Re: DRL updated!

Hi!

On Wed, 23 Oct 2002 15:40:27 +0400 (MSD), Arkady V.Belousov wrote:

> Yes. This is why extensively used in CTMOUSE itself. This (may)
> complicate making code DPMS-compatible (i.e. SFM code can't be runned from
> extended memory with help of DPMS), as stated by Matthias.

I admit I thought about DPMS.

> MT> However (as _you_ know for sure, but I feel it should be stressed):
> MT> 1. It is not re-entrant. Try to forget about it and find the source
> MT>    of all the strange errors that arise ;-)

> Not necessarily: make CLI before modifying INT instruction and all will
> work perfect. Should I proof this for you?

No, it's obvious. Of course, I can always say that preventing re-entrancy
and making the code fully re-entrant is somewhat different, but let's
don't start flame wars ;-)

> Yes. :) But BC RTL prepares INT instruction in array on stack. This
> solves both problems (reentrancy and ROMmability).

Good solution, indeed. It can even work in protected mode when code
and stack segments overlap.

Michal