Re: Some Channel mode and Control change msgs - any idea what the Controller-Nrs are?

Posted on 2021-07-12, 08:20

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by sergm

in MT-32 Development

in MT-32 Development

llm wrote on 2021-07-12, 08:02: thank your for the source link - as usual - the best documentation Kind of. If I was cloned, I'd write up smth in the wiki... *sigh*

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Re: Some Channel mode and Control change msgs - any idea what the Controller-Nrs are?

Posted on 2021-07-12, 07:53

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by sergm

in MT-32 Development

in MT-32 Development

these are hardcoded calls in the game that im reversing - im trying to figure out what the controller-nrs are and what the values or value-ranges are allowed If you are interested in details of the MT-32 MIDI implementation, then the standard MIDI specs aren't particularly useful. I'd recommend to …

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Re: Strange Bender range address offset calculation

Posted on 2021-07-11, 17:16

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by sergm

in MT-32 Development

in MT-32 Development

Yes, the pattern PlayMsg cmd_buf: B6 07 7F <-- func0 with 0xB0 Base PlaySysex: F0 41 10 16 12 03 00 54 70 39 F7 <-- func1 (with the != 10) looks very much like --value is nothing more than an adjustment for the standard MIDI channel mapping in MT-32 MIDI channel 2-9 -> part 1-8 Since we use 0-based …

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Re: Strange Bender range address offset calculation

Posted on 2021-07-11, 12:03

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by sergm

in MT-32 Development

in MT-32 Development

I don't know for sure, as I didn't bother looking at the full disasm code. But again, the magic number "10" here would suggest that the code attempts to deal with the rhythm channel specially. As we both noted, part 9 does not exist, but there is a rhythm part that is specially addressed. And in …

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Re: Strange Bender range address offset calculation

Posted on 2021-07-11, 09:22

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by sergm

in MT-32 Development

in MT-32 Development

but address byte1 is always 0 so its 0x03 - base address 0x00 - address byte1 0x?4 - address byte2, only the high nibble of this address byte is changed, low nibble is always 4 I still see no problems with that, assuming the parts are mapped to MIDI channels 2-9, and the game does not send bogus …

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Re: Strange Bender range address offset calculation

Posted on 2021-07-11, 07:55

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by sergm

in MT-32 Development

in MT-32 Development

Not sure, do you have the MT-32 MIDI implementation handy? If not, see http://www.synthzone.com/midi/roland/mt32/mt32-2.txt

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Re: Strange Bender range address offset calculation

Posted on 2021-07-11, 07:43

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by sergm

in MT-32 Development

in MT-32 Development

I don't think this is wrong. Let us look at the address mapping of the patch temp area: Whole Part (accessible on unit#) Start Address Description ------------- ---------------------------- 03 00 00 Patch Temp Area (part 1) 03 00 10 Patch Temp Area (part 2) : 03 00 60 Patch Temp Area (part 7) 03 00 …

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Re: Installation Error: File copying error

Posted on 2021-07-03, 06:46

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by sergm

in MT-32 General

in MT-32 General

Infinstall_x64.exe install didn't work, it gave me this error: Cannot install MT32Emu MIDI Driver; Error: e0000247. Argh, right... It needs a signed driver first time you install it, so the correct spell was "infinstall_x64.exe install -sign" actually. Sorry about that (although that's all written …

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Re: Installation Error: File copying error

Posted on 2021-07-02, 16:21

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by sergm

in MT-32 General

in MT-32 General

I copied the mt32emu.dll to the system32 folder, and the mt32emu_x64.dll to the syswow64 folder, renaming it to mt32emu.dll like you said, and then restarted my computer for good measure. Sadly, this is not what I said. Thanks to Microsoft, System32 contains 64-bit files and syswow64 in contrast - …

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Re: Installation Error: File copying error

Posted on 2021-07-02, 14:12

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by sergm

in MT-32 General

in MT-32 General

Is there a way to download that file individually and manually copy it there? Sure, you can download a dedicated package with the driver only from here . Moreover, the driver DLLs must be installed with the package into Program Files/munt//mt32emu_win32drv where you should be able to copy it from. …

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Re: Installation Error: File copying error

Posted on 2021-07-02, 06:09

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by sergm

in MT-32 General

in MT-32 General

That's a rare problem, I'd say. This error message is shown when the 64-bit MIDI driver DLL (mt32emu.dll) cannot be copied to the Windows System32 directory for any reason. See if your user has permissions to write there (perhaps, some AV stuff blocking access?), or maybe an older version of the …

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Re: What is Controller-Number 6 in a Control-Change message?

Posted on 2021-06-28, 09:32

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by sergm

in MT-32 Development

in MT-32 Development

AFAICT, this is totally correct with respect to the MIDI implementation of MT-32 ver. 2.0. Real devices only care about the MSB of the bender range, and that is clamped to the valid value range of 0..24 further. LSB is completely ignored.

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Re: What is Controller-Number 6 in a Control-Change message?

Posted on 2021-06-28, 05:27

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by sergm

in MT-32 Development

in MT-32 Development

BTW note, this stuff only works with newer MT-32 compatible hardware. The original "old" MT-32 ignores RPN controls altogether, and the pitch bender range can only be set via the respective SysEx messages.

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Re: Need help to disect some Sysex Messages

Posted on 2021-06-10, 08:18

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by sergm

in MT-32 General

in MT-32 General

this case seem to be easy - there is a simple algorithm that creates PatchTemporaryArea/Bender-range set msgs - and it seems that the calculation is just buggy - sometimes the msg size is wrong and the wrong value is also calculated inside - seem to be some sort of overflow of the logic Oh, yeah. …

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Re: Need help to disect some Sysex Messages

Posted on 2021-06-10, 07:37

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by sergm

in MT-32 General

in MT-32 General

time to understand why the game sends this wrong value and the incomplete message Not sure this is possible :) But a few common reasons do exist. Typically, the composer works with a different hardware that may send some bogus data. It may happily remain unnoticed unless it disturbs the audio …

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Re: MUNT Midi Recording Issue

Posted on 2021-04-24, 16:36

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by sergm

in MT-32 General

in MT-32 General

Yes, I mean exactly having a single "init" recording with just SysExes. But that will work if the game only loads custom timbres once at startup, of course. Some games are known to send timbres per tune, and rarely, even while playing a tune.

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Re: MUNT Midi Recording Issue

Posted on 2021-04-24, 14:24

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by sergm

in MT-32 General

in MT-32 General

Great, I'm glad you figured it out. BTW, I have one more tip on MIDI recording. When a game uploads new tones at the very startup only (which is a quite common case), you may make a recording of that timbre bank just once. To make other recordings sound "correct", you may merely prepend that SysEx …

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Re: MUNT Midi Recording Issue

Posted on 2021-04-24, 05:43

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by sergm

in MT-32 General

in MT-32 General

Checked MIDI recorder on Windows and found no problems. Obviously, when I start recording after the initial bunch of SysExes has passed already, the captured MIDI sounds weird. But when I start recording before starting a game, everything is dandy. Maybe ScummVM sends the SysEx bank differently …

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Re: MUNT Midi Recording Issue

Posted on 2021-04-23, 08:06

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by sergm

in MT-32 General

in MT-32 General

Well, if rolling back does not help, it seems that the problem lays in something different. The recordings attached suggest that they are missing SysEx messages that contain custom timbres/patches. I'll double-check if the new version records them correctly, but the old version surely did that.

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Re: MUNT Midi Recording Issue

Posted on 2021-04-23, 05:53

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by sergm

in MT-32 General

in MT-32 General

Hi Mrdangerous, I assume you've missed one way to solve the problem you describe: downgrading the application. Munt version 2.4.0 incorporates a new implementation of the MIDI recording function, so regressions are well possible. To be honest, I only did no more than a smoke test of this particular …

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