[Coladam] More fun adventures in CP/M

Ronald Mitchell bytehacker at tallcedarskennels.com
Sat Feb 20 00:58:44 CET 2010


<evil grin>   Ya got that right pilgrim! And if you get through to the  
other side without tearing your hair out, then you deserve a reward of  
some sort.  An official ADAM "ATTABOY!"  or something like that.

Only one that means nothing to me is the .BYS file.  Have no idea what  
that might be.

Ron

On 19-Feb-10, at 2:25 PM, Joe Blenkle wrote:

> 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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