On 14 Aug, this message from Brian Hicks echoed through cyberspace: > On Tue, Aug 14, 2001 at 10:39:03AM +0200, [EMAIL PROTECTED] wrote: >> Does anyone ever have tried this? Does anyone know if >> the mouse requires a PC serial port (rs232) or if it >> works on macs (rs???) as well? are the drivers for >> gpm and (most importantly) X compiled-in (or left out >> due to "improbable config")? > > Well, mac serial ports are rs232, just a different connector.
Nope. Macs use RS422, which is different from RS232 in various ways: - different handshake signals - differential signals vs. single-ended (ground-referenced) signals for RS232 - RS232 specifies DB25 connector, DB9 also widely used; RS422 doesn't specify connector. Macs have always used 8-pin mimi-DIN. RS422 can be adapted to RS232 through a hack (that's really what it is...), by connecting TX- on the Mac to TX on the RS232 input, the Mac's RX- to RX on the RS232, and the Mac's RX+ to GND (important). Michel ------------------------------------------------------------------------- Michel Lanners | " Read Philosophy. Study Art. 23, Rue Paul Henkes | Ask Questions. Make Mistakes. L-1710 Luxembourg | email [EMAIL PROTECTED] | http://www.cpu.lu/~mlan | Learn Always. "
