From Newsgroup: comp.os.cpm

DX-Forth is a Forth language compiler and development system
for MS-DOS and CP/M-80 operating systems. It is intended to
be a complete, easy to use, programming tool for the creation
of turnkey applications.

What's new:

v4.57 2024-12-08

+ added - removed * fixed ! changed = updated

+ (NUMBER) \CHAR CSKIP "
! INTEGER moved to TOOLS
! DOSLIB: strings, parsing, files

Downloads:

DXCPM457.ZIP (CP/M-80)
DXDOS457.ZIP (MS-DOS)

https://drive.google.com/drive/folders/1kh2WcPUc3hQpLcz7TQ-YQiowrozvxfGw
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From Newsgroup: comp.os.cpm

On 08-12-2024 04:01, dxf wrote:

DX-Forth is a Forth language compiler and development system
for MS-DOS and CP/M-80 operating systems. It is intended to
be a complete, easy to use, programming tool for the creation
of turnkey applications.

What's new:

v4.57 2024-12-08

+ added - removed * fixed ! changed = updated

+ (NUMBER) \CHAR CSKIP "
! INTEGER moved to TOOLS
! DOSLIB: strings, parsing, files

Downloads:

DXCPM457.ZIP (CP/M-80)
DXDOS457.ZIP (MS-DOS)

https://drive.google.com/drive/folders/1kh2WcPUc3hQpLcz7TQ-YQiowrozvxfGw

Congratulations! It's nice to see such compilers remain maintained and relevant!

Hans Bezemer
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From Newsgroup: comp.os.cpm

On 12/9/24 02:28, Hans Bezemer wrote:

On 08-12-2024 04:01, dxf wrote:

DX-Forth is a Forth language compiler and development system
for MS-DOS and CP/M-80 operating systems.-a It is intended to
be a complete, easy to use, programming tool for the creation
of turnkey applications.

What's new:

v4.57-a 2024-12-08

+ added-a - removed-a * fixed-a ! changed-a = updated

+-a (NUMBER) \CHAR CSKIP "
!-a INTEGER moved to TOOLS
!-a DOSLIB: strings, parsing, files

Downloads:

DXCPM457.ZIP (CP/M-80)
DXDOS457.ZIP (MS-DOS)

https://drive.google.com/drive/folders/1kh2WcPUc3hQpLcz7TQ-YQiowrozvxfGw

Congratulations! It's nice to see such compilers remain maintained and relevant!

Hans Bezemer

Very impressive. Nice to see CP/M supported.
Will it run on later versions of DOS past 2.x ?

-John

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From Newsgroup: comp.os.cpm

On 24/12/2024 10:41 am, John wrote:

...
Very impressive.-a Nice to see CP/M supported.
Will it run on later versions of DOS past 2.x ?

Yes - I should have been more clear. For a long time it was developed
under Win98 in a DOS window. 2.x support is probably the tentative one.


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From Newsgroup: comp.os.cpm

On 12/23/24 20:28, dxf wrote:

On 24/12/2024 10:41 am, John wrote:

...
Very impressive.-a Nice to see CP/M supported.
Will it run on later versions of DOS past 2.x ?

Yes - I should have been more clear. For a long time it was developed
under Win98 in a DOS window. 2.x support is probably the tentative one.

Also, I seem to have some trouble with the floating point.
Keep getting f-stack error messages, which the manual says are
under/over flows.


1 9 / <return> returns a zero, not the expected 0.11111

So, I'm guessing the F* (etc.) are the floating point arithmetic.
3 5 F* <return> however gives an "f-stack" error. 15 is an overflow?

And not sure how to enter decimals, I though maybe entering a ".0" after
my numbers would flag them as reals not integers, but...
3.14 2.96 <return> does not put both numbers on the stack

Maybe I'm not doing it right, I'm just doing what's intuitive to me.
And yes, I'm running FORTH-F. This is the DOS version.
Please help a wayward user....

-J
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From Newsgroup: comp.os.cpm

On 25/12/2024 3:06 pm, John wrote:

...
Also, I seem to have some trouble with the floating point.
Keep getting f-stack error messages, which the manual says are under/over flows.

1 9 / <return>-a returns a zero, not the expected 0.11111

So, I'm guessing the F* (etc.) are the floating point arithmetic.
3 5 F* <return>-a however gives an "f-stack" error. 15 is an overflow?

Reals are entered with an 'e' thus:

3e 5e f* f. 15. ok

The forth interpreter must be in DECIMAL for this to work.

And not sure how to enter decimals, I though maybe entering a ".0" after my numbers would flag them as reals not integers, but...
3.14-a 2.96-a <return> does not put both numbers on the stack

Those would be illegal numbers - neither reals nor integers. Integers
take the form:

Singles: 1 -2 3
Doubles: 1. -2. 3.

Doubles have their own operators D+ D* D. etc. There are also mixed operators e.g. UM* that takes two unsigned singles and leaves an unsigned double.

Maybe I'm not doing it right, I'm just doing what's intuitive to me.
And yes, I'm running FORTH-F.-a This is the DOS version.
Please help a wayward user....

Since Forth is rather different it has had to develop its own conventions.
A bit of practice and it will become second nature!

HTH

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From Newsgroup: comp.os.cpm

dxf <dxforth@gmail.com> writes:

On 25/12/2024 3:06 pm, John wrote:

And not sure how to enter decimals, I though maybe entering a ".0" after my numbers would flag them as reals not integers, but...
3.14-a 2.96-a <return> does not put both numbers on the stack

Those would be illegal numbers - neither reals nor integers.

At least in standard Forth. In traditional Forth 3.14 and 2.96 are
double-cell integers (with the value #314 and #296). And backwards compatibility demands that they should not be recognized as FP values.

In Gforth snapshots from the last few years (not available for CP/M,
sorry) you get the following when you type in "3.14":

*terminal*:2:1: warning: '3.14' is a double-cell integer; type `help' for more info ok 2

HELP then says:

To input floating-point numbers, use an exponent, e.g. "1e".
To input double-cell integers without warnings, use a base-prefix and put
the '.' only in the last position, e.g. "#1.".

But you can also do

' rec-float ' forth-recognize defer@ >stack

and then you can do things like

3.14 2.96 f* cr f.

which produces the following output:

*terminal*:18:1: warning: float without 'e' is non-standard
*terminal*:18:6: warning: float without 'e' is non-standard
9.2944 ok

You can also disable the warnings with "warnings off".

Followups set to comp.lang.forth.

- anton
--
M. Anton Ertl http://www.complang.tuwien.ac.at/anton/home.html
comp.lang.forth FAQs: http://www.complang.tuwien.ac.at/forth/faq/toc.html
New standard: https://forth-standard.org/
EuroForth 2024: https://euro.theforth.net
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From Newsgroup: comp.os.cpm

On 25/12/2024 3:06 pm, John wrote:

...
Maybe I'm not doing it right, I'm just doing what's intuitive to me.
And yes, I'm running FORTH-F.-a This is the DOS version.
Please help a wayward user....

Thanks for this. While there is a 'walk through' for Forth beginners
included in DXFORTH.TXT I omitted to mention how to enter doubles and
reals. This will be fixed in the next update (or I may just issue an
interim release as updates tend to be infrequent nowadays).

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