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
More information about the cctalk
mailing list