Omnimaga

General Discussion => Introduce Yourself! => Topic started by: gcolella on February 08, 2011, 08:02:56 pm

Title: Hey world -gcolella
Post by: gcolella on February 08, 2011, 08:02:56 pm

Hey world of onimanga, I'm a programming fanatic with a particular affinity for TI calcs. I'm irl friends with ashbad, I taught him BASIC when he was just starting out. He suggested I join, it seemed awesome, and here I am.

In BASIC I can't compete with you asm programmers in games, so I've moved primarily to math programs. I have a small API going, but it needs a lot more work.

Title: Re: Hey world -gcolella
Post by: squidgetx on February 08, 2011, 08:04:06 pm

Welcome to Omni. Here are your peanuts XD

!peanuts

Title: Re: Hey world -gcolella
Post by: Ashbad on February 08, 2011, 08:04:24 pm

yes, he's a great BASIC programmer :)

welcome here, at last!  hopefully you don't lose interest after 3 posts like you did on TKZ (even though TKZ is a bunch of pr**ks) :P

good to see a IRL friend here :)

Title: Re: Hey world -gcolella
Post by: Xeda112358 on February 08, 2011, 08:05:16 pm

Hey, I program in assembly a lot, but I still love BASIC! If you ever need a simple program (like an asm opcode) feel free to ask me :D ... I've been making a lot of custom stuff lately ;D

Title: Re: Hey world -gcolella
Post by: FinaleTI on February 08, 2011, 08:06:44 pm

Welcome! Hope you enjoy your stay.
And remember, an Omnimagan can never have too many peanuts. :P
!peanuts

Title: Re: Hey world -gcolella
Post by: ztrumpet on February 08, 2011, 08:12:21 pm

Hmm, who says Basic can't compete... http://www.omnimaga.org/index.php?action=downloads;sa=view;down=534 ;D

Welcome here, gcolella.:)

Title: Re: Hey world -gcolella
Post by: Xeda112358 on February 08, 2011, 08:21:16 pm

Yeah, really, there are some pretty amazing BASIC programs out there. The one advantage BASIC has over assembly is size (in many cases). To give an example, in BASIC, you can do 512*36 to get 18432. In assembly, to do 512*36 and then return  the value in Ans:

Code: [Select]

110002
3E24
210000
0608
290730011910F9
EF9247
EF5641
EFBF4A
C9
The great part is, that uses some shortcuts that aren't available without the OS (particularly the last lines that started with "EF"). You could easily tack on another 100 bytes if you wanted to be intense...
not that I've done that...
...ever...
>_>

Title: Re: Hey world -gcolella
Post by: AngelFish on February 08, 2011, 08:27:20 pm

Xeda, we know you would be perfectly happy without an OS if you had some way of running programs :P

Anyway, BASIC is a great language. A good BASIC programmer can do quite a bit. Plus, math in Assembly is a serious pain...

Title: Re: Hey world -gcolella
Post by: Ashbad on February 08, 2011, 08:31:16 pm

true, took me a month to figure out how to divide numbers in asm x.x

Title: Re: Hey world -gcolella
Post by: shmibs on February 08, 2011, 08:31:33 pm

/\agreed (referring to QWERTY's post)
and if you feel limited graphics-wise you should definitely test out all the amazeface libs that have been coming out recently (such as Kerm's DCS7 libs, HOT_DOG's Correlation, and Xeda's BatLib).

Title: Re: Hey world -gcolella
Post by: AngelFish on February 08, 2011, 08:37:35 pm

Quote from: Ashbad on February 08, 2011, 08:31:16 pm

true, took me a month to figure out how to divide numbers in asm x.x

/me has been having nightmares about subtraction and bit shifts lately because of that

Title: Re: Hey world -gcolella
Post by: Xeda112358 on February 08, 2011, 08:38:13 pm

... Yeah, that isn't an exaggeration... I would love working sans OS! Oh and the math thing, too :P
here are some example of math operations in assembly >_>
...

Spoiler For Spoiler:

Code: [Select]

Divide two numbers up to 65535:
3E1011000029EBED6AEBF57AB820027BB938052CEBED42EBF13D20E9C9

Multiply two numbers up to 65535:
1100003E10EB29EB293001093D20F6C9

Rounded division (using a number 0~65535 divided by a number 0~255):
0610AF2917B938022C9110F7CB39B93803239191C9C9

Divide a super large number by a number 0~255:
0600E5092B7907070757AF41B7CB162B10FB1709BB380293341520EFE141577EB720040D2310F87A0600C9
Okay, so that last one is actually an advantage over in BASIC in some situations (like if you are working with a 70 digit number :P

But yeah, I wanna see what you come up with ^-^

Have you ever made an arbitrary precision math program !?! I do that when I get bored... I like to look at the square root of numbers extended to like the bajillionth decimal place :D

Title: Re: Hey world -gcolella
Post by: gcolella on February 08, 2011, 10:03:41 pm

Lemme rephrase that, *I* can't compete in BASIC, at least not yet. Partly due to how much slower complicated games run in basic.
And my math programs use subroutines to make everything into strings and the like, and then concatenate it to show all its work, which seems too complicated for me in asm.

Do any of you happen to know asm for x86?

Title: Re: Hey world -gcolella
Post by: Xeda112358 on February 08, 2011, 10:05:45 pm

Not I, but concatenating is kind of weird to wrap your brain around in assembly. Once you do, it is rather easy, though.

But yeah, there is a speed advantage in assembly :D

Title: Re: Hey world -gcolella
Post by: gcolella on February 08, 2011, 10:07:13 pm

Isn't the speed advantage huge? Especially on 83+'s, which I usually use now when I borrow from people (I lost my nSpire a little while ago)

Title: Re: Hey world -gcolella
Post by: Xeda112358 on February 08, 2011, 10:10:30 pm

Well, to do some of the math functions, there is almost no difference in speed (like if you were to make your own floating point math routines, it would be similar to the OS codes). However, in almost all cases the speed increase is huge due in part to the fact that we usually don't use floating point numbers on the calc. Plus, we can draw directly to the screen to make sprites instead of using pixels and lines and stuff...

Title: Re: Hey world -gcolella
Post by: souvik1997 on February 08, 2011, 10:13:51 pm

And that BASIC is interpreted, while assembly is compiled.

Title: Re: Hey world -gcolella
Post by: Xeda112358 on February 08, 2011, 10:18:46 pm

Yeah... but I have been working on a code interpreter and interpreted code is about as fast as compiled code. It is actually all the parsing that slows BASIC down. Like for example, if you did sum({0,1,2,3,4,5} it has to convert all of those numbers that are separated by commas into 9 byte floating point numbers and it has to create a list temporarily that has those elements then it executes the sum( command. If they had made it "tokenize" the way it is done on an 89, the BASIC codes would be interpreted so much faster.

The downside is that tokenizing code for the first time may take a little while, but after that it no longer needs to tokenize (until the program is edited again). Also, tokenizing sometimes shrinks the program a little.

Title: Re: Hey world -gcolella
Post by: DJ Omnimaga on February 10, 2011, 06:22:08 pm

One major issue too is how much harder ASM is than TI-BASIC and Axe, due to TI-BASIC being closer to english than ASM. This is why there are so few ASM/Hex programmers compared to TI-BASIC and Axe. Basic is very slow, though, and data is large, so it effectively limits your freedom. We can do good BASIC games, though.

Welcome on the forums and I hope you enjoy your stay!

Title: Re: Hey world -gcolella
Post by: AngelFish on February 10, 2011, 06:24:29 pm

Quote from: gcolella on February 08, 2011, 10:07:13 pm

Isn't the speed advantage huge? Especially on 83+'s, which I usually use now when I borrow from people (I lost my nSpire a little while ago)

It depends on what you're doing. The OS itself is written in ASM, so if you were to try doing the same things that the OS has to do to run BASIC, there'd be no significant improvement.

Title: Re: Hey world -gcolella
Post by: gcolella on February 10, 2011, 06:42:43 pm

I suppose, but for things like for loops and such that run so slowly, it seems like it would improve a lot.
Does anyone know of a routine that would let me make str->int? i would sanitize my input, it wouldn't have to deal with anything not a number. I could only find int->str googling.

Title: Re: Hey world -gcolella
Post by: AngelFish on February 10, 2011, 06:44:13 pm

In TI-BASIC? expr(Str1->A will convert a string into a number and store it in A. If you only want to convert part of the string, use the Sub( command as well.

In Axe, strings are already numbers. Just subtract _E30 from the value pointed to by whatever pointer you're using.

Title: Re: Hey world -gcolella
Post by: gcolella on February 10, 2011, 06:47:00 pm

Well, that explains why I couldn't find a routine for it, it was self-explanatory. Thanks, I'm surprised it was that obvious and i didn't find it.

Title: Re: Hey world -gcolella
Post by: Ashbad on February 10, 2011, 07:39:56 pm

ah, that's fine greg :)

can't believe I forgot about Expr() though O.o