[retroforth] Re: 2005 Wishlist!
- From: Stefan Schmiedl <s@xxxxxx>
- To: retroforth@xxxxxxxxxxxxx
- Date: Tue, 7 Dec 2004 08:11:54 +0100
Hi Chris!
Chris Walton (2004-12-06 19:48):
> Addition of Colorforth style conditionals. This means
> if ( - ) following code executed if CPU "zero flag" not set
> -if ( - ) following code executed if CPU "sign flag" set
> ? ( - ) examines top of stack, and sets CPU flags accordingly
A recent version introduced ?if to execute the following code
if the carry flag was set/clear, I don't remember which.
This is useful for find, as it makes checking whether a word
was found much easier, and changing the behavior of find to
return this information on the stack would have had major
consequences.
However, I'm not a friend of those "implicit" return values,
as they are a step away from the single parameter stack, where
*all* relevant data is available.
> Here are implementations for those:
> macro
> : if $74 1, here 0 1, ;
> : -if $79 1, here 0 1, ;
> : ? $c021 2, ;
> forth
Are you aware of <>if and <if?
Maybe we want to start a colorforth compatibility library?
>
> The ability to turnkey! This is very useful, and shouldn't be too hard
> (although platform-dependent). I think people should be easily allowed
> to take a vanilla retroforth, load all the sources of code library
> they want, then turnkey it into their own, already set up retroforth.
save definitions to file, include file in Makefile, make, rename bin/rf
to a suitable name.
>
> And here's my wishlist for the code library (some of which I might do myself
> :))
> - Block words
> - Block editor
> - File I/O
already there
> - Sockets
> - Multitasking/threading
> - LOGO-like graphics API (working on that :)
>
> And, my crazy wishlist:
> Maybe a colored layer on top of retroforth? I know charles has been
> considering that. I would love to see something like that done.
>
layer as in a preprocessor from colored source to plain source,
which would then be handled by rf?
kind regards,
s.
--
Stefan Schmiedl
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