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Author Topic: Axe Q&A  (Read 588382 times)

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Offline Quigibo

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Re: Axe Q&A
« Reply #450 on: June 05, 2011, 06:42:13 pm »
By the way, a faster way to determine if a number is 2 or 3 (since that's a continuous range) is like this:

Code: [Select]
If D-2<2
.D is 2 or 3
End
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Offline Runer112

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Re: Axe Q&A
« Reply #451 on: June 05, 2011, 06:46:26 pm »
Actually if you wanted to see if a number was 2 or 3:

Code: [Select]
!If D/2-1
.D is 2 or 3
End

4 bytes smaller. ;) But for general cases, yes, that's a good way to check if a number is in a certain range.
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Offline Darl181

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Re: Axe Q&A
« Reply #452 on: June 05, 2011, 08:42:26 pm »
* Darl181 was using 2 and 3 as example numbers :P

It gets interesting, like =6, =8, =10 or ^2.
And every statement is different.
« Last Edit: June 05, 2011, 08:42:40 pm by Darl181 »
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Offline Aichi

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Re: Axe Q&A
« Reply #453 on: June 10, 2011, 10:54:05 am »
Is
Code: [Select]
!If {L5 + 22} + 1 . Check if that byte is 255equal to
Code: [Select]
!If {L5 + 22} - 255 . Check if that byte is 255?

It seems to be different, for whatever reason.
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Offline Runer112

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Re: Axe Q&A
« Reply #454 on: June 10, 2011, 10:58:47 am »
They're different. Although the memory read only reads a 1-byte value, all Axe math is done with 2-byte numbers. So the first statement would evaluate to 255+1=256, which is nonzero and will not activate the !If condition.
« Last Edit: June 10, 2011, 10:59:19 am by Runer112 »
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Offline squidgetx

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Re: Axe Q&A
« Reply #455 on: June 10, 2011, 11:00:37 am »
Solution: the sign{} command. It'll take a one-byte value and convert it into the appropriate two byte number.
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Offline Munchor

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Re: Axe Q&A
« Reply #456 on: June 10, 2011, 11:01:45 am »
I would like to know what the free lists are in Axe, are there any lists I can save numbers to? Thanks.
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Offline Runer112

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Re: Axe Q&A
« Reply #457 on: June 10, 2011, 11:14:11 am »
The Commands.htm file included in Axe releases has a pretty good summary of the L1-L6 RAM areas. And you can save data to any section of RAM you want. The question is what it will corrupt.

Quote from: Commands.htm
L1 = 714 bytes (saveSScreen) Volatility: LOW
L2 = 531 bytes (statVars) Volatility: LOW (Do not use this area when custom interrupts are enabled, including Mirage OS)
L3 = 768 bytes (appBackUpScreen) Volatility: MED (Saving to back-buffer will corrupt)
L4 = 256 bytes (tempSwapArea) Volatility: MED (Corrupt when archiving/unarchiving in program)
L5 = 128 bytes (textShadow) Volatility: MED ("Disp","Output", and "ClrHome" will corrupt)
L6 = 768 bytes (plotSScreen) Volatility: HIGH (Any buffer drawing will corrupt)
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Offline Aichi

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Re: Axe Q&A
« Reply #458 on: June 11, 2011, 03:32:36 pm »
Does
Code: [Select]
If 20 - {E} -> {E} > 10return something wrong or rather something other than
Code: [Select]
20 - {E} -> {E}
If {E} > 10or is it just me? Is the upper code not working because the TI needs already HL for taking the E'th byte from the RAM?
« Last Edit: June 11, 2011, 03:33:17 pm by Aichi »
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Offline Quigibo

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Re: Axe Q&A
« Reply #459 on: June 11, 2011, 03:36:37 pm »
Those return different things.

Something->{E} will return E instead of {E} after the store since E is variable.  On the other hand, if you store to a constant location like Something->{L1} then it will return {L1} instead of L1.  This strange behaviour is only because it leads to massive optimizations in the executables.
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Offline Runer112

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Re: Axe Q&A
« Reply #460 on: June 11, 2011, 03:41:25 pm »
Those two blocks of code are different in a few ways:

  • Whereas the first block of code stores the value 20-{E} to the byte pointed to by E, the second block of code stores this value directly to E. In this case, the first block of code probably does what you want.
  • Whereas the second block of code compares the value of the byte pointed to by E to 10, the first block of code compares the value of E to 10. In this case, the second block of code probably does what you want.

Put the two together and you get this, which I believe should do what you want:
Code: [Select]
If {20-{E}→{E}}>10
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Offline Munchor

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Re: Axe Q&A
« Reply #461 on: June 11, 2011, 04:13:55 pm »
Quote from: Runer112 on June 10, 2011, 11:14:11 am
The Commands.htm file included in Axe releases has a pretty good summary of the L1-L6 RAM areas. And you can save data to any section of RAM you want. The question is what it will corrupt.

Quote from: Commands.htm
L1 = 714 bytes (saveSScreen) Volatility: LOW
L2 = 531 bytes (statVars) Volatility: LOW (Do not use this area when custom interrupts are enabled, including Mirage OS)
L3 = 768 bytes (appBackUpScreen) Volatility: MED (Saving to back-buffer will corrupt)
L4 = 256 bytes (tempSwapArea) Volatility: MED (Corrupt when archiving/unarchiving in program)
L5 = 128 bytes (textShadow) Volatility: MED ("Disp","Output", and "ClrHome" will corrupt)
L6 = 768 bytes (plotSScreen) Volatility: HIGH (Any buffer drawing will corrupt)

Thanks I guess L5 is the one I can use.
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Offline Aichi

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Re: Axe Q&A
« Reply #462 on: June 13, 2011, 06:52:22 pm »
How can I increase / decrase the contrast? I don't get it.
Shade( {E8447} + 1) just crashes my TI. :/
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Offline yunhua98

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Re: Axe Q&A
« Reply #463 on: June 15, 2011, 12:58:57 am »
I thought you need {E8447}^r?
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Offline Aichi

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Re: Axe Q&A
« Reply #464 on: June 15, 2011, 03:36:17 pm »
Quote from: yunhua98 on June 15, 2011, 12:58:57 am
I thought you need {E8447}^r?

I forgot the r in my post, sorry.^^
Shade( {E8447}r + 1) doesn't work.
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