[ scummvm-Bugs-3138384 ] SysEx issues with real MT-32

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Bugs item #3138384, was opened at 2010-12-15 20:57
Message generated for change (Tracker Item Submitted) made by benshadwick
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Category: iMuse/Music
Group: SCI: Quest for Glory 2
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Ben Shadwick (benshadwick)
Assigned to: Nobody/Anonymous (nobody)
Summary: SysEx issues with real MT-32

Initial Comment:
ScummVM version: 1.3.0svn54897 (Dec 13 2010 11:14:31)
Language: English
Version: Quest for Glory Anthology CD-ROM
Platform: Windows 7 x64
Description:
When I launch Quest for Glory II: Trial by Fire in the ScummVM version listed above on my real MT-32, I get an \"Exc. Checksum error\" while ScummVM is uploading the SysEx banks (which indicates that ScummVM is probably sending the SysEx data too rapidly). I then get title screen music that sounds noticeably different from what I hear when running the original Sierra interpreter version in DOSBox.

I\'ve made some recordings using Audacity just for this bug report; you can find them here: http://www.multiupload.com/L0O83O213Q

The files are one minute recordings of title screen music, with descriptions as follows:
qfg2-dosbox.ogg - Recording while playing original version in DOSBox at 1800 cycles (avoids same "Exc. Checksum error").
qfg2-scummvm.ogg - Recording while playing in ScummVM.
qfg2-scummvm2.ogg - For this one I started the game in DOSBox, then cut off the MIDI connection to my MT-32 and switched over to running the game in ScummVM, then restored the MIDI connection. Net result is running with ScummVM but with original version SysEx.

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