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Re: Beyond a replica - the Covox Blaster

Posted on 2020-06-10, 09:32

in Marvin \ Sound

in Marvin \ Sound

You could also use a 4610X-R2R-104LF network instead of the 4310R-R2R-104LF network. They have the same footprint, are electrically identical and are usually cheaper because of their more primitive package (dipped rather than molded on). They just happened to be out of stock when I built my LPT …

Re: Beyond a replica - the Covox Blaster

Posted on 2020-06-09, 20:18

in Marvin \ Sound

in Marvin \ Sound

What about this one? 4310R-R2R-104LF.jpg This is the exact type of resistor network that I used in my replicas of the Covox Speech Thing and the FTL Sound Adapter . The latter also has a digital (Atari) joystick port. With the R2R network in SIL package you would barely even need a PCB. You could …

Re: Say "Hi!" to the Renovation SSI-2001!

Posted on 2020-06-09, 15:50

in Marvin \ Sound

in Marvin \ Sound

I've updated the documentation a bit. Now it contains jumper settings and a prominent note that explicitly says that you have to adapt the BOM to the variant you want to build.

Re: Say "Hi!" to the Renovation SSI-2001!

Posted on 2020-06-08, 10:07

in Marvin \ Sound

in Marvin \ Sound

Nope. Still not interested. I'd rather try to finish the project before I expand it further. However, feel free to have a go at it! Apropos connector: Are you sure that the DA15 socket you installed has the correct dimensions? It appears to stick out a bit, while at least the plastic part should be …

Re: Say "Hi!" to the Renovation SSI-2001!

Posted on 2020-06-08, 09:17

in Marvin \ Sound

in Marvin \ Sound

Could you also make a fork for a card that fits the Keystone DB15 bracket? That way people could opt for a not-so-authentic look with an almost readymade bracket (apart from the RCA hole). Otherwise I might just make a fork and try to do it myself. Have never done anything in Kicad. ;) Nope. Still …

Re: Beyond a replica - the Covox Blaster

Posted on 2020-06-08, 08:51

in Marvin \ Sound

in Marvin \ Sound

If it's internal, already, you could add amplification, as well. The lack of an easily accessible power supply is the biggest shortcoming that external dongles have to deal with. With an internal device, however, getting 5V somewhere is trivial. The SoundJr happens to work well without dedicated …

Re: Say "Hi!" to the Renovation SSI-2001!

Posted on 2020-06-07, 21:40

in Marvin \ Sound

in Marvin \ Sound

Great Job in reversing / cloning it - and awesome to hear it work! Well, as indicated in the first post, most of the reverse engineering had long been done by others. CodeKiller's annotated board photos from 2012 where particularly useful. The optional mod for fast ISA buses is by Fagear. I merely …

Re: Say "Hi!" to the Renovation SSI-2001!

Posted on 2020-06-07, 21:28

in Marvin \ Sound

in Marvin \ Sound

Congratulations on getting it working! Let's see when I will find the time to adapt the STM32 emulation core for the optional on-board STM32. That should result in an even cheaper solution than a fully assembled card plus SwinSID.

Re: Say "Hi!" to the Renovation SSI-2001!

Posted on 2020-06-07, 20:36

in Marvin \ Sound

in Marvin \ Sound

The jumpers set joystick sensitivity, IO port and joystick en-/disable, respectively. The individual one en-/disables the joystick.

Re: Say "Hi!" to the Renovation SSI-2001!

Posted on 2020-06-07, 19:05

in Marvin \ Sound

in Marvin \ Sound

Stream starts in 15 minutes. https://youtu.be/0BeAUigWrrg Erm... Looks like you're populating everything for the STM32 configuration, including the resistors that set the regulator to 3.3V. And no, JP2 would short out the regulator. JP2 is for the configuration without regulator. It's also funny to …

Re: Say "Hi!" to the Renovation SSI-2001!

Posted on 2020-06-06, 19:17

in Marvin \ Sound

in Marvin \ Sound

A 25 MHz 386 should technically be slow enough. There's a note in the schematic describing the mod, in case you want to do it, anyway. In any case, I suggest that you print out both, the schematic and the component diagram. The schematic because it contains helpful notes and the component diagram …

Re: Cloning the AdLib Gold Surround Sound Module

Posted on 2020-06-06, 13:13

in Marvin \ Sound

in Marvin \ Sound

You can still sell small quantities (i.e. your stock) of PCBs, kits or partially assembled kits without problems. And, as far as taxation is concerned, occasionally selling something for profit does not mean that you are running a business. There is no requirement for people to privately sell things …

Re: Say "Hi!" to the Renovation SSI-2001!

Posted on 2020-06-06, 12:47

in Marvin \ Sound

in Marvin \ Sound

Sunday I will do a livestream for the card. 20:30 CEST / 18:30 UTC. And I'll be watching! Don't forget to check in advance whether you need Fagear's compatibility mod for fast ISA buses. It would still be possible after assembly, but the square pad simplifying it would then be hidden below a chip. …

Re: Say "Hi!" to the Renovation SSI-2001!

Posted on 2020-06-04, 16:46

in Marvin \ Sound

in Marvin \ Sound

Mine have arrived, as well. Filename renovation_ssi_2001_pcbs.jpg File size 324.73 KiB Views 1247 views Thanks for the small group-buy, root42!

Re: Can anybody with AC'97 audio please help me test a DOS player? 😊

Posted on 2020-05-26, 08:05

in Marvin \ Sound

in Marvin \ Sound

The .TXT file says multiple sample rates supported, but that could explain something. Sounded a lot faster than 2x though... Hmmm, now that you mention it, and after I've taken another look at the code, you're right, it does seem to make at least an attempt to read the sample rate from the WAV file …

Re: Replicas of Covox Speech Thing, FTL Sound Adapter and SiliconSoft SoundJr

Posted on 2020-05-23, 14:39

in Marvin \ Sound

in Marvin \ Sound

The evaluation of the joystick ports on the FTL Sound Adapter replicas has been complicated further by the recent realization that my only suitable joystick appears to be broken. If the appropriate pins on the adapter's DE9-connector are bridged with jumper wires, the software on the PC-side will …

Re: Idea: Integrating Sound Blaster emulation in a DOS extender?

Posted on 2020-05-14, 10:39

in PC Emulation

in PC Emulation

Are there any emulation strategies I may have omitted? There is also software-based virtualization. It tries to shift Ring-0 code to a lower privilege level to intercept hardware access and uses a combination of dynamic code scanning/patching, interpretation and memory write-protection traps to …

Re: Is there a way to activate/Set Realtek AC'97 audio under MS-DOS ?

Posted on 2020-05-10, 16:06

in Marvin \ Sound

in Marvin \ Sound

There is the Virtual Sound Blaster software that emulates a Sound Blaster and uses a parallel port DAC or the PC Speaker as output devices and there is MPXPLAY, which can play audio files via AC'97. Both are open source. So there has to be a way to get what you want by splicing them together, but …

Re: Tube Time: Announcing The Snark Barker, a 100% Compatible SB 1.0 Replica!

Posted on 2020-05-06, 08:56

in Marvin \ Sound

in Marvin \ Sound

I'd say so. Wasn't CMS auto-detection based on writing a value to a port and reading it back to see if it is still the same, i.e. buffered by the CMS? If you're looking for a good code analysis tool, try Ghidra!

Re: TNDLPT : Tandy Sound on parallel port

Posted on 2020-05-06, 08:41

in Marvin \ Sound

in Marvin \ Sound

Please add also support for choosing Port Adresses for regular Tandy (0C0/0E0/1E0/2C0h)! Thanks! The modified sound system uses variables for both, the port number and the port output handler function, already. There's just no menu support, yet, which is also why the prototypical TNDLPT support …

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