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- Path: sparky!uunet!cs.utexas.edu!usc!sol.ctr.columbia.edu!caen!mtu.edu!abcd.Houghton.MI.US!Jim_Johnson
- From: Jim_Johnson@abcd.Houghton.MI.US (Jim Johnson)
- Newsgroups: comp.sys.atari.8bit
- Subject: Re: A dumb question!
- Distribution: world
- Message-ID: <Jim_Johnson.05y8@abcd.Houghton.MI.US>
- Date: 28 Jul 92 19:53:22 EST
- Organization: Amiga BitSwap Central Dispatch
- Lines: 46
-
- In a message dated Tue 28 Jul 92 13:24, Bruck@brachot.jct.ac.il (itay Chami
- wrote:
-
- BC> Alot of times I ask myself the question: How was the Rev A OS
- BC> written? I mean,
- BC> the Atari assembler wasn't out yet, so did they use calculators? And
- BC> how was
- BC> Rev A BASIC created? And how was the Atari Assemler/Editor written?
- BC> Were all the Rev A bugs (both in the OS and in BASIC) there just
- BC> because they
- BC> were written in unreliable ways? (not using an assembler?)
- BC> -Itay
- BC> --
- BC> ****************
- BC> * Itay Chamiel *
- BC> bruck@brachot.jct.ac.il OR bruck@147.161.1.1
- BC> * The Parasite *
- BC> ****************
- BC> Calling to YOU from Jerusalem, Israel! (a cozy place)
-
- By now someone will have answered this, but in case they haven't...
- All the complex tools in the world have been built the same way, that is by
- preceeding generations of simpler tools. The Atari OS, et al, were built
- by a 6502 cross assembler. That is to say, another computer (in this case
- a mainframe (archaic by now)) ran an assember that generated machine
- language code for a different processor (in this case a 6502). Mind you,
- this is more complicated than writing ML code programs for the Atari,
- because everyone who writes for the Atari uses routines already written in
- the OS.
-
- If you think about it, this is the way all the game cartridges for the
- Atari Lynx, Nintendo, Sega, etc. are built. After all, none of them come
- with program development capabilities.
-
- I have heard of many cross assemblers for MS-DOS machines to program
- nearly every commonly used processor ever produced (including mainframes).
-
-
- Jim Johnson - Laurium, Michigan, USA (near Lake Superior where 6-8 meters
- of snow falls every winter)...
-
-
- -- Via DLG Pro v0.995
-
- Jim Johnson-
- *** Remember, they're only tools - Not a way of life! ***
-