> At the risk of having the wrong idea, I will announce > that I have a (paper) copy of Roland Corporation's > Technical Reference Manual for the MPU-401 (Also > called MPU-IPC-T), printed in 1985. That's the one. Great! > Back about 8 years ago I used it to program the > hardware device (the MPU401) to do simple recording > and playback, through DOS using assembler commands. It > includes a description of the MPU Data format, > commands that could be sent to the MPU401, a Schematic > Diagram for the MPU401, the meaning of the bits that > arrive/go through ports 0x330 and 0x331 (or whichever > other ones you might have changed them to), > pseudo-assembler examples on how to do useful things > with the MPU401 (eg. record a track, playback a track, > etc.), how and when to enable/disable interrupts; all > up about 70 pages, in type-written (courier) font (It > was 1985!) > Is that the kind of specification you are looking > for=3F I believe that when the sound blaster came on > the scene, it's midi was designed to emulate the > operation of this specific hardware device, hence > where the name sort of came from. Yes, exactly. It's the MPU401 datasheet, kind of bible. Okay, by learning from some open-source MPU401 drivers out there we may find some tricky stuffs too when time will come to rewrite the BeOS mpu401 kernel module. > BTW, I am a 23 year old in Australia. And when you travel in another country=3F ;-) Anyway, thanks. I guess midi team leader will ve glad to head about any possibilities to convert this paper documentation into digital and host it at midi team web... -Philippe -- Fortune Cookie Says: Philogyny recapitulates erogeny; erogeny recapitulates philogyny.