14 Mar
1999
14 Mar
'99
1:22 p.m.
<question: Is there any classic operating system known for which the
<complete source code is available ?
Well if you took the time to look and read... This is a non exhaustive list
of just a few.
CPM (8080, z80, 8086, 68000) This also includes all of the CP/M
clones such as P2dos, Suprbdos, Zrdos, Zsdos. These can be
found at various FTP sites on the net.
Uzi Unix (z80, z180, z280)
Can be fount as www.psyber.com/~TCJ and also several other
versions at FTP sites.
Minix (808x, 80x86 and others) the book Operating System Design and
Implmentation ISBN 0-13-6386677-6 By Tanenbaum and Woodhull.
Also the sources and executables are on the net. Pretty good
simplified unix like OS that is source available for teaching and
other student/research use.
Classic Unix is available with a lowcost license (versions include
V5, 6, 7 and a whole load more.
RTS-8, OS/8 (also OS278) for PDP-8 family are at various places on the net.
This OS is good for illustrating the close relationship of hardware
to software.
Allison
15 Mar
15 Mar
7:13 a.m.
Hi
Although, not specifically an operating system, Forth
can be used as an operating system. The normal disk
I/O can be easily expanded to include file systems.
Many tools for all kinds of things have been done
in Forth. Examples: editors, assemblers, compilers,
spread sheets, etc. If you have an old system with
no OS, Forth is always an option. Implementing Forth
on a machine is one of the few things I've always
felt was something that didn't take a company staff
to do. Once the basic core was implemented, one
could expand it to whatever one wanted. I've done
several over the years.
Dwight
7:52 a.m.
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8:57 a.m.
Cameron Kaiser <ckaiser(a)oa.ptloma.edu> wrote:
:: Although, not specifically an operating system,
Forth
::can be used as an operating system. The normal disk
Is there a good introduction to Forth anywhere? Web preferred.
Hi
A good place to start would be:
http://www.forth.org/fig.html
You can also ask questions of me and I'll help if
I understand what it is you need.
Dwight
10:46 a.m.
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10:58 a.m.
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11:14 a.m.
On Mon, 15 Mar 1999, Cameron Kaiser wrote:
::> Is there a good introduction to Forth anywhere?
Web preferred.
::
::http://www.forth.org/fig.html
Hmm, but that seems more a collection of links. I found a few papers
but they assumed some Forth knowledge already, which I don't have (I
don't even know the basic syntax). Any help appreciated :-)
I'm pretty sure the Forth Primer link on the literature page should
be a pretty good start, though it's been several years since I
referred to it. It's not on-line html, though.
--
Ward Griffiths
"the timid die just like the daring; and if you don't take the plunge then
you'll just take the fall" Michael Longcor
11:36 a.m.
::> :: Although, not specifically an operating
system, Forth
::> ::can be used as an operating system. The normal disk
::>
::> Is there a good introduction to Forth anywhere? Web preferred.
::
::http://www.forth.org/fig.html
Hmm, but that seems more a collection of links. I found a few papers
but they assumed some Forth knowledge already, which I don't have (I
don't even know the basic syntax). Any help appreciated :-)
Easy, Forth is kind of like APL. I forget the details and how variables
were handled, but its basically like this;
Fraggle; defined as some sequence of code.
Rraggle; defined as some other sequence.
Then in your program you could define
Graggle
Fraggle
Rraggle
End Graggle
......................
Anything you define gets executed when the name is referenced.
I used to forth around a bit on a AIM65. Rockwell was big into Forth at
least for a bit. Dandy control language IMNSHO.
1:05 p.m.
Mike Ford <mikeford(a)netwiz.net> wrote:
Then in your program you could define
Graggle
Fraggle
Rraggle
End Graggle
Hi
The unique thing about Forth is that you can more easily
build as you go. You can completely check your code
at each level of complexity. While at work I do a
little C and Pearl. When working on home projects
I pull out some Forth. As an example: Once I have the template, I
write an assembler in an evening.
As Mike has shown, it is a "Do it as you see it"
type language. This makes debug a snap and eliminates
most of those hidden precedence order bugs that
seem to sneak into code. It is a type-less language
so you have to be a big boy and know that you can't
multiply a character times 5 and get a meaningful result.
In general it is a vary structured and modular language
that allows the language to be expanded to be the
solution.
The bad part about Forth is dealing with all of the
stack manipulation words. Many consider them to
be unnecessary noise. Still, one can get Forth
running on most processors with a minimum of time
and effort. You start with a minimal interpreter/compiler
that runs from a terminal and build the rest on
the machine in question. No need for ROM-ICE or special
debuggers.
Dwight
12:02 p.m.
Cameron Kaiser <ckaiser(a)oa.ptloma.edu> wrote:
Several primers on:
http://www.forth.org/literature.html
or you could try:
http://burks.bton.ac.uk/burks/
under languages > Forth
Dwight
12:09 p.m.
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1:14 p.m.
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9257
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12 comments
6 participants
participants (6)
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allisonp＠world.std.com -
ard＠p850ug1.demon.co.uk -
ckaiser＠oa.ptloma.edu -
elvey＠hal.com -
gram＠cnct.com -
mikeford＠netwiz.net