Search found 90 matches

by foobat
Sat Aug 06, 2016 11:40 pm
Forum: Sound
Topic: New Documentation: An authoritative reference on the YM2612
Replies: 831
Views: 275756

Re: New Documentation: An authoritative reference on the YM2612

I'd buy one of these if you feel like making 2 instead of 1, Sauraen. Wish I had time to assemble the kit myself, but alas. Hit me up if you feel like making another. I'm flexible on the price.

(serious offer btw, I'm fully aware of how much time and effort goes into a project like this)
by foobat
Sat Apr 30, 2016 7:04 am
Forum: Sound
Topic: Dual-YM2612 hardware synthesizer
Replies: 52
Views: 16055

Re: Dual-YM2612 hardware synthesizer

1) I have no idea what those 12k and 220k resistors are for. I suspect I didn't when I made the amplifier either. The twiddly bits don't make music come out of the scoochers if those parts are populated. ¯\_(ツ)_/¯ 2) idk, try it and report back. I think it's kind of hard to get an op amp set up to w...
by foobat
Fri Apr 22, 2016 5:15 am
Forum: Sound
Topic: Dual-YM2612 hardware synthesizer
Replies: 52
Views: 16055

Re: Dual-YM2612 hardware synthesizer

1) to keep the power source to the YM2612 and LM386es as noise-free as possible 2) yes but not the way I have it laid out (the LM317s need higher voltage to be stable). You will get switching noise when you manipulate the data bus and change pin states on the Teensy if you do that, and it can't be e...
by foobat
Fri Jul 10, 2015 7:38 pm
Forum: Sound
Topic: Dual-YM2612 hardware synthesizer
Replies: 52
Views: 16055

oh awesome dude

I still haven't had time to do *anything* since we last talked via email. One of these days...
by foobat
Sun Apr 12, 2015 1:30 pm
Forum: Sound
Topic: Dual-YM2612 hardware synthesizer
Replies: 52
Views: 16055

Oh yeah if the eeprom doesn't have any voices in it it'll do that Uncomment the //flashEEPROM() line in setup() and start up the device with it plugged into the USB port. Then you should be able to run tserial.py. Afterwards, re-comment the flashEEPROM() line. tserial.py looks for the "eeprom.pak" f...
by foobat
Sun Feb 01, 2015 12:51 am
Forum: Sound
Topic: Dual-YM2612 hardware synthesizer
Replies: 52
Views: 16055

Good projects never die, they just fade away. Aly pinged me about it a couple times and I didn't answer because I feel bad for being so busy with work :( The hardware is basically complete, there are minor issues but nothing major. All that is really left to do is put some finishing touches on the s...
by foobat
Sat Jan 10, 2015 12:49 am
Forum: Blabla
Topic: FYI: Japanese game history book blacklisted by media
Replies: 4
Views: 1530

This book is massive. I was expecting it to be more of a light read / coffee table conversation piece style thing with a lot of art and design drawings like Sega Genesis/Megadrive Collected Works. Instead it's a big crunchy compilation of interviews, anecdotes, and history and it's serious reading. ...
by foobat
Fri Dec 19, 2014 3:11 am
Forum: Blabla
Topic: FYI: Japanese game history book blacklisted by media
Replies: 4
Views: 1530

Just got it! It's... big! Will take me awhile to read through it.
by foobat
Mon Dec 15, 2014 4:46 am
Forum: Blabla
Topic: FYI: Japanese game history book blacklisted by media
Replies: 4
Views: 1530

FYI: Japanese game history book blacklisted by media

I don't want to bring any politics into here so I won't discuss the background story, but this book looks really good and has tons of interviews with oldschool Japanese developers. The Untold History of Japanese Game Developers is up on Amazon. I ordered it and I should get it next week, I'll take s...
by foobat
Mon Dec 01, 2014 10:58 am
Forum: Megadrive/Genesis
Topic: Sega Mega Drive/Genesis Collected Works
Replies: 18
Views: 5302

Got mine too, I haven't really sat down with it yet. Looks ok
by foobat
Wed Jul 09, 2014 5:54 am
Forum: Megadrive/Genesis
Topic: 680x0 board with switch back to 68k
Replies: 10
Views: 1964

That doesn't sound very appealing. The 68010 is not significantly more interesting than the 68k and it's not really faster.
by foobat
Sun Jul 06, 2014 7:47 am
Forum: Blabla
Topic: WIP - VGM player in JavaScript
Replies: 5
Views: 2403

damn that is pretty crazy
by foobat
Sun Jul 06, 2014 1:31 am
Forum: Sound
Topic: [YM2612] Double-checking latching FNUM MSB
Replies: 2
Views: 1272

On actual hardware, if one channel's MSB is latched but another channel latches its MSB before the first one can finish setting its FNUM, what is the resulting behavior? That question is a little off - there's no way to do two things at the same time with the ym2612, so it doesn't actually matter w...
by foobat
Sun Jun 22, 2014 10:34 am
Forum: Hardware
Topic: Check my ac adaptor
Replies: 5
Views: 2672

The only way to check to see if they can provide the rated current is to connect them to the rated load. The tool to do this is called a "dummy load" or sometimes (paradoxically) a "load generator". It's effectively a series of resistors, and that's basically the same thing as an electric heater. Yo...
by foobat
Fri May 16, 2014 6:28 am
Forum: Megadrive/Genesis
Topic: Sega Mega Drive/Genesis Collected Works
Replies: 18
Views: 5302

Thanks for the heads' up! I totally preordered