Re: About Roland Virtual Sound Canvas 3

Posted on 2020-10-06, 22:03

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

And another question: in Piano1 that has 10 samples, how to interpret "Multi-sample Split Points (Note Value)" - is it correct my understanding that 9 split points make 10 intervals and for each such interval assign the corresponding pcm data? Exactly. (The color separation in the spreadsheet …

---

Re: About Roland Virtual Sound Canvas 3

Posted on 2020-10-06, 19:13

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

I'm not sure if this will help, or confuse matters more, but here's a spreadsheet I'd put together concerning the SC-55 v1.21 ROM (with some additional information provided by NewRisingSun). https://www.symphoniae.com/synth/Roland/SC55/ … OCS/SC_121.xlsx

---

Re: About Roland Virtual Sound Canvas 3

Posted on 2020-10-06, 18:58

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

mattw wrote on 2020-10-06, 18:27: I can as well extract every of those "original tones" to playable WAV file ... So, where what I've described as an "original tone" is a multi-sample, what does that sound like was a WAV file? Presumably ten piano notes, as concerns "PIANO1"?

---

Re: About Roland Virtual Sound Canvas 3

Posted on 2020-10-06, 17:35

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

(I still call them "things", because I am not sure what to call them exactly, i.e. instruments, patches, sounds, etc) The exact terminology is unknown and is, regrettably, open to interpretation. I'd mapped-out some of the data concerning the SC-55 program ROM a number of years ago, deducing the …

---

Re: What retro activity did you get up to today?

Posted on 2020-10-06, 04:22

by

by Cloudschatze

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Attempted to prettify Windows 3.0 on the Tandy 1000 TL/3 setup. Hooray. The restrictions concerning wallpaper usage in real-mode, and at higher resolutions, are... especially fun.

---

Re: PS/2 mouse on IBM PS/2 models 25-8086 and 30-8086

Posted on 2020-10-04, 16:41

by

by Cloudschatze

in PC Emulation

in PC Emulation

Tandy 1000RL and RLX both are XT and PS/2, on those windows can’t find the ps/2 mouse because it’s on the wrong irq The PS/2 keyboard and mouse in the Tandy 1000 TL/3, RL, and RLX share the use of IRQ 1, similar to the IBM PS/2 Model 25/30 behavior described in this thread. I came up with a one- …

---

Re: Looking for Diamond SpeedStar 24X WDC Bios files

Posted on 2020-09-25, 18:59

by

by Cloudschatze

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here's version 2.02 that I dumped from my card, which bears M27C256B-12F1 EPROM chips (both of which contain the exact same data). You'll probably want to rename the file with a .BIN extension.

---

Re: About Roland Virtual Sound Canvas 3

Posted on 2020-09-25, 15:20

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

I wonder if companding only applies to the hardware counterparts. I hadn't looked at the sizes of the VSC .DAT files prior to now, but assuming we're still dealing with ~6MB of uncompressed data (as concerns the 1.72MB VSC55.DAT file), there's a greater reduction in size than what 2:1 companding …

---

Re: About Roland Virtual Sound Canvas 3

Posted on 2020-09-24, 13:43

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

mattw wrote on 2020-09-24, 09:39: ...or its Sound banks use some "encoding" and need processing before they become wave PCM data. In theory, the Roland PCM data is mu-law companded.

---

Re: Apparently not all GS-only sc-55s are the same, some are GM

Posted on 2020-09-18, 18:57

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

I believe the 2.00 units fix the GM reset being interpreted as GS reset issue, resulting in issues with some Build engine games. However that's based on reading other posts here, not my own first-hand experience. I'm not sure that I'm familiar with the Build issues. Hypothetically though, a …

---

Re: Apparently not all GS-only sc-55s are the same, some are GM

Posted on 2020-09-18, 18:12

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

Sorry for the necroposting, but why SC-55 v1.2x and not v2.00? What does v2.00 "loses"? Is it the whole CTF fiasco? Or the GM reset? Or what? The program change behavior when selecting drum sets differs slightly between the v1.2x and v2.00 SC-55 units (thats v2.00, not mkII; the latter of which …

---

Re: New sound card project: AWE64 Legacy

Posted on 2020-09-13, 03:37

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

I imagine that the 49,716Hz digital output from the OPL core those cards gets re-sampled to 44.1 KHz for SPDIF output, or does it and if so how ? The output sample rate of the OPL3 does get converted by the EMU8000, but the exact means (presumably) remains speculative. There was a whole thread …

---

Re: Looking for a list of dos games that require an intelligent mode MPU-401

Posted on 2020-09-11, 17:29

by

by Cloudschatze

in DOS

in DOS

Beyond just the three or four bytes of buffering per MPU track that may reduce busy/wait output cycling (where most of the applicable games utilize just a single MPU track besides), a majority of the games "requiring" intelligent-mode MPU compatibility don't actually leverage the MPU feature set in …

---

Re: Identifying components on Gravis Ultrasound MAX Rev. 1.8 and Roland SCB-7

Posted on 2020-09-10, 15:26

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

TDK's ACF451832-103-TD01 is a suitable filter replacement for those missing on the SCB-7. I performed a similar repair on an SCB-55 several years ago:

---

Re: Newly written driver(s) for Sierra's Creative Interpreter – Starting with Plantronics ColorPlus

Posted on 2020-09-04, 21:11

by

by Cloudschatze

in Marvin \ Video

in Marvin \ Video

Someone actually wrote an Olivetti M24 640x400 monochrome mode SCI driver, years ago! I believe it was some Swedish guy. Anders Olsson. :) The Olivetti/AT&T driver you're referring to is included in an archive of files that he sent me several years ago: http://www.symphoniae.com/elw/sierrautil.zip

---

Re: Seeking suggestions for first ISA model sound card for new dos rig

Posted on 2020-09-02, 18:22

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

dionb wrote on 2020-09-02, 18:07: digistorm wrote on 2020-09-02, 16:50: I can’t hear the noise of a CT1740 above the noise of an appropriate retro pc of that era anyway 🤣 Then you need bigger loudspeakers 😜 Or, perhaps his card is just appropriately configured. 😉

---

Re: MT-32 PCM list

Posted on 2020-08-26, 21:26

by

by Cloudschatze

in MT-32 General

in MT-32 General

digger wrote on 2020-08-26, 21:19: Interesting. Until now I assumed that since the CM-32L was basically an MT-32 with additional built-in sound effects, the original MT-32 wouldn't have a lot of those. Hope I'm not misunderstanding the comment, but just to clarify, the "Bank 2" waveforms in the …

---

Re: MT-32 PCM list

Posted on 2020-08-26, 21:07

by

by Cloudschatze

in MT-32 General

in MT-32 General

Anyway, just for the sake of curiosity, do you have any information on where the list is compiled from which document? The information from Roland Japan was provided as a typed list in response to an e-mail inquiry I'd made back in 2005. I imagine it came from some internal documentation of theirs. …

---

Re: Sb16 Value CT2770 with CT1747 OPL chip - any good? What can you tell me about it?

Posted on 2020-08-26, 20:22

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

I thought majority of the noise was due to the CT1703 DAC revision used on the card? Interesting. I always wrote mine off because it has a CT1703-T which is considered noisy. Incidentally, my CT2770 has a CT1745-S, is this a more or less desirable mixer chip? I'd suggest arriving at your own …

---

Re: PS/2 MCA Soundoptions

Posted on 2020-08-26, 15:53

by

by Cloudschatze

in Marvin \ Sound

in Marvin \ Sound

The combination of a Disney Sound Source, Resound 2 or Plaid Bib, and serial-port MIDI (either via SoftMPU or modified drivers) would provide a fair amount of coverage.

---