Search found 32 matches

by shifty
Sun Oct 29, 2006 1:55 am
Forum: PSP Development
Topic: Flipping the Screen (actually rotating 180 degrees)
Replies: 4
Views: 2873

rotate screen 180 degrees

hi! I wonder if you mean "rotate the virtual image 180 degrees" ? This would be cool for some games, I think, too. especially, two-player ones. I don't know of any inherent ability to do this in PSP, but *I* think it could be best achieved by writing wrappers of all the graphics functions ...
by shifty
Thu Aug 31, 2006 7:14 am
Forum: PSP Development
Topic: MP3 Buffered Playback
Replies: 10
Views: 8942

peterm's libmad mp3 code and latency

hi all! I'm using a variation on peterm's code and it's working very nicely, except that there seems to be a huge amount of latency between the file starting to play and actually hearing the sound. Counting samples into the file, I found that for the first 7 seconds of the playback, mad_synth_frame ...
by shifty
Tue Jul 18, 2006 7:33 am
Forum: General Discussion
Topic: FW2.6 downdate festival in NYC July 22nd?
Replies: 0
Views: 2218

FW2.6 downdate festival in NYC July 22nd?

Hi! My friend and I are doing a little project in NYC on July 22nd or July 23rd. We're going to help people install linux or rockbox on their iPods, and we also want to help people downdate their PSP firmware from 2.6 to 1.5 or 1.0. Only problem is, we only have firmware 1.5, so we're looking for so...
by shifty
Mon May 22, 2006 11:53 pm
Forum: PSP Development
Topic: Preparing Mac OS X for PSPSDK
Replies: 29
Views: 25238

make -r fix builds

this fix:
## Build the source.
$MAKE clean; $MAKE -r || { echo "ERROR BUILDING BINUTILS"; exit; }
gets you through binutils.

thanks everyone, now on with the rest!
by shifty
Tue May 09, 2006 4:11 am
Forum: PSP Development
Topic: Bricked PSP with 1.5
Replies: 31
Views: 17977

hang onto it

Hagbard, I'd hang onto that PSP for a little while before doing anything else with it. Projects are going on that make it foreseeable to potentially restore flash. These experiments suggest restoring from older firmwares would be easiest, because it seems fw's 2.6 and up have a little something extr...
by shifty
Tue May 02, 2006 9:06 am
Forum: PSP Development
Topic: Service mode by power supply pins?
Replies: 68
Views: 76815

>If I were you, I would lock this thread :-) But a continuity tester reveals, >that there is nothing magic about these pins (check against + and GND). >Right, it's been confirmed that the 2 pads are the same as the power supply >jack. But I'm not convinced that you couldn't use the power supply to s...
by shifty
Wed Apr 26, 2006 8:45 am
Forum: PSP Development
Topic: PSP Multi Firmware Mod
Replies: 27
Views: 64843

just a theory...mac address?

I just wanted to float my theory that the MAC address of the wifi could
be used at update time to make it difficult to simply transfer the
contents of one PSP's flash to another's.

(That's what I'd do if I were Sony...)

-N
by shifty
Wed Apr 12, 2006 4:36 am
Forum: PSP Development
Topic: Read PSP NAND Flash DATA to PC
Replies: 35
Views: 33293

invalid blocks

I believe it is unwise to completely recreate the entire chip from another, because you'll lose the invalid block information on your own flash. if you lose the invalid block information on your own flash, you might write to a bad block. all bets are off, then. 2013 of 2048 blocks are guaranteed, an...
by shifty
Tue Apr 04, 2006 10:48 am
Forum: PSP Development
Topic: Read PSP NAND Flash DATA to PC
Replies: 35
Views: 33293

need a bricked psp

okay folks, i've ordered the chips i need to make the parallel port <-> in circuit flash adaptor i described earlier. now i just need a bricked PSP to experiment with. Can anyone supply one here? you *will* get it back and possibly even with a new rev of firmware. please contact me privately (throug...
by shifty
Thu Mar 30, 2006 10:11 am
Forum: PSP Development
Topic: Read PSP NAND Flash DATA to PC
Replies: 35
Views: 33293

impressive and strategy

This is very impressive. I am finding it hard to believe that all flash traces are on the top layer. Can someone confirm this? (zoomed, non-blurry photo would help construction). Additionally, are Vcc and Vss also on top? How about if we were to use simplified hardware, say a parallel port with a bu...
by shifty
Thu Dec 15, 2005 4:23 am
Forum: PSP Development
Topic: Ethernet connection
Replies: 7
Views: 4604

eth to wifi

"I won't carry a device that converts ethernet to wireless ethernet, but
I will carry a device that converts ethernet to serial.
by shifty
Mon Nov 21, 2005 1:28 pm
Forum: PSP Development
Topic: .GIF support, viable?
Replies: 28
Views: 8974

gif expires soon

1) according to http://www.gnu.org/philosophy/gif.html the LZW (part of GIF) patent will expire in August 2006! You might as well go for it in the meantime! Who's going to bother with a few teenagers with a free distribution over the next year? A good place to find gif source code is the "xv&qu...
by shifty
Thu Oct 20, 2005 12:07 am
Forum: PSP Development
Topic: What do we know about VME ?
Replies: 14
Views: 97441

VME...

If it's an FPGA, then I could understand why most devs cannot use it. FPGA code is described at a level even lower than assembly language. Sophisticated tools are necessary to ensure that all gates have received their electrons on time! Nevertheless, there are plenty of competent FPGA programmers ou...
by shifty
Thu Sep 01, 2005 9:49 pm
Forum: PSP Development
Topic: # of Simultaneous Audio Voices
Replies: 6
Views: 2835

# of Simultaneous Audio Voices

Hi! This question is for people who have implemented mod players, midi players and other audio/music stuff. What is the most # of channels you have gotten playing (active) at once on PSP? And are you using floating point or fixed. And are you using bilinear, cubic, sinc, or non-interpolated, etc? Sy...
by shifty
Tue Aug 30, 2005 8:47 pm
Forum: PSP Development
Topic: DJSP v0.14a release 8-25-2005
Replies: 30
Views: 29604

Script and suggestion

Here is my script for a Bark band-based spectrum analyzer. The Bark bands are groupings of frequencies that more closely match what your ear hears than the perfect FFT analysis bins. BTW, analyzeAudio() is very slow, but there's a faster way...since the mp3 file stores compressed FFT data, you can s...
by shifty
Fri Aug 12, 2005 5:15 am
Forum: PSP Development
Topic: p-sprint (psp keyboard emu)
Replies: 77
Views: 68807

Ah, now i get it. Maybe you could draw it like so: l &#58; abc def u &#58; ghi jkl r &#58; mno pqr &#91;&#93;&#58; stu vwx /\&#58; yz ...and just because i don't want to sleep, let's consider an efficient layout, the most valuable six: ESAIRN l &#58; e.. ... u &#5...
by shifty
Wed Aug 10, 2005 9:40 pm
Forum: PSP Development
Topic: p-sprint (psp keyboard emu)
Replies: 77
Views: 68807

I've come up with a new idea for this: Code: l u r s t o a!, (-) cde ijk opq uvw :?; 'ab fgh lmn rst xyz sorry. i don't quite understand it...but i'll wait for you to explain it more. When typing a lot, I also noticed that some button combinations are easier to type. You would probably gain a lot o...
by shifty
Wed Aug 10, 2005 7:54 am
Forum: PSP Development
Topic: p-sprint (psp keyboard emu)
Replies: 77
Views: 68807

really good and some points

First, I *really* like the idea of two-press combos to type! I also like the way the middle letters are slightly raised- matches the buttons well. Second, it feels backwards to me...I continuously hit the second press, then the first. For some reason, when I locate e.g. 'n' on the screen, my fingers...
by shifty
Fri Aug 05, 2005 11:43 am
Forum: General Discussion
Topic: 3+ copies of same homebrew on memstick doesn't work?
Replies: 2
Views: 2505

3+ copies of same homebrew on memstick doesn't work?

Here's a weird one: I wanted to put three copies of PSPKick on the same memstick so I could work on three different songs while on a trip. So I made two copies of the main one...but only two show up in the memstick menu! Figuring I'd done something stupid, I wiped the copies and repeated it v e r y ...
by shifty
Wed Aug 03, 2005 11:50 pm
Forum: PSP Development
Topic: Atari 2600 Emulator - Help Wanted...
Replies: 7
Views: 3595

Atari 2600 Emulator

Hey man, how's the progress on the atari 2600 emu?

You said you were stuck with the sound...
Could I help out? I love the 2600 and have worked with
it's emu sound before, and have worked with sound on
the PSP.

Man sieht sich,
by shifty
Tue Aug 02, 2005 12:52 pm
Forum: PSP Development
Topic: Firmware 2.0 - new modules
Replies: 25
Views: 19626

japanese 2.0 to american 2.0

hi,

we know 2.0japan can upgrade
to 2.0american, thanks to sony's announcement (as fwded by
pspupdates), but what if someone in japan upgrades to
2.0american...can they get 2.0japan back? It might be
nice if we could flip back and forth repeatedly to observe
things...
by shifty
Sat Jul 30, 2005 12:12 pm
Forum: PSP Development
Topic: How does kxploit work?
Replies: 18
Views: 7442

Homebrew on 2.0

I used to think I was smart, but I've been learning so much from the developers in this forum. I am very impressed with their levels of competence...from figuring out the GU, to figuring out the ME, to setting up the kernel stubs webpage, to archiving all the modules, to listing the part numbers of ...
by shifty
Tue Jul 19, 2005 4:54 am
Forum: PSP Development
Topic: audio help
Replies: 29
Views: 12558

nem's wav loader, bug

hey all, just wanted to let you know, there's a bug in nem's wav loader. It uses almost exclusively hardcoded offsets...and from time to time you will find exceptions. One of the most painful I found while coding PSPKick is that the WAVE header length is not always 0x10. Sometimes it's 0x12. Therefo...
by shifty
Tue Jul 19, 2005 2:24 am
Forum: PSP Development
Topic: JPEG EXPLOIT?????
Replies: 3
Views: 4454

jpeg exploit stuff

over at this (apparently now-defunct?) webforum, I posted some code to randomly corrupt jpegs, in groups of 100. when you view them, you sometimes get a crash: http://psplinux.sourceforge.net/forum/viewtopic.php?t=15&sid=c7fc6d13676c2fcefa11827455d08ff5 in the meantime, you get lots of neat, dis...
by shifty
Mon Jul 11, 2005 2:27 pm
Forum: PSP Development
Topic: pspIRC
Replies: 22
Views: 10859

pspirc and keyboard apps in general

Hi, I am interested in PSPIrc and especially in the big questions of the PSP as keyboard input device. I would like to encourage a lot of creativity in developing a good text-entering interface on the PSP. I believe the initial one in the PSP Firmware is not a good final solution. It does have some ...
by shifty
Wed Jul 06, 2005 4:33 pm
Forum: PSP Development
Topic: Atari 2600 Emulator - Help Wanted...
Replies: 7
Views: 3595

hurry for 2600 emu

first of all, i want to encourage you in your 2600 emu port! I'm very eager to see it. 2nd of all...the actual porting advice...here's an idea: start with the Dreamcast port of Stella: http://svolli.de/software/dcstella/ it's a little more "down to earth" than the multi-platform stuff.
by shifty
Wed Jul 06, 2005 4:19 pm
Forum: PSP Development
Topic: PSPKick, drum machine for PSP released.
Replies: 4
Views: 2777

PSPKick, drum machine for PSP released.

Earlier today, FKR and I released v1.00 of our PSP drum machine, PSPKick. It's over at http://pspupdates.com It features 12 tracks, 32 steps, multiple patterns, stereo 16-bit 44.1 KHz sound, adjustable BPM, .wav file output to your memory stick, groovy graphics and is just plain fun! check out it...
by shifty
Tue Jun 28, 2005 1:32 am
Forum: PSP Development
Topic: Audio Input? and remote control
Replies: 0
Views: 1390

Audio Input? and remote control

Has anyone got any progress toward getting audio input
working?

and I've seen some people have the remote pinout/signals,
but has anyone gotten homebrew software to respond to the
remote?
by shifty
Thu Jun 23, 2005 6:27 pm
Forum: PSP Development
Topic: PSP Media Center and decoder library ports
Replies: 45
Views: 47360

mp3 playback library release

hiya Warren, can you inform how much modification the tremor library was? I'd love to have a two-stream mp3 dj'ing application for PSP, so if you would post your tremor port source, it would rule... unless it was trivial, then i'll just do it myself. i dig the way you released the % file! I dig it b...
by shifty
Thu Jun 23, 2005 3:11 pm
Forum: PSP Development
Topic: KXploit for PSP 1.5
Replies: 18
Views: 11588

kxploit for mac os x

Oh, thank you Killer-X and friends for your excellent Kxploit. And I'm glad to see the linux version, too... as a developer, could I persuade you by telling you of the lovely software I'd like to write, to compile a version of kxploit for mac os x? I've already got the hello world and OldSkOOl demos...