Re: Woody on 486 problem
- From: Mike McCarty <Mike.McCarty@xxxxxxxxxxxxx>
- Date: Thu, 15 Feb 2007 21:19:26 -0600
Ron Johnson wrote:
On 02/15/07 20:31, Mike McCarty wrote:
Remember when? I have a machine which I use on a regular
basis which runs MSDOS just fine. I use it on that same
486 with 16MB of RAM, of which MSDOS actually only uses
1MB. Who needs to remember when? I can remember now!
So, what GUI do you use?
Eh? With MSDOS? No gooey stuff in there!
If you want to remember when, I developed serious software
on a machine with 64 KB (yes, KILO bytes) of RAM+ROM total,
and thought I was in heaven to have so much memory. That
was a dual-disc machine: two 8 inch floppies of 512 KB each,
no hard drive.
Never used floppy disks, but I had a couple of CP/M KayPros with
380KB minifloppy drives. Damned fine machines those were.
You sure that isn't 360KB? The 5 1/4 floppies used in those days
were multiples of 90KB. SSSD was 90KB, SSDD was 180KB, and
DSDD was 360KB.
I created a multi-tasking RTOS running 16 apps at the same
time for a security monitoring system on that machine. The
processor was an Intel 8085.
How did you keep them from stepping on each other? You wrote the
apps in asm?
The whole shebang was assembler. I used MAC, and then RMAC when
things got too big to make a single assembly file reasonable.
I used CP/M for development, but when it was all running, of
course, it was just itself. The apps didn't step on each other,
because they didn't access memory which didn't belong to them.
Mike
--
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This message made from 100% recycled bits.
You have found the bank of Larn.
I can explain it for you, but I can't understand it for you.
I speak only for myself, and I am unanimous in that!
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