Author Topic: Undocumented BASIC tricks (TI83/84 series) (Read 19146 times)

kalan_vod · « **Reply #15 on:** April 28, 2006, 03:30:00 pm »

QuoteBegin-Radical Pi+Apr 28 2006, 04:24 PM-->

QUOTE (Radical Pi @ Apr 28 2006, 04:24 PM)

The fifth argument can also be a variable, useful in Paint programs with eraser mode...

Yeah, I have save quite a few bytes this way

It is in the 83+ manual (line routine).

g28401 · « **Reply #16 on:** April 28, 2006, 05:28:00 pm »

I fixed DDR, (but not on my website yet) to not have Goto's inside an If Then loop. ya!

kalan_vod · « **Reply #17 on:** April 28, 2006, 05:48:00 pm »

QuoteBegin-g28401+Apr 28 2006, 11:28 PM-->

QUOTE (g28401 @ Apr 28 2006, 11:28 PM)

I fixed DDR, (but not on my website yet) to not have Goto's inside an If Then loop. ya!

Great, but why did you say it in here?

DJ Omnimaga · « **Reply #18 on:** April 29, 2006, 01:33:00 am »

it was goto/lbl talk as well kala

tifreak · « **Reply #19 on:** April 29, 2006, 01:46:00 am »

QuoteBegin-crzyrbl+Apr 29 2006, 02:06 AM-->

QUOTE (crzyrbl @ Apr 29 2006, 02:06 AM)

QuoteBegin-tifreak8x+Apr 24 2006, 07:09 AM-->

QUOTE (tifreak8x @ Apr 24 2006, 07:09 AM)

http://s4.invisionfree.com/TIFreakware/index.php?showforum=60

That is all that needs to be said.

*reads Definition of memory errors

uh oh, does recursion really cause a memory leak?

Everything listed in there is stuff that I have experienced to get a memory error. So yes, I guess it does.

kalan_vod · « **Reply #20 on:** April 29, 2006, 04:30:00 am »

QuoteBegin-xlibman+Apr 29 2006, 07:33 AM-->

QUOTE (xlibman @ Apr 29 2006, 07:33 AM)

it was goto/lbl talk as well kala

Sorry lol, I just didn't see it I guess >.>

Risen Phoenix · « **Reply #21 on:** June 07, 2006, 11:22:00 am »

Good teacher protection code
c1-->

CODE

ec1
:ClrHome
:1X
:While X
:Input "",Str1
:If Str1="DONE
:0X
:Disp expr(Str1
:Endc2

ec2
It's not optomized, but it can be used in programs to solve problems as if it was the homescreen. (to some extent)

Radical Pi · « **Reply #22 on:** June 07, 2006, 11:45:00 am »

While the topic is active again...

I discovered an interesting flaw in the interpreter. It only checks the condition on Repeat at the repeat's End. Thus a program, though memory erroring, like the following would cause no syntax error:

Repeat -----------------+++-++++++++-

Dragon__lance · « **Reply #23 on:** June 07, 2006, 03:20:00 pm »

that's cool

i have a question though, according to my understanding, the BASIC interpreter converts each line of BASIC code into ASM, checks for errors, and then executes it. If it is like this, can't there be a program that just first automatically converts the BASIC into ASM, thus gaining speed?

tifreak · « **Reply #24 on:** June 07, 2006, 03:45:00 pm »

Not really, because of the way asm s written and interpreted. And none of the normal variables are easily accessed, am not sure of the procedure, but you can use only 8 bit and 16 bit registers... To add in asm, you do:

inc a

or something very similar

I only have a simple understanding of asm...

Radical Pi · « **Reply #25 on:** June 08, 2006, 08:11:00 am »

The addition term you want would be add, not increment. Let's end any assembly controversy before it begins...

So yeah, I found an interesting glitch in TI-84+(SE) OS v2.30. Could someone confirm it elsewhere?

Good luck trying to take advantage of this undocumented trick.

DJ Omnimaga · « **Reply #26 on:** June 08, 2006, 08:31:00 am »

I know this is not pure basic but more xLIB related but in xlib if you want a non scrolling map engine to run faster you just have to store the map into a picture, and during the walkign loop just recall that picture instead of recalling the map over and over , it run much faster. Only downside: the last sprite row isnt displayed

Dragon__lance · « **Reply #27 on:** June 08, 2006, 08:39:00 am »

yep radicalpi, the glitch exists on Ti-83+ black additions

Do u guys know anyway to make a pic store all 64 rows of data?

DJ Omnimaga · « **Reply #28 on:** June 08, 2006, 08:42:00 am »

in BASIC or using an asm lib, no. xLIB wont even do it

you can use rigview tho

Radical Pi · « **Reply #29 on:** June 08, 2006, 08:55:00 am »

I thought you could use xlib to fill in those pixels, and RecallPic would revive those normally unobtainable spots?

Author Topic: Undocumented BASIC tricks (TI83/84 series) (Read 19146 times)

g28401

Risen Phoenix

Dragon__lance

Dragon__lance