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non-DOS (yet): an interesting project for x86-64 (Miscellaneous)

posted by tkchia Homepage, 23.01.2021, 18:31

Hello glennmcc,

> ie: compile Freedos's kernel.sys, command.com
> and all other associated files as TRUE 64bit
> just as the Linux kernel is now available as true 64bit.

That whole idea itself will not make very much sense.

(...and by "not make very much sense", I mean that it will be like trying to genetically engineer a non-equine horse.)

MS-DOS's system call interface is only described in terms of 16-bit assembly language constructs. Other than that, there is no stable interface between the OS kernel and application programs.

MS-DOS does not have a syscall() function (or a syscall(2) man page) which one can "simply" port to a different (sub)architecture.

Thank you!

---
https://gitlab.com/tkchia · https://codeberg.org/tkchia · 😴 "MOV AX,0D500H+CMOS_REG_D+NMI"

 

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