G2F and DLI mode?

[Cybernoid]

Hi all!

 

I have a quick question about create ASM code with G2F in DLI+ mode.

 

Where can I put code for exiting the G2F code? I see sections for VBI and DLIs but where can I put normal code?

 

For example, I want to exit on a key hit:

 

lda $02fc

cmp #$ff

bne MYEXIT

Where can I put this in the code?

 

In GED mode, I put this right before the 'jmp LOOP'...

 

Thanks,

~C

[pps]

You´ll have to put your routines inbetween the VBI just behind this comment:

;*- this area is for yours routine, register X,Y must survive

But don´t forget this is called every 1/50 (PAL) or 1/60 (NTSC) second.

 

And you´ll have to reinit the nmi vector ($fffa).

[Cybernoid]

You´ll have to put your routines inbetween the VBI just behind this comment:

;*- this area is for yours routine, register X,Y must survive

 

Duh! You know if I would actually read the comments, I wouldn't have asked...

 

~C~

[Cybernoid]

Hmm, also I did not notice this before, but Heaven included source code for a thrust G2F screen:

 

http://www.atariage.com/forums/viewtopic.php?t=60778.

 

Thanks Heaven! This mostly worked to get back to DOS... I can now reach the DOS screen again, but it is locked up.

 

I am looking at it more...

 

Thanks!

[pps]

hmm, perhaps there is some data written within the memory used by DUP?

Try to relocate your datas.

[Cybernoid]

Hmm, I am not really using DUP, but rather a modified DOS 2.0 that allows loading AUTORUN.SYS, then AUTORUN1.SYS and AUTORUN2.SYS.

 

I have 2 G2F screens in one binary (AUTORUN.SYS). I can press start from the first one and it starts booting from AUTORUN1.SYS. I can then press Option to get to the second screen, but when I try to exit it hangs up the emulator.

 

The first screen is GED+. The second screen is DLI.

 

Things that make you go hmm....

 

Thanks,

~C