30 May
2000
30 May
'00
8 p.m.
Yes! So why's Sellam Ismail wanting to mix OS and data elements? He's
unhappy with the notion of putting only what you need on a diskette which
holds what you want to archive. What good does CP/M OS material do him if
he's using OS-8?
Dick
----- Original Message -----
From: allisonp <allisonp(a)world.std.com>
To: <classiccmp(a)classiccmp.org>
Sent: Tuesday, May 30, 2000 4:24 PM
Subject: Re: Defining Disk Image Dump Standard
boot
> The way
you separate the operating system from the executables is by
never,
> Never, NEVER, mixing them on the same medium,
particularly if it's
intended
> for dissemination. If the platforms are
disparate, you certainly don't
need
Ok, Mr. Wizard. Build a time machine, travel back in time, and urge all
the various computer manufacturers to never, NEVER mix their OS with the
rest of the program space on the disk. Fortunately, we are not trying to
revise the reality of our world, but are merely trying to deal with what
it has become, which is a much simpler procedure.
Done! the OS was never mixed with data on CPM disks until CPM3 and
CPM86.
the system booted off OS specific tracks and DATA was never stored there
and SYSTEM was never stored on DATA tracks. This applies to CP/M
{1.3, 1.4, 2.0, 2.2} explicitly and many others as well.
It makes little difference though. as then only reason is to make the easier as the booter then doesn't have to know the
file system to read
and launch the system which for cpm wasn't defined until boot completed
(as the system tables were part of the boot image).
Allison