8 inch floppies

Dave Mabry dmabry at mich.com
Fri Dec 13 16:17:58 CST 2019

Fred Cisin via cctalk wrote on 12/13/2019 4:11 PM:
> On Fri, 13 Dec 2019, David Barto via cctalk wrote:
>> Those would have fit a Terak system for UCSD Pascal. I’ve still got a 
>> few stuffed in a closet.
>>     David
>>> On Dec 13, 2019, at 12:09 PM, Al Kossow via cctalk 
>>> <cctalk at classiccmp.org> wrote:
>>> anyone know what system these floppies are for?
>>> https://www.ebay.com/itm/Lot-of-33-8-034-Floppy-Disks-/184071352445
> Some are labeled "MRX", "CP/M", "Isis", "Chip-?","PROM?", I do not see 
> any that are labeled "Terak", "UCSD", or "Pascal"
> At least some of them say, "single-sided, soft-sectored double 
> density", some say "double sided", so they would physically work in a 
> lot of stuff if reformatted.  But imaging is important, as they MIGHT 
> have something significant on them.   "Bubble memory files"?
> They sold for $59 to somebody with 8000 feedbacks.
There are three that appear to be Intel MDS diskettes.  The ones marked 
ISIS V4.3 is, as I remember, the last version of ISIS-II that Intel 
released.  ASM51 and RL51 appear to be assembler and relocater for the 
8051 series of microcontroller.  And ICE51 was the in-circuit emulator 
software for the 8051 series as well.  None of the other labels mean 
anything to me, but those three are likely for the Intel Development 
System.  Those systems could have single-sided, single-density FM 
drives, and/or single-sided double-density M2FM.

The Intel MDS could, of course, run CP/M-80.  So many of those other 
diskettes could have CP/M software/files and still be used on the Intel MDS.

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