knudsen@ihlpl.ATT.COM (Knudsen) (10/21/88)
We've seen a couple articles about hacking the Modem Pak (now on sale for $30) to drive an external modem (like an RS232 Pak). Another trick would be to hack it to a MIDI synthesizer driver and receiver. This would require changing the crystal to some multiple of 1.000 MHz (1,000,000 Hz / 32 = 31.25 KBaud for MIDI). Also replacing the modem chip with a little hardware (couple resistors and an opto-isolator) to send and receive MIDI current loop. And of course mounting the two DIN jacks. Given that only one company (Intercomp Sound in Rochester, NY) is selling MIDI Paks, for around $90, rolling your own from a $30 modem pak sounds like a good use for a rainy weekend. Of course a similar conversion applies to the RS232 Pak, tho it's much more valuable as-is than is a 300 Baud Modem Pak. mike k -- Mike Knudsen Bell Labs(AT&T) att!ihlpl!knudsen "Lawyers are like handguns and nuclear bombs. Nobody likes them, but the other guy's got one, so I better get one too."