Subj : Amiga serial ports
To   : Jeff Bowman
From : Andy Ball
Date : Mon Mar 10 2008 19:52:02

Hello,

Here's a wiring arrangement          Amiga             PC
that should work for SLIP or         ~~~~~~            ~~~~~
PPP between Amiga 25 pin and         FG   1
PC 9 pin serial ports.  It is
an ordinary DTE-to-DTE "null         TXD  2 ----\/---- 3 TXD
modem" cable that would also         RXD  3 <---/\---> 2 RXD
let you log into the PC from
the Amiga if you were running        RTS  4 ----\/---- 7 RTS
unix on the PC, or let you           CTS  5 <---/\---> 8 CTS
log into the Amiga if it's
running BBS software that            DTR 20 ----\/---- 4 DTR
supports a direct connection.        DSR  6 <-+-/\-+-> 6 DSR
I've a vague recollection            DCD  8 <-'    `-> 1 DCD
that the Amiga could be
persuaded to dump information from its serial port in the event of a crash and I wouldn't be surprised if AmigaDOS could redirect its console to/from the serial port.

Power supply pins (stay away from these) follow.  These pin- outs are straight from the web, so check for yourself before using them, or any pins other than the eight shown above. Use good screened/shielded untwisted cable and connect the screen to pin one (frame ground) at the Amiga end only.

A1000                        Other Amigas

  14 -5V  50mA max             9 +12V 20mA max
  21 +5V                      10 -12V 20mA max
  23 +12V 20mA max

Hope this helps,
  - Andy Ball.

--- BBBS/LiI v4.01 Flag
 * Origin: Prism bbs (1:261/38)

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