Covox Sound Master Reverse Engineering / Replica

Discussion about old sound cards, MIDI devices and sound related accessories.

Re: Covox Sound Master Reverse Engineering / Replica

Postby Yvan256 » 2014-9-03 @ 13:53

awgamer wrote:If your card is still working, it would seem to follow it has retained the data.


I don't know if it's still working, but I do have a Tandy 1000 RLX, so I could test it with Ultima VI.

Unfortunately I'm busy with two other projects right now. I'll try to find a flatbed scanner to scan both sides of the card.
Yvan256
Newbie
 
Posts: 24
Joined: 2007-3-09 @ 15:48

Re: Covox Sound Master Reverse Engineering / Replica

Postby carlostex » 2014-9-03 @ 18:04

It would be nice to have some high resolution pictures of the card for starters. Because there are none on the web right now.
User avatar
carlostex
l33t
 
Posts: 2100
Joined: 2010-4-03 @ 21:39
Location: Portugal

Re: Covox Sound Master Reverse Engineering / Replica

Postby Yvan256 » 2014-9-03 @ 19:40

carlostex wrote:It would be nice to have some high resolution pictures of the card for starters. Because there are none on the web right now.


The only thing I have is an old iPhone 3GS, I'm not sure that would qualify as high resolution pictures.
Yvan256
Newbie
 
Posts: 24
Joined: 2007-3-09 @ 15:48

Re: Covox Sound Master Reverse Engineering / Replica

Postby carlostex » 2014-9-03 @ 20:28

Probably not but certainly it would be much better than what's available on the web right now.
User avatar
carlostex
l33t
 
Posts: 2100
Joined: 2010-4-03 @ 21:39
Location: Portugal

Re: Covox Sound Master Reverse Engineering / Replica

Postby carlostex » 2014-10-14 @ 10:16

@Vetz

Have you received the AY-8930 chips you ordered?
User avatar
carlostex
l33t
 
Posts: 2100
Joined: 2010-4-03 @ 21:39
Location: Portugal

Re: Covox Sound Master Reverse Engineering / Replica

Postby vetz » 2014-10-14 @ 10:35

carlostex wrote:@Vetz

Have you received the AY-8930 chips you ordered?


Sent from China 12th of October. I have the tracking number. I should have them in approx 1 week.
User avatar
vetz
Hardware Mod
 
Posts: 3284
Joined: 2012-4-23 @ 17:13

Re: Covox Sound Master Reverse Engineering / Replica

Postby carlostex » 2014-10-15 @ 12:08

vetz wrote:
Sent from China 12th of October. I have the tracking number. I should have them in approx 1 week.


Great keep us updated!!
User avatar
carlostex
l33t
 
Posts: 2100
Joined: 2010-4-03 @ 21:39
Location: Portugal

Re: Covox Sound Master Reverse Engineering / Replica

Postby vetz » 2014-10-16 @ 08:07

Arrived to the domestic terminal. Should have it on Saturday. I'll take some closeups and post here. Then you guys can have a look and tell me if they are usable for this project.

I did order a couple of other things in this package (ASUS AV264+ 4MB, AWE32 CT3900, etc) and I held back on shipment to send it all in one package, so that is the reason for the long delivery time.
User avatar
vetz
Hardware Mod
 
Posts: 3284
Joined: 2012-4-23 @ 17:13


Re: Covox Sound Master Reverse Engineering / Replica

Postby vetz » 2014-10-19 @ 20:12

No response I see.

Do they look OK compared to the originals? Are they "promising" enough for me to send them on?
User avatar
vetz
Hardware Mod
 
Posts: 3284
Joined: 2012-4-23 @ 17:13

Re: Covox Sound Master Reverse Engineering / Replica

Postby keropi » 2014-10-19 @ 21:00

well, they are AY8930 , since on the 1st page here someone is reporting that this is indeed the sound chip I don't see anything wrong with them...
User avatar
keropi
l33t++
 
Posts: 7251
Joined: 2003-9-08 @ 06:45
Location: Greece

Re: Covox Sound Master Reverse Engineering / Replica

Postby carlostex » 2014-10-19 @ 22:46

I asked Yvan to post a proper photo of the Covox Sound Master. But i'm sure it does use a AY-8930.

Those clones should be the same as the AY8930's on Covox cards, its actually probably that Covox used AY8930's from different manufacturers.

So yes they are "promising" enough. Are you going to send them to Yvan?
User avatar
carlostex
l33t
 
Posts: 2100
Joined: 2010-4-03 @ 21:39
Location: Portugal

Re: Covox Sound Master Reverse Engineering / Replica

Postby vetz » 2014-10-19 @ 22:50

carlostex wrote:I asked Yvan to post a proper photo of the Covox Sound Master. But i'm sure it does use a AY-8930.

Those clones should be the same as the AY8930's on Covox cards, its actually probably that Covox used AY8930's from different manufacturers.

So yes they are "promising" enough. Are you going to send them to Yvan?


Good to hear. Yes, I'll send them on if he gives me his address :)
User avatar
vetz
Hardware Mod
 
Posts: 3284
Joined: 2012-4-23 @ 17:13

Re: Covox Sound Master Reverse Engineering / Replica

Postby Yvan256 » 2014-10-19 @ 23:56

Covox Sound Master AY8930 closeup.jpeg
Covox Sound Master, close-up of the AY8930 IC
Covox Sound Master AY8930 closeup.jpeg (159.47 KiB) Viewed 1035 times
Yvan256
Newbie
 
Posts: 24
Joined: 2007-3-09 @ 15:48

Re: Covox Sound Master Reverse Engineering / Replica

Postby keropi » 2014-10-19 @ 23:59

vetz's chips are no clones, they are the real deal
and Yvan256's picture confirms that they will work just fine
User avatar
keropi
l33t++
 
Posts: 7251
Joined: 2003-9-08 @ 06:45
Location: Greece

Re: Covox Sound Master Reverse Engineering / Replica

Postby Yvan256 » 2014-10-20 @ 00:03

vetz wrote:
carlostex wrote:I asked Yvan to post a proper photo of the Covox Sound Master. But i'm sure it does use a AY-8930.

Those clones should be the same as the AY8930's on Covox cards, its actually probably that Covox used AY8930's from different manufacturers.

So yes they are "promising" enough. Are you going to send them to Yvan?


Good to hear. Yes, I'll send them on if he gives me his address :)


Would it be possible to send me the first one at the top of your photo? I can't remember if I'm getting one IC, two, three...?
Last edited by Yvan256 on 2014-10-20 @ 00:04, edited 1 time in total.
Yvan256
Newbie
 
Posts: 24
Joined: 2007-3-09 @ 15:48

Re: Covox Sound Master Reverse Engineering / Replica

Postby carlostex » 2014-10-20 @ 00:03

Awesome!!

@Keropi

Yep. Hopefully Yvan can trace the card and do some prototyping.

@Yvan

I thought he was gonna send you all five...
User avatar
carlostex
l33t
 
Posts: 2100
Joined: 2010-4-03 @ 21:39
Location: Portugal

Re: Covox Sound Master Reverse Engineering / Replica

Postby Yvan256 » 2014-10-20 @ 00:12

carlostex wrote:Awesome!!

@Keropi

Yep. Hopefully Yvan can trace the card and do some prototyping.

@Yvan

I thought he was gonna send you all five...


Possible... I'm juggling around six or seven projects right now, it's a bit hard to keep track of all the details. :dead:

I'll even need to make a sub-project to try and see how the GAL16V8-25LNC is programmed. I may be able to know which pins are used as inputs and outputs depending on where they're connected, maybe some lines are hard-wired to VCC or GND, etc. Hey, it's 20-years-old tech, how hard could it be? :wink:
Yvan256
Newbie
 
Posts: 24
Joined: 2007-3-09 @ 15:48

Re: Covox Sound Master Reverse Engineering / Replica

Postby carlostex » 2014-10-20 @ 00:19

Nice. What would be the priority to replicate this card?

I would image it is to trace the card and build a scheme.

Do something like this maybe:

Image
User avatar
carlostex
l33t
 
Posts: 2100
Joined: 2010-4-03 @ 21:39
Location: Portugal

Re: Covox Sound Master Reverse Engineering / Replica

Postby vetz » 2014-10-20 @ 08:43

carlostex wrote:Awesome!!

@Keropi

Yep. Hopefully Yvan can trace the card and do some prototyping.

@Yvan

I thought he was gonna send you all five...


Yes, I'll send him all five :) If this project sees a working product in the end one of the chips will go into my card I guess :)
User avatar
vetz
Hardware Mod
 
Posts: 3284
Joined: 2012-4-23 @ 17:13

PreviousNext

Return to Sound

Who is online

Users browsing this forum: No registered users and 2 guests