Releasing OS/2

Allison ajp166 at bellatlantic.net
Fri Oct 14 20:28:48 CDT 2005


>
>Subject: Re: Releasing OS/2
>   From: "Chuck Guzis" <cclist at sydex.com>
>   Date: Fri, 14 Oct 2005 15:37:43 -0700
>     To: cctalk at classiccmp.org
>
>On 10/14/2005 at 5:11 PM Allison wrote:
>
>>While 1+ing the question we can add 8bit multitasking for Z80 other than 
>>MP/M to look at.
>
>Molecular was running MT software simply by using a CPU card for each user.

One approach.  I ran a multiprocessor Z80 system back in '81-82 with one 
difference idle processors (or processors idling) could take on tasks 
from the system exec.

>
>That Durango system (that I'm STILL trying to give away) was designed from
>the ground up with MT in mind.  Since the 8085 can't do dynamic  address
>relocation very easily, we simply put the MT facilities in the compiled (to
>a sort of P-code)  BASIC.  File access control and data sharing was a part
>of it.  Except for the very lowest level system utilities, all programs
>were written in it.  A 5 MHz 8085 could support 5 users quite comfortably.
>Added memory was 1K pages, mapped through 64x9 bipolar RAM.

I've done a memory paged 8085 system, interesting.

I have to ask, how does all of this fit with the question?:  

  How does OS/2 warp V3 compare to other PC OSs like CDR Concurrnet386 or
  win3.1?


Allison



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