VBLANK in TurboForth

[VBLANK in TurboForth]

Hi,

 

is there a way to synchronize to VBLANK in TurboForth?  A counter would be useful, or maybe an efficient way to wait for the vertical blanking interrupt to occur.

 

Any hints would be greatly appreciated.  Thanks!
-Hans

[How to break into a program?]

Thank you very much, Lee!  This will make my weekend much nicer, looking forward to wrapping up at work now

[How to break into a program?]

Hello,

 

I am a TI-99/4A noob.  As a kid, I was mostly a Z80 user, but I've recently acquired a TI as a pandemic survival hobby and finally got the machine up and running (with TMS-RGB, FinalGROM99 and nanoPEB).  Now it's time to actually use it

 

For my question:  I've played with TurboForth a little and I like it very much.  However, I did not find a way to break out of an endless loop, so basically I reset the machine everytime I hung it up.  I imagine that there might be a way to break back into the Forth interpreter, but what would that be?  Is there a magic key combination that I have not guessed?  Likewise, when I start Extended Basic with the nanoPCB fresh from the factory plugged in, it seems to boot from the floppy into the nanoPEB configuration program.  How do I get to the Extended Basic prompt instead?

 

Any help would be appreciated!
-Hans