[fpc-pascal] FPC in DOS environment

[Daniel Franzini]

thanks for the help

On 1/11/07, Daniël Mantione <daniel.mantione at freepascal.org> wrote:
>
>
>
>
> Well, help is certainly very welcome, but note that more is needed than
> one or two bug fixes. To make it a first platform again someone is needed
> who really uses Dos, so he quickly notes when something is wrong and can
> make some new developments available on the Dos platform.


i use DOS regularly (right this moment, my 'lab' got messed up by a foreign
handand i lost a AT power supply so no old PC running; this will get fixed
today)

i will do my best to make it up to date and to help Pierre

Ok, so it is real DPMI. Since it can run OS/2 I think VPC should be of
> sufficient quality to run a Dos extender but note that many virtual
> machines don't a PC emulate good enough and can be expected to cause some
> trouble here. I'm not saying this is the case here, but you shouldn't
> put limitless trust in your VM either.


well, a  think that the problem is with freedos native dpmi (called
hdpmi)...i will try to use cwsdpmi inseated to run fpc

i forgot to mention that i noticed that the ide has this strange behavior:
it loads, shows up and quickly disappears...no error msg, no crash

for the sake of developing the DOS plataform, which version should i use:
the 2.0.x branch or the new 2.1.x ??



> Yes.


thanks

I suggest to use the internal assembler.


i will do so

You should check the go32 extender documentation wether it supports
> interrupt 26. If yes, the port will be easy, you can just update the code
> using 32 bit registers (i.e. ebp instead of bp).
>
> If not, it is harder: you should allocate real mode memory, copy data to
> real mode and do a real mode interrupt. The go32 contains the procedures
> to do this.


thanks for this info...gotta study the go32 unit and the go32v2 extender
itself

Daniël
>
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-- 
Daniel

"Let us change our traditional attitude to the construction of programs.
Instead of imagining that our main task is to instruct a computer what to
do, let us concentrate rather on explaining to human beings what we want a
computer to do." (Donald Knuth)

"Yes, technogeeks can be funny, even if only to each other." (
http://www.boogieonline.com/revolution/science/humor/)"

"Man is driven to create; I know I really love to create things. And while
I'm not good at painting, drawing, or music, I can write software."
(Yukihiro Matsumoto, a.k.a. ``Matz'')
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