SB 2.0 CT1350 CMS chips dumped

Announcements, advice, random banter, unrelated discussion, et cetera.

SB 2.0 CT1350 CMS chips dumped

Postby DonutKing » 2011-10-26 @ 00:29

as many of you already know, the SB 2.0 requires 3 chips to enable Game Blaster/CMS compatibility. Two Phillips SAA1099 which are pretty easy to find, and one PAL chip that is Creative proprietary.

Chuck(G) over at vintage computer has managed to dump the contents of the missing chip.

http://www.vintage-computer.com/vcforum ... AL-Part-11

CHIP SB20 16V8

pin1=1 pin2=2 pin3=3 pin4=4 pin5=5 pin6=6 pin7=7 pin8=8 pin9=9 gnd=10
pin11=11 pin12=12 pin13=13 pin14=14 pin15=15 pin16=16 pin17=17
pin18=18 pin19=19 vcc=20

EQUATIONS

; pin12 = nc
; note that pin 7 8 and 9 are tied to gnd on the PAL socket

pin13.trst = /pin4
pin13 = pin7 ; IO CH RDY/ tristated
/pin14 = pin11*pin3*/pin2 ; CS/ for YM3812
/pin15 = /pin5*/pin3*/pin2 ; CS/ for first SAA1099P
/pin16 = /pin5*/pin3*/pin1 ; CS/ for second SAA1099P
/pin17 = /pin11 + /pin6 ; U14, 74LS74, PS2
/pin18 = /pin5*/pin3*/pin1 + /pin5*/pin3*/pin2 ; U14, D2
/pin19 = pin5 ; U14, CLK2


If you run this through EQN2JED then burn a GAL16v8 in an appropriate programmer you should be able to get the CMS upgrade working.
User avatar
DonutKing
Oldbie
 
Posts: 1783
Joined: 2008-1-03 @ 03:23
Location: Australia

Re: SB 2.0 CT1350 CMS chips dumped

Postby Mau1wurf1977 » 2011-10-26 @ 03:13

Very nice!

Now we just need to find someone capable of producing enough for the retro community :)
User avatar
Mau1wurf1977
l33t++
 
Posts: 7652
Joined: 2010-8-27 @ 04:15
Location: Western Australia

Re: SB 2.0 CT1350 CMS chips dumped

Postby Anonymous Coward » 2011-10-26 @ 03:17

Wow. Great news.
Will the highways on the internets become more few?
V'Ger XT|Upgraded AT|Ultimate 386|Super VL/EISA 486|SMP VL/EISA Pentium
User avatar
Anonymous Coward
l33t
 
Posts: 2746
Joined: 2008-3-20 @ 05:37
Location: Shandong, China

Re: SB 2.0 CT1350 CMS chips dumped

Postby Mau1wurf1977 » 2011-10-26 @ 03:20

I have 4x SB 2.0 cards which would love an upgrade...
User avatar
Mau1wurf1977
l33t++
 
Posts: 7652
Joined: 2010-8-27 @ 04:15
Location: Western Australia

Re: SB 2.0 CT1350 CMS chips dumped

Postby DonutKing » 2011-10-26 @ 03:33

Well you can get a cheap programmer off ebay that will do the job - search for G540 or TOP853, both are USB and work with Windows and can be had for $50 AUD delivered. I'm not sure which one is better.

If someone can recommend one or the other, or a better programmer in a similar price range, please share your knowledge :)

You can buy the GAL16v8 chips from here http://www.futurlec.com/ICPAL.shtml

I've been thinking of buying a programmer and some GALs for an Amiga Phoenix 1000 board I've been working on.... this gives me another really good reason to do it :) I've also got 2x CT1350 cards that could use this.
User avatar
DonutKing
Oldbie
 
Posts: 1783
Joined: 2008-1-03 @ 03:23
Location: Australia

Re: SB 2.0 CT1350 CMS chips dumped

Postby Mau1wurf1977 » 2011-10-26 @ 03:44

A bargain considering you couldn't even buy a 2.0 upgrade kit before :)
User avatar
Mau1wurf1977
l33t++
 
Posts: 7652
Joined: 2010-8-27 @ 04:15
Location: Western Australia

Re: SB 2.0 CT1350 CMS chips dumped

Postby keropi » 2011-10-26 @ 06:29

so, where is the chip's program to dl? or is it a secret?
User avatar
keropi
l33t++
 
Posts: 6340
Joined: 2003-9-08 @ 06:45
Location: Greece

Re: SB 2.0 CT1350 CMS chips dumped

Postby DonutKing » 2011-10-26 @ 06:42

It's quoted in my post.... you gotta save the quoted text as an EQN file, and run it through EQN2JED.exe which can be found via google.



If that's too much effort here's one I prepared earlier
http://dl.dropbox.com/u/9151127/SB2CMS.JED

I don't have a programmer so I haven't tried it.
User avatar
DonutKing
Oldbie
 
Posts: 1783
Joined: 2008-1-03 @ 03:23
Location: Australia

Re: SB 2.0 CT1350 CMS chips dumped

Postby keropi » 2011-10-26 @ 09:59

that's the whole program? just a few lines? LOL
I thought it would be more...
thanks DonutKing , I'll burn a chip at some point to test :D
User avatar
keropi
l33t++
 
Posts: 6340
Joined: 2003-9-08 @ 06:45
Location: Greece

Re: SB 2.0 CT1350 CMS chips dumped

Postby DonutKing » 2011-10-26 @ 10:09

If you have a read of the article at vintage computer you can see that its mainly pretty simple logic. Not like an EPROM with kilobytes of binary code :)
If you are squeamish, don't prod the beach rubble.
User avatar
DonutKing
Oldbie
 
Posts: 1783
Joined: 2008-1-03 @ 03:23
Location: Australia

Re: SB 2.0 CT1350 CMS chips dumped

Postby keropi » 2011-10-26 @ 13:00

truth be told I am saving the reading for home... I am at the office currently with lots of stuff going on LOL
User avatar
keropi
l33t++
 
Posts: 6340
Joined: 2003-9-08 @ 06:45
Location: Greece

Re: SB 2.0 CT1350 CMS chips dumped

Postby Robin4 » 2011-10-30 @ 11:54

somebody has progress on this?
~ At least it can do black and white~
User avatar
Robin4
Oldbie
 
Posts: 1946
Joined: 2011-4-04 @ 09:52
Location: THE NETHERLANDS

Re: SB 2.0 CT1350 CMS chips dumped

Postby DonutKing » 2011-11-22 @ 01:57

CONFIRMED WORKING!

My programmer and some GAL chips arrived today, so I got busy and programmed the JED file onto a couple of GAL16V8D chips, then stuck them and two SAA1099 chips into both of my Sound Blaster 2.0's :)

Image

You do require the CMS driver here: http://cloudschatze.googlepages.com/CMSDRV.com which isn't included in the Creative downloadable driver pack, but once that's done the CMS support is functional. Tested Loom and Monkey Island 1 so far, works perfectly, although the sound seems a lot more filtered and nowhere near as loud, as a real CMS/Game Blaster.
If you are squeamish, don't prod the beach rubble.
User avatar
DonutKing
Oldbie
 
Posts: 1783
Joined: 2008-1-03 @ 03:23
Location: Australia

Re: SB 2.0 CT1350 CMS chips dumped

Postby Mau1wurf1977 » 2011-11-22 @ 06:09

Time for some recordings!

I don't think there are ANY SB 2.0 + CMS recordings out and about. Its quite possible that it sounds different to a real Game Blaster or a 1.5 + CMS.

I believe the 2.0 is more filtered compared to a 1.5 in general.

My 1.5 recordings are on YouTube if you want to compare them.
User avatar
Mau1wurf1977
l33t++
 
Posts: 7652
Joined: 2010-8-27 @ 04:15
Location: Western Australia

Re: SB 2.0 CT1350 CMS chips dumped

Postby Robin4 » 2012-1-05 @ 12:25

DonutKing wrote:CONFIRMED WORKING!

My programmer and some GAL chips arrived today, so I got busy and programmed the JED file onto a couple of GAL16V8D chips, then stuck them and two SAA1099 chips into both of my Sound Blaster 2.0's :)

Image

You do require the CMS driver here: http://cloudschatze.googlepages.com/CMSDRV.com which isn't included in the Creative downloadable driver pack, but once that's done the CMS support is functional. Tested Loom and Monkey Island 1 so far, works perfectly, although the sound seems a lot more filtered and nowhere near as loud, as a real CMS/Game Blaster.


I have installed my GAL also. Arent there any test programs for testing that Game blaster part?
~ At least it can do black and white~
User avatar
Robin4
Oldbie
 
Posts: 1946
Joined: 2011-4-04 @ 09:52
Location: THE NETHERLANDS

Re: SB 2.0 CT1350 CMS chips dumped

Postby DonutKing » 2012-1-05 @ 12:58

I just run monkey island or LOOM in game blaster mode.
If you are squeamish, don't prod the beach rubble.
User avatar
DonutKing
Oldbie
 
Posts: 1783
Joined: 2008-1-03 @ 03:23
Location: Australia

Re: SB 2.0 CT1350 CMS chips dumped

Postby keropi » 2012-1-05 @ 15:14

you can also use Paku Paku to test CMS :D

http://www.deathshadow.com/pakuPaku
User avatar
keropi
l33t++
 
Posts: 6340
Joined: 2003-9-08 @ 06:45
Location: Greece

Re: SB 2.0 CT1350 CMS chips dumped

Postby Mau1wurf1977 » 2012-1-05 @ 19:09

Would love some CM recordings off a 2.0 card...

I still haven't gotten around to doing this upgrade. The two Philips chips have also became dearer...
User avatar
Mau1wurf1977
l33t++
 
Posts: 7652
Joined: 2010-8-27 @ 04:15
Location: Western Australia

Re: SB 2.0 CT1350 CMS chips dumped

Postby DonutKing » 2012-1-07 @ 05:28

Here you go then:

Monkey Island on a SB 2.0 CT1350 with CMS upgrade:
http://dl.dropbox.com/u/9151127/mi1%20ct1350.mp3

Monkey Island on a Game Blaster CT1300:
http://dl.dropbox.com/u/9151127/mi1%20g ... laster.mp3


To be honest I can't really hear a difference between the two recordings except the SB2.0 is a bit nosier with some background hiss/crackle. That's probably due to the digital output picking up some interference from inside the case, which the game blaster is immune to since it doesn't have digital output. I did perform a noise removal on both tracks in Audacity.

I can't replicate my earlier result, where I claimed the SB2.0 was more filtered/softer, perhaps it was the speakers/headphones I was using at the time.
If you are squeamish, don't prod the beach rubble.
User avatar
DonutKing
Oldbie
 
Posts: 1783
Joined: 2008-1-03 @ 03:23
Location: Australia

Re: SB 2.0 CT1350 CMS chips dumped

Postby Mau1wurf1977 » 2012-1-07 @ 06:25

Yea I can't tell any difference either...

I looked at the frequency spectrum and no sign of any filter...

Thanks for the recordings!

Funny how this SB 2.0 CMS project has finally come to an end. For years people have speculated and wished to duplicate this chip and now it's done...
User avatar
Mau1wurf1977
l33t++
 
Posts: 7652
Joined: 2010-8-27 @ 04:15
Location: Western Australia

Next

Return to Milliways

Who is online

Users browsing this forum: Google [Bot] and 4 guests

cron