8" floppy system needed to recover old game data - test-drb@ccmp.vtda.org

6 Oct 2005

...
  -----Original Message-----
 From: Allison

 I'm afraid I am not very familiar with CPM
systems. Could you please 
tell me why a conversion system is needed? Didn't they use   similar FDC 
 chips? I (perhaps naively) assumed it would be
some sort of a 
NEC765-derived one and we could get a simple track-by-track dump...  
 No. the 765 was available for sale in late 1980, CP/M systems were 
 3+ years old by then.  Even after that point the 765 was not the
 common part used for CP/M systems.  That a PCism. 
Okay, thanks for putting me straight. I think my confusion stems from my
experience of the Amstrad CPC computer that IIRC ran a CPM-derived
operating system, and used the 765.

...
  CP/M systems were largely a common coperating system a
that allowed
 for diverse hardware by way of a BIOS that the user or manufacturer
 could configure for that hardware.  There were many different disk
 systems, formats and in the games space deliberate attempts to make 
 the disks uncopyable by standard systems. 
What a nightmare!

...
  What you need is a CP/M familiar person here (actually
close 
 to the developer)
 in the usa and the data once extracted can be shipped via the 
 internet.
 Systems that convert formats are common enough for people 
 that actively 
 collect and restore. 
Well that is good news at least.

...
  > The only
"local" one I can think of from the top of my head, 
> is Sellam Ismail  
 IF its in San Fancisco hes' loads closer than me (3000 miles!). 
Seems he lives in California at least. Maybe I can convince him to make
a trip... ;)

Kieron

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