Chip16 Official thread (Development/Suggestions) - Page 8

4p3r0 · February 27th, 2012, 10:08

Quote:

Originally Posted by tykel

So your 0xFFF0 is not getting updated? How did other ROMs using the controller work then?

Thanks!

Maybe the bug is in some other place, because all other ROMs are working fine. I just noticed that my VBlank and fps handling is a mess, so I'll try to rewrite this part, in the hope that it will fix that bug

**refraction** · February 27th, 2012, 11:05

Sorry I hadn't updated my emulator yet, I wasn't touching it till there was a sound demo available for testing

. But I can make a start on implementing them if you like?

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tykel · February 27th, 2012, 11:32

Quote:

Originally Posted by refraction

Sorry I hadn't updated my emulator yet, I wasn't touching it till there was a sound demo available for testing

. But I can make a start on implementing them if you like?

Yeah, the more the merrier!

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**refraction** · February 27th, 2012, 11:39

Quote:

Originally Posted by tykel

Yeah, the more the merrier!

Cool, now i have to swat up on audio generation and adsr dsp control, any cool docs/links would be appreciated

Edit: nevermind, sounds easy enough and have a Microsoft link on sound generation

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Last edited by refraction; February 27th, 2012 at 14:47..

LoRd_SnOw · February 27th, 2012, 20:28

Sorry, I have not been following this for a few months. The spec sheet on the front page are these the latest changes? are more changes expected to come? if so, what other changes will be added.

I'm looking to rewrite my chip-16 emulator because of some problems I haven't been able to fix. Originally, I intended to fix the problems i'm facing first and then work on the new spec but it's taking far too long to point out what the problem actually is, so I think it may be best to rewrite it again from scratch.

Thanks.

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paul_nicholls · February 27th, 2012, 21:27

Quote:

Originally Posted by refraction

Cool, now i have to swat up on audio generation and adsr dsp control, any cool docs/links would be appreciated

Edit: nevermind, sounds easy enough and have a Microsoft link on sound generation

Hi refraction, If you hadn't seen it previously, I had posted a demo sound program (including source code) that does ADSR sound generation and was made to test sounds for the new Chip-16 sound specs

cheers,
Paul

tykel · February 27th, 2012, 21:45

Quote:

Originally Posted by LoRd_SnOw

Sorry, I have not been following this for a few months. The spec sheet on the front page are these the latest changes? are more changes expected to come? if so, what other changes will be added.

I'm looking to rewrite my chip-16 emulator because of some problems I haven't been able to fix. Originally, I intended to fix the problems i'm facing first and then work on the new spec but it's taking far too long to point out what the problem actually is, so I think it may be best to rewrite it again from scratch.

Thanks.

Let this be clear: the spec IS fixed and up-to-date on the front page, and will NOT be modified further for the foreseeable future. There is no point in endlessly amending with things we might like, if they are not used and implemented.

So I repeat: YES, the spec is up-to-date, and NO, it will not change soon.

As always, I invite you all to write demos and games

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**refraction** · February 28th, 2012, 09:24

Quote:

Originally Posted by paul_nicholls

Hi refraction, If you hadn't seen it previously, I had posted a demo sound program (including source code) that does ADSR sound generation and was made to test sounds for the new Chip-16 sound specs

cheers,
Paul

Hi Paul, i did see, then forgot, but thank you for that! I will be sure to use it in my tests

i will be using your ADSR settings that you have used here http://forums.ngemu.com/showpost.php...0&postcount=84 , we should probably include these in the spec.

Edit: Oh talking about the spec not changing, SPU (overview) is in there twice, one with t he new spec, one with the old, should probably remove the old one ;p

Edit 2:

Can you also update the link to my emulator to this post? http://forums.ngemu.com/showpost.php...9&postcount=50

That one has a dynarec in too, so people can see how to make one of them ;p

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Last edited by refraction; February 28th, 2012 at 16:10..

tykel · February 29th, 2012, 00:07

Quote:

Originally Posted by refraction

Hi Paul, i did see, then forgot, but thank you for that! I will be sure to use it in my tests

i will be using your ADSR settings that you have used here http://forums.ngemu.com/showpost.php...0&postcount=84 , we should probably include these in the spec.

Edit: Oh talking about the spec not changing, SPU (overview) is in there twice, one with t he new spec, one with the old, should probably remove the old one ;p

Edit 2:

Can you also update the link to my emulator to this post? http://forums.ngemu.com/showpost.php...9&postcount=50

That one has a dynarec in too, so people can see how to make one of them ;p

Added your updated emulator link to OP, sorry I didn't see that!

About the SPU... the old instructions are still there for two reasons:
- backwards compatibility
- alternative methods for generating sound
although it is mainly the first reason, I must say.

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**refraction** · February 29th, 2012, 08:04

No no I mean the spec has

Quote:

SPU:
-----
Two options are available:
- Playing one of 3 fixed tones (500 Hz, 1000 Hz, 1500 Hz) for a given number of milliseconds, OR
- Using sound generation options (SNG instruction), play a tone from memory for a given number of milliseconds.

Sound generator options are detailed in the SNG opcode description.

-----------------------Colour stuff in here---------------------------

SPU:
-----
500Hz, 1000Hz and 1500Hz sine wave tone generator.

. Nearly done on my sound processing, just adding the pal opcodes and header support then ill need to write some tests..

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Last edited by refraction; February 29th, 2012 at 09:35.. Reason: changing blahblah's for real stuff

tykel · February 29th, 2012, 10:21

Quote:

Originally Posted by refraction

No no I mean the spec has

. Nearly done on my sound processing, just adding the pal opcodes and header support then ill need to write some tests..

Good point, fixed now. Cheers for that

Looking forward to checking yours out!

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paul_nicholls · February 29th, 2012, 10:31

And I really should stop procrastinating, get off my ass, and try making a Chip-16 emulator myself!!

tykel · February 29th, 2012, 10:42

Quote:

Originally Posted by paul_nicholls

And I really should stop procrastinating, get off my ass, and try making a Chip-16 emulator myself!!

Reminding me of myself here :P

I would like to see that!

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**refraction** · February 29th, 2012, 10:56

Progress is slowed! i planned on writing this at work and uploading a pre-chip16 test program version so you guys get something, it will work on all current games anyways ;p But alas i send myself old code that didnt work properly >.< Hopefully ill be able to release something later, if not, tomorrow ;p

Paul: Pull your finger out! XD

Tykel: You're excused cos youve written the assembler :P

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Hatorijr · March 1st, 2012, 05:09

i have been considering writing a chip16 emulator, but i probably need to get my other 2 projects finished first lol.

i would be interested in looking at the dynarec stuff refraction made, i have always wanted to learn how to make one but finding good documentation on the subject has never been to easy to find.

Bill_gates · March 1st, 2012, 05:57

Are there any games for chip16 that take advantage of the new sound spec?

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**refraction** · March 1st, 2012, 09:27

Quote:

Originally Posted by Hatorijr

i have been considering writing a chip16 emulator, but i probably need to get my other 2 projects finished first lol.

i would be interested in looking at the dynarec stuff refraction made, i have always wanted to learn how to make one but finding good documentation on the subject has never been to easy to find.

It is difficult to get good documentation on it, ive sorta stolen a couple of bits from PCSX2's old recompiler (mainly bits of the x86 emitter), but other than that, i recommend you read this to start with, followed by this

Quote:

Originally Posted by Bill_gates

Are there any games for chip16 that take advantage of the new sound spec?

Not yet, but im thinking of throwing something together that just tests each aspect of it. Nearly done on my emu, just trying to write a Chip16 test for changing pallate (probably linked to up and down on the keypad), once thats good, ill release it

as far as i can tell my ADSR filter is working and the wave generation is working (noise even has pitch control! :P)

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paul_nicholls · March 1st, 2012, 11:29

Speaking of the noise spec, I had a question for when making a Chip-16 emulator...

When playing sounds in the emulator, should the sounds pause the 'CPU' during playing, and then resume when the sound has finished, or do they happen asynchronously, ie.not pause the CPU?

cheers,
Paul

**refraction** · March 1st, 2012, 11:47

I have it happening asynchronously i think. I generate the sound, throw it in to an xaudio voice buffer and tell it to play it, no loop checking if it's finished, so i presume it doesnt hang there :P I suspect this is how it was intended

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tykel · March 1st, 2012, 12:21

All the audio should happen asynchronously, yes. That's how the initial sound spec worked, and it makes more sense this way.

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February 27th, 2012, 11:05	#142
refraction PCSX2 Coder $refraction's Avatar$ Join Date: Jan 2004 Location: Plymouth, UK Posts: 10,037	Sorry I hadn't updated my emulator yet, I wasn't touching it till there was a sound demo available for testing . But I can make a start on implementing them if you like? __________________ http://www.pcsx2.net Intel i7 920 @ 3.4Ghz, POV GTX 570 1.3Gb, 1.8Tb HD space, 6Gb OCZ Reaper PC3-14400 Triple Channel Dont PM me for help, use the forums, thats what its for! My Chip16 Emulator RefChip16 http://code.google.com/p/refchip16/
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February 29th, 2012, 10:56	#154
refraction PCSX2 Coder $refraction's Avatar$ Join Date: Jan 2004 Location: Plymouth, UK Posts: 10,037	Progress is slowed! i planned on writing this at work and uploading a pre-chip16 test program version so you guys get something, it will work on all current games anyways ;p But alas i send myself old code that didnt work properly >.< Hopefully ill be able to release something later, if not, tomorrow ;p Paul: Pull your finger out! XD Tykel: You're excused cos youve written the assembler :P __________________ http://www.pcsx2.net Intel i7 920 @ 3.4Ghz, POV GTX 570 1.3Gb, 1.8Tb HD space, 6Gb OCZ Reaper PC3-14400 Triple Channel Dont PM me for help, use the forums, thats what its for! My Chip16 Emulator RefChip16 http://code.google.com/p/refchip16/
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March 1st, 2012, 11:47	#159
refraction PCSX2 Coder $refraction's Avatar$ Join Date: Jan 2004 Location: Plymouth, UK Posts: 10,037	I have it happening asynchronously i think. I generate the sound, throw it in to an xaudio voice buffer and tell it to play it, no loop checking if it's finished, so i presume it doesnt hang there :P I suspect this is how it was intended __________________ http://www.pcsx2.net Intel i7 920 @ 3.4Ghz, POV GTX 570 1.3Gb, 1.8Tb HD space, 6Gb OCZ Reaper PC3-14400 Triple Channel Dont PM me for help, use the forums, thats what its for! My Chip16 Emulator RefChip16 http://code.google.com/p/refchip16/
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February 27th, 2012, 20:28	#145
LoRd_SnOw Registered User Join Date: Aug 2004 Location: United States Posts: 174	Sorry, I have not been following this for a few months. The spec sheet on the front page are these the latest changes? are more changes expected to come? if so, what other changes will be added. I'm looking to rewrite my chip-16 emulator because of some problems I haven't been able to fix. Originally, I intended to fix the problems i'm facing first and then work on the new spec but it's taking far too long to point out what the problem actually is, so I think it may be best to rewrite it again from scratch. Thanks. __________________ Development Blog

February 29th, 2012, 10:31	#152
paul_nicholls Registered User Join Date: Sep 2011 Location: Australia, Tasmania Posts: 180	And I really should stop procrastinating, get off my ass, and try making a Chip-16 emulator myself!!

March 1st, 2012, 05:09	#155
Hatorijr Emu Author Join Date: Dec 2004 Location: North Carolina Posts: 599	i have been considering writing a chip16 emulator, but i probably need to get my other 2 projects finished first lol. i would be interested in looking at the dynarec stuff refraction made, i have always wanted to learn how to make one but finding good documentation on the subject has never been to easy to find.

March 1st, 2012, 05:57	#156
Bill_gates Linux's worst nightmare.. Join Date: Feb 2004 Location: USA Posts: 1,505	Are there any games for chip16 that take advantage of the new sound spec? __________________ OS: WinXP Professional Service Pack 3 CPU: Intel pentium 4 3.0GHz Video: Nvidia Geforce 8400GS Sound: ASUS Xonar DS 7.1 Channels 24-bit 192KHz PCI Interface Audio Card Memory: 512 MB HD: [C:] 140.36/449.09 GB Connection: Marvell Yukon 88E8053 PCI-E Gigabit Ethernet Controller

March 1st, 2012, 11:29	#158
paul_nicholls Registered User Join Date: Sep 2011 Location: Australia, Tasmania Posts: 180	Speaking of the noise spec, I had a question for when making a Chip-16 emulator... When playing sounds in the emulator, should the sounds pause the 'CPU' during playing, and then resume when the sound has finished, or do they happen asynchronously, ie.not pause the CPU? cheers, Paul

March 1st, 2012, 12:21	#160
tykel Sober coder Join Date: Aug 2010 Location: London, UK Posts: 433	All the audio should happen asynchronously, yes. That's how the initial sound spec worked, and it makes more sense this way. __________________ tchip16 (chip16 assembler) Js16 (browser chip16 emulator) mash16 (chip16 emulator) img16 (chip16 sprite converter) ______________________________________ Desktop: i5 750 @ 3.6 Ghz, 4GB ram, GTX 570 OC \| Windows 7 Pro 64 Laptop: (Thinkpad) i5 430M, 4GB ram, Intel IGP \| Arch Linux, Windows 7 Pro 64