Re: Reversing the Disney Sound Source

Posted on 2019-04-14, 20:51

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by Paralel

in Marvin \ Sound

in Marvin \ Sound

...I also did a new PCB Design for DSS. But currently somehow busy.. Expect a Update in next months for a 50Hz Buzz Free DSS... Did you ever do this, Matze? I'd be interested in seeing an updated PCB for the DSS alone. I'd like to be able to couple it to my SoundJr. (I wonder if the power for the …

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

Posted on 2019-04-14, 20:14

by

by Paralel

in Marvin \ Sound

in Marvin \ Sound

The one thing I can't figure out in the Sound Jr. Design is why he used two discreet resistor packs, rather than an integrated R2R ladder/network (depends on your choice of words really, seems to be a temporal thing, used to be called ladders, now called networks...), which should have produced …

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Re: firstime user roland sc 55 help

Posted on 2019-04-14, 09:53

by

by Paralel

in Marvin \ Sound

in Marvin \ Sound

Your cable is fine. Of the two round connection it has on it, is one labeled "IN"? If so, plug that into the "OUT" port on the SC-55. The round connector labeled "OUT" goes into the "IN" port on the SC-55. It looks like you have the joystick interface connected properly. You should be all set.

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

Posted on 2019-04-14, 04:58

by

by Paralel

in Marvin \ Sound

in Marvin \ Sound

Wow. I'm impressed. Those look just like the originals! How did you manage to get cases that are identical like that? I'm curious how it's a stretch. If I'm not mistaken, his claims of "8+" bits of "analog sound quality" comes from "8 bits linear PCM + 3 bits range", does the math not work out? Does …

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Re: VOGONS Driver Library

Posted on 2019-04-03, 23:28

by

by Paralel

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

doaks80 wrote: Stiletto wrote: driver manuals. What the hell is a driver manual? It's that thing you study before you get your license to drive. Duh.

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

Posted on 2019-03-21, 17:58

by

by Paralel

in Marvin \ Sound

in Marvin \ Sound

I find it funny, this was a contemporary of the Speech Thing, with an obviously better design, yet, it is far more obscure. I guess that shows you what marketing can do for you. A better product can still languish if it's unknown. Is that black ring an ISO 7089 / DIN 125 M6 washer with 6.4mm inner …

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

Posted on 2019-03-20, 15:41

by

by Paralel

in Marvin \ Sound

in Marvin \ Sound

Given that there is no discreet amp, as had been thought, that action is accomplished by the transistors, correct? I'm very happy you have been able to make a provisional schematic. It's such an uncommon device, I feared it's theories of operation would be lost to time unless someone could unravel …

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

Posted on 2019-03-19, 22:40

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by Paralel

in Marvin \ Sound

in Marvin \ Sound

Thank you, Cloudschatze! That back side is a bit more crowded than I expected. I see: The expected 8×10kΩ resistor array Four more 10kΩ resistors Three more 20kΩ resistors Two capacitors (filtering?) A 470Ω resistor Another 100Ω resistor Another PNP transistor Four NPN transistors (MMST2222A) And …

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

Posted on 2019-03-18, 15:16

by

by Paralel

in Marvin \ Sound

in Marvin \ Sound

I took a look, and I have to say, I am really sorry. I thought I knew exactly where it was, but when I went to grab it and take the photos today, it was not indeed where I thought it was supposed to be. I must have moved it at one point and not remembered. I will have to go through my storage and …

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

Posted on 2019-03-12, 07:29

by

by Paralel

in Marvin \ Sound

in Marvin \ Sound

I apologize for not getting the pictures posted this past weekend, I was unexpectedly rather ill. I should have them up within a day or two.

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

Posted on 2019-03-08, 22:15

by

by Paralel

in Marvin \ Sound

in Marvin \ Sound

Agreed. 😀 I have written so many things, on so many forums, over so many years, I doubt I remember .0001% of it.

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

Posted on 2019-03-07, 21:48

by

by Paralel

in Marvin \ Sound

in Marvin \ Sound

Sorry for how long I have taken to get this done. Life has thrown me a bunch of curve balls recently and I have essentially been just running around putting out fires. I will get this done as soon as I can, hopefully this weekend. I can say part of the SoundJr design is that they specify a certain …

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

Posted on 2019-02-16, 19:24

by

by Paralel

in Marvin \ Sound

in Marvin \ Sound

No prob.

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

Posted on 2019-02-16, 14:50

by

by Paralel

in Marvin \ Sound

in Marvin \ Sound

Strangely, four of the five buttons are connected to a control port (output) pin on the parallel port. I don't know why they connected them like that. That is because the joystick input lines need pull-up resistors and the control lines were originally implemented as open-collector outputs with …

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

Posted on 2019-02-16, 04:20

by

by Paralel

in Marvin \ Sound

in Marvin \ Sound

I got ahold of the original designer of the SoundJr, and was able to get the software that was originally used with it. I believe I uploaded it here. But, if not, I can do that if anybody wants.

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2018-10-17, 17:12

by

by Paralel

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Most likely, it is only for the 5 V version because I don't see any 3.6 V VRM settings. There is a 3.3 V jumper setting, however, I don't see a voltage regulator anywhere on the motherboard. do you know that yours TI SXL2- G 66 is 5V-tolerant CPU? (according to 210 page of TI manual) Good point. …

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Re: SCB-55 Roland daughterboard - what's on those floppy disks?

Posted on 2018-10-10, 00:56

by

by Paralel

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Two interesting things I found on those disks, a different GS_Reset MIDI file, & another mode changing MIDI file named "GM_ON", which I'm guessing shuts down the GS part of the card and has it run in just pure GM mode. I can't say for sure, I don't know much about MIDI beyond its use for DOS gaming …

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Re: SCB-55 Roland daughterboard - what's on those floppy disks?

Posted on 2018-10-08, 19:55

by

by Paralel

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thank You!

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Best SB16 To Pair With An SCB-55?

Posted on 2018-10-08, 19:10

by

by Paralel

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Which version of the SB16 is the best to pair with an SCB-55? Must not have the hanging MIDI bug, also must not muffle MIDI daughterboards. The less noise the better. Must be Non-PNP or just require the simple SYS driver in Config.sys. Must be ISA. Must either have a discrete OPL3 chip (which is …

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Re: SCB-55 Roland daughterboard - what's on those floppy disks?

Posted on 2018-10-08, 18:57

by

by Paralel

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Anyone have images of those disks? I can't get the link above to work.

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