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Re: Finally! CMS Upgrade Equations for All SB2.0s

Posted on 2019-04-13, 17:59

in Milliways
HanJammer wrote: JED file: https://mega.nz/#!hYEihSAY!fcyhoVGlhlSLmES_Nn … BASQydeDKQOjkh0 I will try burning GAL16V8B. The .JED file is OK. Btw, I've slightly updated the code for u5_cs and u8_cs in my first post, but that shouldn't have any effect in your case.

Re: Finally! CMS Upgrade Equations for All SB2.0s

Posted on 2019-04-13, 17:26

in Milliways
try different GAL brand. Some programmers like Lattice more than NatSemi etc, some like National.. Often trying different brand helps! (sounds crazy, but its true) The ones I have are Lattice GAL16V8-15LP... Does it matter if it's -15LP or -20LNC or -25QB1 - because those are any other I can source …

Re: Finally! CMS Upgrade Equations for All SB2.0s

Posted on 2019-04-13, 17:19

in Milliways
Apparently when I will leave it checked - programmer will no longer be able to read from the GAL (for verification etc) - when I uncheck it - it will verify the chip with no problems. The old free equations should work with all card revisions. The only problem would be with the FM and the digital …

Re: SB 2.0 CT1350 CMS chips dumped

Posted on 2019-04-11, 20:03

in Milliways
SirNickity, exactly. That's why I've put the equations into the public domain. In my equations, there is almost no room for further improvement, so why bother with licensing anyway? 😀

Re: SB 2.0 CT1350 CMS chips dumped

Posted on 2019-04-09, 23:48

in Milliways
scorp wrote: I opened my work under GPL3 on github, if somebody wants to contribute or to try it. Feel free Just copy my code. Mine is already in the public domain, yours is infected by GPL3.

Re: SB 2.0 CT1350 CMS chips dumped

Posted on 2019-04-09, 23:40

in Milliways
So does this mean that some hardware patching can be done to improve things? Yes, exactly! Toss all Sound Blasters into trash and make a new card design from scratch :D However, we still like them somehow... :lol: :lol: :lol: I was thinking something along the lines of un-grounding those SAA1099 …

Re: SB 2.0 CT1350 CMS chips dumped

Posted on 2019-04-09, 21:55

in Milliways
keropi wrote: So does this mean that some hardware patching can be done to improve things? Yes, exactly! Toss all Sound Blasters into trash and make a new card design from scratch 😁 However, we still like them somehow...

Re: SB 2.0 CT1350 CMS chips dumped

Posted on 2019-04-09, 21:49

in Milliways
WR should never be used for CS in ISA-based designs. I left it there for maximum compatibility with all SB2.0 revisions. The more I study the Sound Blaster cards, the more I am aware of their flaws.

Re: SB 2.0 CT1350 CMS chips dumped

Posted on 2019-04-09, 21:17

in Milliways
Oh, yes, sure. That was stupid from me, I overseen somehow, that you are talking about SAA1099s WR, which can be grounded. I see. It would be nice to tinker with different revisions, but, as I told, unfortunately I have only the one. It happens sometimes. I personally own only two revisions, a "Rev …

Re: SB 2.0 CT1350 CMS chips dumped

Posted on 2019-04-09, 20:49

in Milliways
That would mean, that the FlipFlop would never get its clock. Are you sure? That would mean, that your solution would also have an issue with that.... Yes, I am sure. FF clock is not connected to the SAA1099's /WR pin. FF clock is connected to pin 19 of the GAL which is derived from the /WR line ( …

Re: SB 2.0 CT1350 CMS chips dumped

Posted on 2019-04-09, 20:13

in Milliways
As I told, I have an old 386sx and I tested that with turbo off (around 7MHz). I got an awful sound with clicking and pulled notes. I could improve the sound quality by ignoring WR signal when setting the CS. I am a software developer and couldn't leave the software in that shape, so I also cleaned …

Re: SB 2.0 CT1350 CMS chips dumped

Posted on 2019-04-09, 10:17

in Milliways
We brought the knowledge to the community, which is nice, but unfortunately the SB 2.0 is a dying horse, so any contribution in that matter won't be popular enough to meet your expectations. 😀

Re: SB 2.0 CT1350 CMS chips dumped

Posted on 2019-04-08, 21:17

in Milliways
This feels like an old good quest and, funny enough, I tested the CMS by using Monkey Island :) Please don't post your code yet, I'm curious about the other issues and would love to tackle them either. I'd love to hear what kind of problems that would be now. Anyway, thank you for letting us know, …

Finally! CMS Upgrade Equations for All SB2.0s

Posted on 2019-04-08, 21:09

in Milliways
Hi friends! This code is fully compatible with all revisions of Sound Blaster 2.0, including those with the CT1336A bus interface chip. My investment into the hardware has already returned via eBay, and thus I am hereby releasing these GAL equations into the public domain. Also, let me congratulate …

Re: SB 2.0 CT1350 CMS chips dumped

Posted on 2019-04-08, 20:29

in Milliways
If someone wants to share my investment, you are welcome. I have some GALs and SAA1099P left over, I could program them for you. Congratulations, scorp! Your solution is correct. :) There are, however, other issues that need to be addressed too. I'll publish my code shortly. Here it is: CHIP …

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