forth-ev/volksforth

volksFORTH is a 16bit Forth System maintained by the German Forth Gesellschaft e.V.

volksforth's Issues

topic addition for better community reach

Hey,
for better reach of the community, I would like to suggest to add the following topic to the repository: motorola-68000

How to do this

Implement SLITERAL

see https://forth-standard.org/standard/string/SLITERAL

8086 native port

There was once a VolksForth port that run native on 8088/8086 machines (witthout MSDOS).

Trying to recreate that port

Requires a boot-loader.

Possible options:

syslinux COMBOOT: https://wiki.syslinux.org/wiki/index.php?title=Comboot_API
FATBOOT: https://files.osdev.org/mirrors/geezer/osd/boot/
BOOTPROG: https://github.com/alexfru/BootProg
LDOSBOOT: https://hg.ulukai.org/ecm/ldosboot/file/90c4983300a0/boot.asm
Generic Bootloader Discussion: https://wiki.osdev.org/Bootloader

Implement N>R NR> ?

Reminder:

Implement
NR>
N>R
?

for Atari ST, 6502 Targets

Update Handbook

Word "0>" fails for input -32768

Found by @pzembrod , fix in C64 soruces, needs to be ported to other 6502 targets

Implement FOR NEXT

Alternative Loop Structure FOR ... NEXT

http://www.bellgroup.cz/private/?p=1934
https://github.com/TG9541/stm8ef/wiki/eForth-FOR-..-NEXT
https://old.reddit.com/r/Forth/comments/6b9lsz/alternatives_to_loop/
http://brokestream.com/daf.txt
https://stackoverflow.com/questions/6949434/how-to-implement-loop-in-a-forth-like-language-interpreter-written-in-c
https://web.archive.org/web/20140406021653/http://blogs.msdn.com/b/ashleyf/archive/2011/02/06/loopty-do-i-loop.aspx

shutdown 8086 bare metal via APM

https://stackoverflow.com/questions/678458/shutdown-the-computer-using-assembly

https://github.com/************/x86-bare-metal-examples/blob/268977654fb69099f63eaf2f970595bc1b45ab75/shutdown_apm.S

Atari ST/m68k: fix 68010->68060 compatibility

VolksForth crashes on m68k CPUs other than the 68000. We need to find out where it goes wrong.

Possibly we create a generic m68k target first, fix it there and then backport to the Atari ST target

Standard: implement S\"

see https://forth-standard.org/standard/core/Seq

Remove X16 double bank switching once X16 R39 is released

To make v4th-x16 compatible with both R38 and R39 (where the address of the ROM and RAM bank switching register changes), v4th-x16 v3.9.3 uses both register addresses for switching. Once R39 is stable, the double switching and the old address can and should be removed.

Port fix for 0>

0> is broken for the input of -32768. Philip has fixed it in the C64/C16 target, needs to be ported to all other 6502 targets