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Messages 14625 - 14654 of 15019   Newest  |  < Newer  |  Older >  |  Oldest
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14654
Can someone give me a good fixed point square root algorithm? I need to get the square root of a 22.10 fixed point number. I am brain dead when it comes to...
Thomas
SorcererXIII
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Dec 8, 2003
10:36 pm
14653
Hmm..i will look at this...the code is very old..pre gba release I think so probably not that reliable. -jason Jason Rogers aka Dovoto www.ThePernProject.com ...
dovoto@...
jason_lee_ro...
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Dec 1, 2003
7:03 am
14652
I tried everything and what worked was the rotation matrix reset values that you gave me. For some reason, it doesn't seem to work with the functions I...
ismstudios
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Nov 30, 2003
11:46 pm
14651
... tends to work in modes 0 or 1 with text backgrounds. Can anyone help? I would like to work in mode 2 with backgrounds 2 & 3. ... [code snipped] This code...
Damian Yerrick
yerricde
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Nov 30, 2003
6:41 pm
14650
Hi, I'm trying to learn how to use rotation backgrounds--my code only tends to work in modes 0 or 1 with text backgrounds. Can anyone help? I would like to...
Lewis Moronta
ismstudios
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Nov 30, 2003
3:41 pm
14649
Most of the time, I get away with just using the old trick of using edistance for values - that is largest plus 3/8s of smallest for 2D vectors and a similiar...
miked0801
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Nov 29, 2003
7:12 pm
14648
Hi Pete, ... This is fastest integer sqrt() function I'm aware of: isqrt: MOV r1,#(3 << 30) MOV r2,#(1 << 30) CMP r0,r2 SUBHS r0,r0,r2 ADC r2,r1,r2,LSL #1 CMP...
James Daniels
j_r_daniels
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Nov 28, 2003
3:07 pm
14647
... I've got sqrt functions which execute in 52 cycles worst case, or 70 cycles worst case. My gba_div routine isn't that fast though, so to get around this in...
Pete
dooby@...
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Nov 28, 2003
12:32 pm
14646
Hi all, I'm trying to write two classes Vector3 and Vector2, which store their components as 8bit fixed point values, to be used in a 3D library. Now I'm...
Pete Gunter
gunterpete
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Nov 28, 2003
2:11 am
14645
I finally got around to updating the dhrystone numbers now that gcc will build with -mthumb -O3. http://www.dwelch.com/gba/dhry.htm The gcc 3.4 (snapshot)...
David Welch
dwelchgba
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Nov 26, 2003
2:08 pm
14644
... In the console world, one typically uses the vertical blank to sync to a framerate, rather than any clock functions. There are a variety of ways to do...
Julian Squires
erovonket
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Nov 24, 2003
4:39 pm
14643
My last message contained a faux-pas, so I'm setting the record straight. ... In step 3 you should compare the global_time to start_time + 1 ( 1 / 60th of a...
Dave Mejia
j_dave_mejia
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Nov 23, 2003
5:08 pm
14642
I bought A game Shark for GBC, but it came with a cable that allowed me to connect it to my computor though a serial/paralle port. My question is can I use the...
opcodevoid2000
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Nov 23, 2003
5:00 pm
14641
... color black and cut out sprites that used this color as a backdrop color. You don't need to crosspost between forum.gbadev.org and the Y! Group. The NES...
Damian Yerrick
yerricde
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Nov 23, 2003
2:43 pm
14640
I'm working in mode 4 and I finally got two sprites to interact on stage. I have one problem though--the black bounding boxes that I drew them in shows when...
Lewis Moronta
ismstudios
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Nov 23, 2003
9:09 am
14639
Hi Lewis, A common method for controlling frame rates on the GBA is by setting up and using a global time counter variable (32 bit unsigned integer). Increment...
Dave Mejia
j_dave_mejia
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Nov 23, 2003
12:26 am
14638
Hello, I'm currently using gcc as my compiler for GBA dev. I'm currently trying to write a delay, or sleep function to slow down and maintain my frames and...
Lewis Moronta
ismstudios
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Nov 22, 2003
2:22 pm
14637
Hello, I'm new in the Gameboy Dev scene and I just wanted to know if you guys know of any small publishers that tend to pick up indie developers for royaltee...
Lewis Moronta
ismstudios
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Nov 22, 2003
9:51 am
14636
... Summary: Where did you put the command to compile the ISR? Your make.bat script looks like this: 8< 8< 8< begin 8< 8< 8< path=C:\devkitadv\bin g++ -c -O3...
Damian Yerrick
yerricde
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Nov 19, 2003
4:19 am
14635
All the .o files are being created apart from the isr.text.iwram.o one. I've tried it with and without the .text with the same results. I know I'm probably...
Pete Gunter
gunterpete
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Nov 18, 2003
8:47 pm
14634
... compile the project using the following makefile, I get the following errors (isr.text.iwram.o isn't being compiled) What is the output of "dir *.o"? Is...
Damian Yerrick
yerricde
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Nov 18, 2003
5:39 pm
14633
Thanks you guys, I had indeed got the bits wrong for HBlank and VBlank (doh!) and when I compiled it using Arm instructions it works fine. I couldn't seem to...
Pete Gunter
gunterpete
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Nov 18, 2003
2:13 pm
14632
Would you give your right ARM for a solution? ... Some suggestions here: 1. It's much faster to use 256 degrees than 360 degrees. 2. It saves memory to...
Damian Yerrick
yerricde
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Nov 18, 2003
4:43 am
14631
I believe your problem lies in the DST_ENABLE_HBLANK and DST_ENABLE_VBLANK definitions. I thinks yours are the wrong way around. I've been using: #define...
Graham Wall
prizeonion
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Nov 18, 2003
4:42 am
14630
Thanks so much for your help, I've incorporated the thumb code for the SWI from vboy.emuhq.com and it works nicely. Using it and your new interupt handler I've...
Pete Gunter
gunterpete
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Nov 18, 2003
2:32 am
14629
... Remember, you have to enable the interrupt in two places: at the source (REG_DISPSTAT) and at the mask (REG_IE). I notice that you are in fact doing this....
Damian Yerrick
yerricde
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Nov 18, 2003
1:22 am
14628
... Correct me if I'm wrong, but I don't think its necessary (wise?) to disable/enable interupts in your handler....
deathping
deathpingg
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Nov 18, 2003
1:21 am
14627
Hi all, Kinda hoping someone might be able to help me with interupts. I'm trying to use the HBlank interrupt, and will eventually attempt to use it for Mode 7...
Pete Gunter
gunterpete
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Nov 17, 2003
10:32 pm
14626
... Look in the section of GBATEK that covers "wait states." ... Assuming 3/1 wait state (as for official Game Paks), you'll need 16.8 MBytes per second (two...
Damian Yerrick
yerricde
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Nov 17, 2003
10:32 pm
14625
... I've read that Nintendo doesn't care about your source code or what compiler you use, only that 1. your binary doesn't crash and doesn't glitch when...
Damian Yerrick
yerricde
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Nov 17, 2003
10:31 pm
Messages 14625 - 14654 of 15019   Newest  |  < Newer  |  Older >  |  Oldest
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