DOS ain't dead

Hello all

I have a problem with Screen or Screenres function on freebasic 1.01

I launch my program with standard screen of FreeDos, the ISR timer work perfectly, but if SCREEN or SCREENRES is called, the ISR runtime is blocked .....

for resolve my problem, I must re-create another ISR, but this is not that I want ...

A solution ? Can you help me ?
Thank

PS: Exuse me for my English level, I'm French a student

---
Sébastien FAVIER

ps: Excuse me for my English level, I'm a French student

> I have a problem with Screen or Screenres function on freebasic 1.01
>
> I launch my program with standard screen of FreeDos, the ISR timer work
> perfectly, but if SCREEN or SCREENRES is called, the ISR runtime is blocked

Sounds like FB doesn't properly chain the ISR by jumping to the already registered routine at the end of the ISR. File a bug?

> Sounds like FB doesn't properly chain the ISR by jumping to the already
> registered routine at the end of the ISR. File a bug?

Yes but anyway - timer ISR setting before videoengine setting seems to be a little bit risky for me. I would prefer to setup whole graphics first and timer then.

---
DOS-u-akbar!

> > Sounds like FB doesn't properly chain the ISR by jumping to the already
> > registered routine at the end of the ISR. File a bug?
>
> Yes but anyway - timer ISR setting before videoengine setting seems to be a
> little bit risky for me. I would prefer to setup whole graphics first and
> timer then.

Thank you for your replys

I can't setup graphics before timer, because, the user of my program (in execution) can change screen resolution manually :/

This is my FreeBaic code :
http://www.freebasic.net/forum/viewtopic.php?f=4&t=23297

I use fb_isr_set, fb_isr_reset, fb_isr_get OF FREEBASIC
I think that Screen function is "relied" with this.
If I code my ISR timer with Djgpp in C, and compile in a .A library, and compile with my program who use Screen function, you think that this can work ?
I can test this tomorrow

Best regards

---
Sébastien FAVIER

ps: Excuse me for my English level, I'm a French student

> > I have a problem with Screen or Screenres function on freebasic 1.01
> >
> > I launch my program with standard screen of FreeDos, the ISR timer work
> > perfectly, but if SCREEN or SCREENRES is called, the ISR runtime is
> blocked
>
> Sounds like FB doesn't properly chain the ISR by jumping to the already
> registered routine at the end of the ISR. File a bug?


Hi,

I was written my ISR library in C and, compile this with GCC (.a), I have include this in my Freebasic program (C import) and this Work when I change my screen resolution

Thank's you all

---
Sébastien FAVIER

ps: Excuse me for my English level, I'm a French student