RE: RE: A83: Apps, adding to current menues
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RE: RE: A83: Apps, adding to current menues
Hey Robby,
You have no reason whatsoever to feel dumb. I still don't have a
clue how to do this stuff, but I'm getting help. My computer science
teacher is suggesting a website with a tutorial for this stuff? Would you
like it, and do you have any stuff you can give me to get started?Thanks
alot and your conversation with Dan is quite interesting considering I
understand about 2% of it.
Till We mail again,
The Direct G
On Tue, 28 Nov 2000, Robby Proie wrote:
>
> OK, I think that I am finally starting to understand exctlly what is going
> on. First of all, I would like to sincearly thank you for all of the help
> you have give me so far. I am not the best coder, however I am slowly
> learning, and will probably have many more questions. Ok, here are my list
> of quesstions.
> Note: Many of them will make refrences to mirage.
>
> 1. This is more of a process question than codiing (I think).
>
> When you say that TIOS will pass you something, does that mean that mirage
> is running in the background, that you have edited the rom, or that you have
> simply set a little hook? (I am pretty sure it is the hook, but just to
> save myself from a lot of no purpose work, I thought I would make sure).
>
> 2. How exactly do you check the keypress. I think that you told me this
> before, but I didn't quite understand it.
> To expound, does the keypress cause tios to jump to a certain place, orrun
> a certain process or what.
>
> 3. When you say look at bit 3 of port 4, how do you do that? (I think I was
> just inspired, by port 4, are you talking about the Direct input of keys
> port?)
>
> 4. How do you call a certain screen through this. For instance the apps
> screen. This would be helpful in coding. To be more spacific do you just
> do a LD $B1,$27 or is it a little bit more complex.
>
> 5. 2 letters ago you said that I should use B_CALL $4F7B to set the key hook
> (which answers question 1 for me), however, when I try to compile it with
> ZDS, it gives me an error. Do I have to define it first?
>
> I know you probably think I'm not the brightest thing with two legs after
> you have read these questions, but I guess that this is the only way for me
> to learn.
>
> Thanks,
> Robby
>
> -----Original Message-----
> From: owner-assembly-83@lists.ticalc.org
> [mailto:owner-assembly-83@lists.ticalc.org]On Behalf Of Dan Englender
> Sent: Monday, November 27, 2000 10:54 PM
> To: assembly-83@lists.ticalc.org
> Subject: Re: A83: Apps, adding to current menues
>
>
>
> See, the problem is that it's quite complicated to do that sort of thing. I
> don't have any really great code to copy and paste in here, but I'll try to
> give you a start at least.
>
> First of all, if you want to make your life much easier, use an
> [on]+something hotkey combination. This way TIOS will still read it as a
> keypress and pass you the "something" during the $1B pass of the key hook.
> You can then just check to see if the [on] key is currently pressed when you
> receive the proper key and jump to your handler code if it is. To check if
> the [on] key is pressed, just look at bit 3 of port 4. If the bit is a 0,
> then the [on] key is currently being pressed.
>
> Then you want to do something once you receive this keycode, and you picked
> a hard one - start an application. There might be a RunApplication entry
> point laying around somewhere undocumented but if there is, I don't know
> about it. And running an application by just jumping to it's start address
> could get a touch messy due to context and other issues. So the best way
> (though it's a very ugly hack) to run an app as far as I know is to make the
> system pretend that you ran the app from the keyboard.
>
> How do you do this? Well, first you need to load the APPS menu. That's not
> so hard, just return the APPS key scan code from the $1B that you detected
> (should be $27 I think). However, you'll have to set some sort of indicator
> to yourself, so that you know that you should continue loading the app.
> System flags are dangerous to use, though I'm not real sure of anything
> better. Anyhow, in the next $1B pass through the key code, when you see
> that the indicator was set, load the name of the application into the
> progName memory address, and pass the enter key as being pressed. It's a
> pretty weird system, but the TIOS will run the app loaded in progName
> whenever the enter key is pressed at the APPS menu (which is good luck since
> it would have been a pain in the neck otherwise).
>
> There's just one little detail left (which you're probably wondering about).
> If this is the method I use to run MirageOS with key hooks, why don't you
> see the APPS menu pop up? Well, in version 1.1, if you don't have auto-sort
> enabled, you do see the APPS menu pop up for just a second. What I did was
> turn of the LCD before I loaded the APPS menu, then turned it back on once
> MirageOS starts. That way the user can't see the APPS menu at all.
> Unfortunately for me, I slightly botched the order of things up in 1.1 so
> that if auto-sort is off, you see the APPS menu briefly.
>
> Hope this helps at least a bit,
> -Dan Englender
>
> P.S. I figured all this out by trial and error. Took a while...
>
> ----- Original Message -----
> From: "Robby Proie" <playnogamz@nls.net>
> To: <assembly-83@lists.ticalc.org>
> Sent: Monday, November 27, 2000 8:38 PM
> Subject: RE: A83: Apps, adding to current menues
>
>
> >
> > I'm not sure that I understand what you are saying. Lets say that I
> wanted
> > to call a one page app called "THEAPP" when the user presses the shift key
> > and than the clear key (If that is possible). What would the exact code
> be
> > the set this up. If that key-combo is not possible, than what about if
> they
> > help the ON key and then pressed enter (which is somewhat like mirage's
> > ON+APPS key combo). Thanks for your help so far.
> >
> > Robby
> >
> > P.S. How have you figured out all of this information?
> >
> > -----Original Message-----
> > From: owner-assembly-83@lists.ticalc.org
> > [mailto:owner-assembly-83@lists.ticalc.org]On Behalf Of Dan Englender
> > Sent: Sunday, November 26, 2000 4:16 PM
> > To: assembly-83@lists.ticalc.org
> > Subject: Re: A83: Apps, adding to current menues
> >
> >
> >
> > Hmm...I guess it doesn't help you too much if you don't know how to
> activate
> > it, right? To activate it, load the address of the hook into HL, then ROM
> > page of the hook into A, and then B_CALL $4F7B. This is equivalent to
> > doing:
> > ld hl,hookaddr
> > ld ($9B88),hl
> > ld a,hookpage ; or 'in a,(6)' if you're on the hook
> > page
> > ld ($9B8A),a
> > set 0,(iy+34)
> >
> > -Dan Englender
> >
> > ----- Original Message -----
> > From: "Dan Englender" <dan@calc.org>
> > To: <assembly-83@lists.ticalc.org>
> > Sent: Sunday, November 26, 2000 4:11 PM
> > Subject: Re: A83: Apps, adding to current menues
> >
> >
> > >
> > > This is answer to both this message and the one posted earlier by
> "Direct
> > > G".
> > >
> > > There are two key hooks. The more interesting one is what is usually
> > called
> > > the GetKey hook. It's called during the TIOS key handler. It's called
> > once
> > > on entry to the key handler, then once with the scan code of the current
> > key
> > > being pressed. You can tell whether it's the former or latter condition
> > by
> > > checking the A register. A value of $1A is passed if it's the on-entry
> > > call, or a value of $1B if it's a "key pressed" call. If it was $1B,
> then
> > > the GetCSC scan code value will be in register B.
> > >
> > > In either case, returning the z flag set will abort the process, and nz
> > will
> > > continue. If the entry value was $1A, you don't have to return anything
> > > special, if it was $1B, then you have to return the GetCSC scan code
> value
> > > that you want the system to process in register A. Make sure you don't
> > just
> > > ret after obtaining a $1B, or you're going to get a lot of 5's on your
> > > screen.
> > >
> > > Hope this helps,
> > > -Dan Englender
> > >
> > > ----- Original Message -----
> > > From: "Robby Proie" <playnogamz@nls.net>
> > > To: <assembly-83@lists.ticalc.org>
> > > Sent: Friday, November 24, 2000 4:18 PM
> > > Subject: RE: A83: Apps, adding to current menues
> > >
> > >
> > > >
> > > > Is there any information you could give me about key hooks as of now.
> > > Even
> > > > if it isn't fine tuned, I could sure use it. Don't worry about any of
> > the
> > > > other hooks
> > > >
> > > > -----Original Message-----
> > > > From: owner-assembly-83@lists.ticalc.org
> > > > [mailto:owner-assembly-83@lists.ticalc.org]On Behalf Of Dan Englender
> > > > Sent: Thursday, November 23, 2000 10:34 PM
> > > > To: assembly-83@lists.ticalc.org
> > > > Subject: Re: A83: Apps, adding to current menues
> > > >
> > > >
> > > >
> > > > You wouldn't. There's no released information anywhere related to
> them.
> > > > I'll get around to typing up the notes about them scribbled through my
> > > > various notebooks sometime, and then release the information.
> > > >
> > > > -Dan Englender
> > > >
> > > > ----- Original Message -----
> > > > From: "Robby Proie" <playnogamz@nls.net>
> > > > To: <assembly-83@lists.ticalc.org>
> > > > Sent: Thursday, November 23, 2000 5:33 PM
> > > > Subject: RE: A83: Apps, adding to current menues
> > > >
> > > >
> > > > >
> > > > > Where would I find information on key hooks and other types of
> hooks?
> > > > >
> > > > >
> > > >
> > > >
> > > >
> > >
> > >
> > >
> >
> >
> >
>
>
>
>
References: