Flawless Basic Parser

Darth Android · Posted: 16 Dec 2003 11:24:35 pm Post subject:

TI's Startup App does it, why cant we?

Adm.Wiggin · Posted: 17 Dec 2003 08:31:43 am Post subject:

actually, that isnt true.

TI's startup app just puts it in the queue so that the TI-OS runs it...

PLEASE correct me if i am wrong...

Darth Android · Posted: 17 Dec 2003 09:20:14 am Post subject:

ah, you are probably right. could you do and interrupt that checks the prgm running flag and if it is reset then launch the app and set im 1 so that it wont repeattedly launch the app every 1/150th of a second (kinda funny if you dont Smile

)

btw, how do you launch an app from asm?

sgm · Calc Guru Joined: 04 Sep 2003 Posts: 1265

There is an undocumented entry point called ExecuteApp. I completely forget its address and arguments.

NETWizz · Posted: 17 Dec 2003 02:07:21 pm Post subject:

Starting the program is not the problem. The problem is restarting the app after the program. Basically we do not have the privledge of just starting a program.

DarkerLine · Posted: 17 Dec 2003 03:47:30 pm Post subject:

NETWizz · Posted: 17 Dec 2003 04:55:00 pm Post subject:

Not that I know of. There is ExecuteApp, and ExecutePrgm that TI uses in the startup app. Obviouly we could use ExecutePrgm, but that would not resume Nimbus.

DarkerLine · Posted: 17 Dec 2003 05:03:46 pm Post subject:

So, could you not use ExecuteApp?

Adm.Wiggin · Posted: 17 Dec 2003 05:31:33 pm Post subject:

you could use some sort of hook to check if the prgm flag is unset, and if it is, then it could run your app, and remove the hook! Razz

DarkerLine · Posted: 17 Dec 2003 05:36:25 pm Post subject:

So you could do nothing without the app getting run?

I have a much better idea. Instead of making a basic parser, just make it so if a program is run from archive, it is unarchived then archived again when the prgmrunning flag is reset. You really don't need a second basic parser for reasons other than running archived programs.

62 52 53 53 · Posted: 17 Dec 2003 05:38:00 pm Post subject:

Step 1: set interrupt
Step 2: execute program
Step 3: program ends, triggers interrupt
Step 4: app executesl, uninstalls interrupt

DarkerLine · Posted: 17 Dec 2003 05:44:32 pm Post subject:

That would probably work.

Darth Android · Posted: 17 Dec 2003 07:20:14 pm Post subject:

thats what i said in my second post i think...

NETWizz · Posted: 17 Dec 2003 11:18:40 pm Post subject:

Well, that is all well and great, but it is not that simple either.

Darth Android · Posted: 17 Dec 2003 11:29:36 pm Post subject:

well, load the interrupt, save app state, call _executeprgm...is there something im missing?

62 52 53 53 · Posted: 18 Dec 2003 05:02:09 pm Post subject:

Yeah, that's what you said, but I divided it into steps because it seemed a bit confusing when you said it.

David · Posted: 15 Jan 2004 11:17:10 am Post subject:

Hey, Jbirk, what's the ExecutePrgm rom call you talked about?

I also believe that it is possible to run BASIC progs flawlessly. The app could for example write "prgmNAME" to the command buffer, install a keyhook, terminate the app, then let the keyhook send a fake [ENTER] keypress to start the program and restart the app afterwards.

NETWizz · Posted: 15 Jan 2004 02:48:44 pm Post subject:

Well David, the ExecutePrgm supposenly works just like ExecuteApp.

Unfortunatly, Michael Vincent who explained ExecuteApp in detail didn't even say the equate of ExecutePrgm.

Adm.Wiggin · Posted: 15 Jan 2004 06:13:52 pm Post subject:

maybe you should email him?
i dunno...

Keith Pierce · Advanced Member Joined: 02 Feb 2004 Posts: 411

hey i was wondering something! What are all the hooks the ti-83+/Se calcs use and are there others that havent been found yet or what?