[GoLUG] I just made my first Flex lexical analyzer Hello World

[Omer Zak]

All this discussion and the article remind me of the toy compiler
(technically, a cross-compiler) that I wrote at age 15.

The compiler was written in IBM 360 assembly language and ran on the
UCLA IBM 360/91 computer, to which I had access at the time.

The source was FFRF (Free-Form Restricted FORTRAN), a subset of
FORTRAN.

The target was CARDIAC cardboard computer
(https://en.wikipedia.org/wiki/CARDboard_Illustrative_Aid_to_Computation).

I learned compiler theory from Gries' book Compiler Construction for
Digital Computers
(https://www.amazon.com/Compiler-Construction-Digital-Computers-David/dp/047132776X).

The project took me few months of afternoons, using tools available at
1972.
Using today's tools, I might be able to complete it in less than two
weeks.

--- Omer Zak



On Sun, 2023-11-12 at 08:35 +0000, David Billsbrough wrote:
> 
> It just might take you five years or longer.   Try going here next
> Steve and you'll other folks:
> 
>    https://ruslanspivak.com/lsbasi-part1/
> 
> I will also work on it myself ... just for fun!
> 
> regards,
> 
> David
> --David Billsbrough -- Amateur Radio Callsign: KC4ZVW

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