Search found 704 matches

by HardWareMan
Sat Jul 29, 2017 4:37 am
Forum: Cartridge
Topic: How does work SRAM on everdrive?
Replies: 20
Views: 1631

Re: How does work SRAM on everdrive?

$1B0 - 'R' $1B1 - 'A' $1B2 : ___ D7 always 1, ___ D6 - 1 = RAM don't destroy after power off, ___ D5 - always 1, ___ D4:D3 - 00 = word sized RAM (D0-D15), 01 = not used, 10 = even byte RAM (D8-D15), 11 = odd byte RAM (D0-D7), ___ D2:D0 - always 000. $1B3 - ' ' (0x20) $1B4 - dword, start address of ...
by HardWareMan
Fri Jul 21, 2017 6:05 pm
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 30742

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

Oh, so... OK, I can try this at home. :)
by HardWareMan
Fri Jul 21, 2017 3:46 am
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 30742

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

KanedaFr wrote:
Fri Jul 21, 2017 2:00 am
I was waiting for your proto ;)
Like this?
KanedaFr wrote:
Sun Jul 02, 2017 10:16 pm
nothing, only wanted to know if the I2S was as great as it seems (with sound save) ;)
I could not get him to decode I2S as a sound. Only as data.
by HardWareMan
Thu Jul 20, 2017 3:37 pm
Forum: Hardware
Topic: HDD (or flash) instead of a CD, questions...
Replies: 140
Views: 30742

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

It's quiet down here. Too quiet.
by HardWareMan
Sun Jul 16, 2017 12:26 pm
Forum: Megadrive/Genesis
Topic: Super Magic Drive research thread
Replies: 133
Views: 47302

Re: Super Magic Drive research thread

This is normal practice. This table can be used by downloadable software. And these vectors will always be true, even if the system software is updated.
by HardWareMan
Fri Jul 07, 2017 4:29 am
Forum: Blabla
Topic: FPGA 5V
Replies: 9
Views: 1172

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: 30742

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: 776

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: 30742

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: 30742

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: 30742

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: 30742

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: 30742

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: 30742

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: 30742

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.