Search found 699 matches

by HardWareMan
Fri Jul 07, 2017 4:29 am
Forum: Blabla
Topic: FPGA 5V
Replies: 9
Views: 616

Re: FPGA 5V

Exactly.
by HardWareMan
Mon Jul 03, 2017 5:16 am
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 27027

Re: HDD (or flash) instead of a CD, questions...

so bad the 16channels costs 3x the 8channels version It is because 8x is only simple Cypress controller and it support only 24MS/s. 16x contain FPGA and can up to 100MS/s with 1 channel. So it is still cheaper than other LAs. I bought for $37 (more than year ago) . The cheapest LA in 16ch streaming...
by HardWareMan
Mon Jul 03, 2017 5:04 am
Forum: Hardware
Topic: DIY controller not possible with AVR ?
Replies: 7
Views: 447

Re: DIY controller not possible with AVR ?

Agree with Chilly Willy.
by HardWareMan
Fri Jun 30, 2017 10:11 am
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 27027

Re: HDD (or flash) instead of a CD, questions...

What do you want to get?
by HardWareMan
Fri Jun 30, 2017 3:07 am
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 27027

Re: HDD (or flash) instead of a CD, questions...

SCOR tells the host a new frame began and that the following frame will be the the first bit of P-W Yes. That is exactly what I trying to say, but from the viewpoint of probable realization in the hardware. In those days no one was to want to complicate any of IC part, because of many reasons, some...
by HardWareMan
Thu Jun 29, 2017 3:03 pm
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 27027

Re: HDD (or flash) instead of a CD, questions...

To be honest, i know the answer was on this picture...but I was unable to read it correctly :( but still, if it read 2 frames (to get S0 & S1), it should mean SCOR should be set for 2 frames no ? I understand you. But the only way to find sync is get to subcode bytes with some unique states. So to ...
by HardWareMan
Thu Jun 29, 2017 2:51 pm
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 27027

Re: HDD (or flash) instead of a CD, questions...

KanedaFr wrote:
HardWareMan wrote:SCOR period: 1/75 sec.
which prove MCD is 1x CD drive

and you do understand why I wanted to check fi SCOR was in sync with IRQ which 1/75sec too
Yes, but nIRQ is not 1/75. It is most like 1/150.
by HardWareMan
Thu Jun 29, 2017 2:47 pm
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 27027

Re: HDD (or flash) instead of a CD, questions...

THANKS !!! awesome !!! You're welcome. so, for me, the only question still here (for now) is why SCOR is only 1 frame and not 2 like it should be : A sector is 98 frames, with 2 frames for S0/S1 synchronisation word and 96 frames for subcode = 96bit for P, 96bit for Q,...... so where is the second ...
by HardWareMan
Thu Jun 29, 2017 2:32 pm
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 27027

Re: HDD (or flash) instead of a CD, questions...

Like I said, I'd like to confirm if there is any link between comm, sub and data....or they're totally independant so could you measure IRQ / WFCK / LRCK on the same timing ? Here we come. Power up and boot Earthworm Jim CD: http://savepic.ru/14649417m.png Some closeups with nIRQ is active: http://...
by HardWareMan
Thu Jun 29, 2017 2:08 pm
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 27027

Re: HDD (or flash) instead of a CD, questions...

OK. I think we can do first approach to make FLASH player of CD image. The only thing is still undiscovered is set of commands and statuses on control 4 bit bus.
by HardWareMan
Thu Jun 29, 2017 12:19 pm
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 27027

Re: HDD (or flash) instead of a CD, questions...

I've got it. The CD track is kind of tape with 74/80/99 minutes of play, digitally. So, when it carries an audio data, there no need a perfect sync, so rough time coordinate is M:S:F format in subchannel. When they turn the audio CD to the data CD, there must be more accurate sync to the "tape". So,...
by HardWareMan
Thu Jun 29, 2017 12:05 pm
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 27027

Re: HDD (or flash) instead of a CD, questions...

Anyway, what about capture data?
by HardWareMan
Thu Jun 29, 2017 11:41 am
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 27027

Re: HDD (or flash) instead of a CD, questions...

I forgot control channel. Here is power up: http://savepic.ru/14634000m.png Little bit closer at reset: http://savepic.ru/14614544.png http://savepic.ru/14634003m.png http://savepic.ru/14662674m.png Shortest nIRQ period is 6.334 ms. http://savepic.ru/14674965m.png The rest periods seems to be multip...
by HardWareMan
Thu Jun 29, 2017 10:34 am
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 27027

Re: HDD (or flash) instead of a CD, questions...

Same here (no audio disk -> audio disk load -> audio disc play): http://savepic.ru/14651418m.png A little bit closer while playing: http://savepic.ru/14623744m.png SCOR period: 1/75 sec. SCOR pulse is right one WFCK clock period. EXCK/SBSO active only when WFCK is low and they push only 8 bits at on...
by HardWareMan
Thu Jun 29, 2017 10:11 am
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 27027

Re: HDD (or flash) instead of a CD, questions...

First approach: http://savepic.ru/14642189.png BCLK = 16MHz / 8. Yes, audio bit clock is 2.1168MHz (16.9344 / 8). 2 116 800 Hz / 48 = 44 100 Hz. Audio CD loading and then playback it: http://savepic.ru/14635020m.png Note that some data is break thru to the DAC, but Mute not allow them to output. I t...