[Coladam] More fun adventures in CP/M

Joe Blenkle jblenkle at sacnews.net
Fri Feb 19 23:38:35 CET 2010


Ah, duh! Re-reading my own message I should have realized...IYG has a "Y" in 
the middle...

----- Original Message ----- 
From: "Joe Blenkle" <jblenkle at sacnews.net>
To: "Ronald Mitchell" <bytehacker at tallcedarskennels.com>; "Daniel Bienvenu" 
<newcoleco at yahoo.fr>
Cc: <coladam at adamcon.org>
Sent: Friday, February 19, 2010 2:25 PM
Subject: Re: [Coladam] More fun adventures in CP/M


> Ah, tricky...eh...so I use UNCRLZH on a .IYG file to get an IMG file which 
> I
> then turn into a disk image only to find there are LBR files on the disk
> image so I use DELBR to extract the files only to find they are CYM, DYC 
> and
> BYS which I then have to turn around and use UNCRLZH on again...
>
> Makes perfect sense to me...
>
> Joe B.
>
> ----- Original Message ----- 
> From: "Ronald Mitchell" <bytehacker at tallcedarskennels.com>
> To: "Daniel Bienvenu" <newcoleco at yahoo.fr>; "Joe Blenkle"
> <jblenkle at sacnews.net>
> Cc: <coladam at adamcon.org>
> Sent: Friday, February 19, 2010 1:58 PM
> Subject: Re: [Coladam] More fun adventures in CP/M
>
>
>>A long time ago, in a galaxy far far away........
>>
>> .CYM  meant  that the file was  compressed with the program CRLZH.COM
>>
>> you can uncompress it with UNCRLZH.COM
>>
>> Joe was quite right. There were all sorts of compression algorithms at
>> the time, squeezed,  arked,  arced, self-extracting arc, and yada  yada.
>> The authors of each claimed various advantages, such as more  efficient
>> compression, or smaller size, and the like.
>>
>> If was all for use back in the time when sending files online with 
>> dialup
>> equipment at 300 baud  was expensive, so the fewer kilobytes  you had to
>> send, the cheaper it was. Everything got compressed prior  to sending,
>> which meant that it had to be uncompressed at the other  end. When it 
>> came
>> to compression/decompression software there were  quite a few "flavours 
>> of
>> the month". These days we've abandoned all of  that in favour of ZIPS or
>> GUNZIPS or BZ's,TARs,TARBALLS and  BZEDDEDTARBALLS - or is it 
>> TAR.BZ  ---
>> something like that.
>>
>> Some things never change.
>>
>> Ron
>>
>>
>>
>> On 19-Feb-10, at 1:17 PM, Daniel Bienvenu wrote:
>>
>>> I'm sorry Joe... that's all the page said realy, no mention of DYC  or
>>> things like that. Y is close to Z so maybe it's related, I don't  know.
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Coladam mailing list
>>> Coladam at adamcon.org
>>> http://adamcon.org/cgi-bin/mailman/listinfo/coladam
>>>
>>
>
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