Note, my cable also has the number 0843-9111, perhaps a date code? The cable assembly consists of a DB-25 Male connector which attaches to the Sparc station. There are 2 cables coming from the DB-25 Male. Each cable is about 12 inches long and goes to separate DB-25 Female connectors. Sun Serial Port Breakout Cable. Sun Part Number 530-1677-01, Rev 50 -----------|--------------|--------------|---------------------------------- DB-25 Male | DB-25 Female | DB-25 Female | Description (to Sparc) | (Serial A) | (Serial B) | O= signal out of computer, Pin # | Pin # | Pin # | I = signal into computer -----------|--------------|--------------|---------------------------------- 1 | - | - | - -----------|--------------|--------------|---------------------------------- 2 | 2 | - | Tx (O), Transmit Data, Port A -----------|--------------|--------------|---------------------------------- 3 | 3 | - | Rx (I), Receive Data, Port A -----------|--------------|--------------|---------------------------------- 4 | 4 | - | RTS (O), Request To Send, Port A -----------|--------------|--------------|---------------------------------- 5 | 5 | - | CTS (I), Clear To Send, Port A -----------|--------------|--------------|---------------------------------- 6 | 6 | - | DSR (I), Data Set Ready, Port A -----------|--------------|--------------|---------------------------------- 7 | 7 | 7 | GND (I/O), Ground, Both Ports -----------|--------------|--------------|---------------------------------- 8 | 8 | - | DCD (I), Data Carrier Detect, | | | Port A -----------|--------------|--------------|---------------------------------- 9 | - | - | - -----------|--------------|--------------|---------------------------------- 10 | - | - | - -----------|--------------|--------------|---------------------------------- 11 | - | - | - -----------|--------------|--------------|---------------------------------- 12 | - | 8 | DCD (I), Data Carrier Detect, | | | Port B -----------|--------------|--------------|---------------------------------- 13 | - | 5 | CTS (I), Clear To Sent, Port B -----------|--------------|--------------|---------------------------------- 14 | - | 2 | Tx (O), Transmit Data, Port B -----------|--------------|--------------|---------------------------------- 15 | 15 | - | DB (I), Transmit Clock, Port A -----------|--------------|--------------|---------------------------------- 16 | - | 3 | Rx (O), Receive Data, Port B -----------|--------------|--------------|---------------------------------- 17 | 17 | - | RTXC (I), Receive Clock, Port A -----------|--------------|--------------|---------------------------------- 18 | - | - | - -----------|--------------|--------------|---------------------------------- 19 | - | 4 | RTS (O), Request To Send, Port B -----------|--------------|--------------|---------------------------------- 20 | 20 | - | DTR (O), Data Terminal Ready, | | | Port A -----------|--------------|--------------|---------------------------------- 21 | - | - | - -----------|--------------|--------------|---------------------------------- 22 | - | - | - -----------|--------------|--------------|---------------------------------- 23 | - | - | - -----------|--------------|--------------|---------------------------------- 24 | 24 | - | DA (O), Transmit Clock, Port A -----------|--------------|--------------|---------------------------------- 25 | - | - | - -----------|--------------|--------------|---------------------------------- NOTE: Not all of the pins are active on all machines. The DA and DB signals are not used for asynchronous devices. $NetBSD: sun_530-1677-01-rev50.txt,v 1.2 2009/04/03 02:38:34 snj Exp $