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Tyraniek
Member
Joined: 07 Jun 2003
Posts: 133
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 Posted: 07 Jun 2003 11:20:54 am Post subject: |
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Hi !
(That's a good forum, but the other wasn't bad).
But let's talk about random numbers : Here is the code code that I use to generate a random entire number between 1 and 30 :
Code:
B_CALL(_OP1set0) ; all set to 0
B_CALL(_OP2set0) ;
B_CALL(_Random) ; OP1 is between 0 and 1
ld hl, 29 ; I want sth between 0 and 29 first
B_CALL(_setxxxxop2) ; and I put 29 in OP2
B_CALL(_fpmult) ; then OP1 = OP1 * OP2
ld d, 0 ; I want 0 decimals
B_CALL(_round) ; 0 <= OP1 <= 29
B_CALL(_convOP1) ; I put OP1 into A
inc a ; and then, 1 <= A <= 30
Wasn't it the right way to generate my random number ? It does not seem because every time I launch my program, the numbers are the same. I also used _RandomInit but it didn't seem to do something better...
Do you know how to generate a integer random number between 1 and 30 for exemple ? Without using your long own routines, if possible !
Thx |
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Adm.Wiggin
aka Tianon
Know-It-All
Joined: 02 Jun 2003
Posts: 1874
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| Posted: 07 Jun 2003 12:57:19 pm Post subject: |
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| if i were u, id go to education.ti.com and find the ti83plus rom call guide... it might help with the inputs and outputs of _randomint and _random |
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Tyraniek
Member
Joined: 07 Jun 2003
Posts: 133
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| Posted: 07 Jun 2003 01:53:34 pm Post subject: |
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I didn't find it (how bad is this site !!!!!!!!!!!!!!!!!)
nevermind |
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Job the GameQuitter
Member
Joined: 04 Jun 2003
Posts: 102
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| Posted: 07 Jun 2003 06:42:02 pm Post subject: |
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Yeah, education.ti really has a terrible structure  . The first time I went there I spent hours trying to find the SDK. And if you send them an email with a question about the hardware (the ports, to be exact), they reply with "sorry, we don't have any documentation on this subject" (actual quote). What?  You designed the friggin' calculator, you !$%  .
Anyway, I guess your "nevermind" implies that you've already found what you were looking form |
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62 52 53 53
Formerly known as 62 52 53 53
Active Member
Joined: 30 May 2003
Posts: 607
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| Posted: 07 Jun 2003 08:20:27 pm Post subject: |
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| What can you expect form TI-doesen't care? Something usefull. Come on, it's in the name: they don't care. |
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Adm.Wiggin
aka Tianon
Know-It-All
Joined: 02 Jun 2003
Posts: 1874
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| Posted: 07 Jun 2003 08:23:00 pm Post subject: |
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| "TI-cares", really, if they cared, then u wouldn't get an automated response to e-mails 1 week after requesting, then a real response 2 weeks after! u'd get a real response the next day (or before!), and it would answer ur question! they don't even do that! |
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NETWizz
Byte by bit
Bandwidth Hog
Joined: 20 May 2003
Posts: 2369
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| Posted: 08 Jun 2003 02:49:30 am Post subject: |
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TI really does care, but they only care about making money.
In other words, why answer your questions when you have already bought the calculator.
Finally, why not use the r register to generate a psudo random int.
Your method may not be much faster than the basic method. |
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Tyraniek
Member
Joined: 07 Jun 2003
Posts: 133
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| Posted: 08 Jun 2003 10:29:30 am Post subject: |
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That was also me. I didn't log in  And now, I've got my Dilbert avatar again  |
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NETWizz
Byte by bit
Bandwidth Hog
Joined: 20 May 2003
Posts: 2369
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| Posted: 08 Jun 2003 02:56:02 pm Post subject: |
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The method is simple sort of.
ld a,r ;r is the refresh register and we do not know what its value is
A contains a random number between 0 and 255 |
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John Barrus
Member
Joined: 25 May 2003
Posts: 131
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| Posted: 09 Jun 2003 12:14:18 am Post subject: |
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| I would just use the Ion routine that's already provided (Assuming you are programming for Ion). It's really easy to use and the output isn't tough to work with. If you aren't programming for Ion... wow, that's too hard for my brain to comprehend. |
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Justin W.
Shattered Silence
Advanced Member
Joined: 24 May 2003
Posts: 429
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| Posted: 09 Jun 2003 01:04:53 am Post subject: |
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If you're not programming in Ion you can get the routine from someone and paste it into your code. You will have to add this into the variable data of your program though.
Randdata:
.db $00,$00 |
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Adm.Wiggin
aka Tianon
Know-It-All
Joined: 02 Jun 2003
Posts: 1874
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| Posted: 09 Jun 2003 01:06:11 pm Post subject: |
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| ya, download the ion source, open ionlibs.asm or something like that, and copy the ionrandom routine! (adding the data var of course!) |
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Tyraniek
Member
Joined: 07 Jun 2003
Posts: 133
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| Posted: 09 Jun 2003 02:03:24 pm Post subject: |
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OK, I will download it, thank you.
And if I use the method with the R register, I have to use a mask with bit operators (or, and etc.) to select the bounds of my random number, haven't I ? |
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Tyraniek
Member
Joined: 07 Jun 2003
Posts: 133
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| Posted: 10 Jun 2003 09:00:34 am Post subject: |
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Thank you very much guys, it works perfectly, without having to install ION shell !
You're the bests !
thx  |
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NETWizz
Byte by bit
Bandwidth Hog
Joined: 20 May 2003
Posts: 2369
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| Posted: 10 Jun 2003 01:50:11 pm Post subject: |
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| No problem; we are here to help. |
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Z80 & 68k Assembly => z80 & ez80 Assembly
