Re: standalone code for bootstrapping

---In [email protected], <kerravon86@...> wrote :

> I place the program on a different track, ie
> head 1 instead of head 0, rather than what
> is more normal which is to store the
> stand-alone program at the end of cylinder
> 0 head 0.

Actually I think the logic in sapstart should
be to start reading 32767 bytes from
head 0 record 4, and not complain if it is
not found at all, then continue reading
head 0 until block not found, and then
switch to head 1 record 1.

This way if you have a small sapstart-based
program it can be stored in the normal
position (head 0), but if you have a large
program, it can be stored starting in
head 1.

To Dave McGuire - you don't want the
overhead of PDOS for your bare metal
3270 program, but would sapstart be
useful?

https://sourceforge.net/p/pdos/gitcode/ci/master/tree/pdpclib/sapstart.asm

Although it was written as the startup
code for C programs it should also
function for assembler programs. You
could embed your 3270 code inside
sapstart or link with it where it currently
does a call to @@START.

BFN. Paul.