fairchild) ...
As far as the algorithm or program used - I have no idea. I'm looking
for clues about this ... After I know what this text format is, my next
task will be to find a suitable program, with which to either display
or convert this text.
I'm not sure how much this will help, but here are the first few lines
of the file in question (not sure if it will come out right) :
пpовеpк микpосхемы TL494 и ее логов
(OE1114..."4, mPC494C, IR3M02)
' сост в этой ^' входит: з д ющий геер тор пилообр зого
пряжеия А1, ч стот геер тор з д ется вешим резистором R1
кодес тором C1 и может быть приближео определе по формуле
f=1/(C1*R1). R1 включ ется между вывод ми 6 и 7, C1 между
вывод ми 5 и 7. Амплитуд пилы е з висит от оми лов R1 и C1 и
приблизительо р в 4'; усилитель цепи обр той связи DA2;
широто-импульсый модулятор, выполеый комп р торе DA4;
Joe.
> -----Original Message-----
> From: Arkady V.Belousov [SMTP:ark AT belous DOT munic DOT msk DOT su]
> Sent: Tuesday, 6 March 2001 21:28
> To: opendos AT delorie DOT com
> Subject: Re: Text file format .ASC ?
>
> X-Comment-To: da Silva, Joe
>
> Hi!
>
> 6-???-2001 19:38 Joe DOT daSilva AT emailmetering DOT com (da Silva, Joe) wrote to
> "'opendos AT delorie DOT com'" <opendos AT delorie DOT com>:
>
> dJ> Does anyone know how to decypher a text file, with filename
> dJ> extension ".ASC", which seems to :
>
> No. This _absolutely_ depends from encoding scheme, which was used to
> generate this file. You should (1) which algorithm was used to encode, (2)
> which program do this and/or you should (3) citate small typical part of
> those file to let us decide how this file generated if you don't know this
> themselves. In any case, (3) or even (2) not neccessarilly allows us to
> decode real contents of this file.
>
> dJ> 2. Use some other encoding for characters above *about*
> dJ> 96 ($60). For instance, character 109 ($6D) is either the
> dJ> the Roman letter 'u' or the Greek letter "mu", whereas in
> dJ> ASCII, this should be the Roman letter 'm' ...
> dJ> The above clues were obtained from the following fragment :
> dJ> 2C 20 6D 50 43 34 39 34 43 2C 20 , mPC494C,
>
> What here give you reason to think about 'm' as "mu" replacement?
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