On Tue, Jan 28, 2003 at 09:05:18PM +0100, Frank Gevaerts wrote: > On Tue, Jan 28, 2003 at 06:12:10PM +0000, Hugh Saunders wrote: > > Hello, i am attempting to build a serial cable so i can use an old mac > > laptop [powerbook510] to boot a sun sparc ipc and start it network booting. > > Google reveals the following pinouts: > > > > AppleMac [1] > > DIN8 Signal Description > > Pin > > ---------------------------------- > > 1 RTS Handshake output > > 2 CTS Handshake input > > 3 TXD- Transmit data (inverted) > > 4 SG GND > > 5 RXD- Receive data (inverted) > > 6 TXD+ Transmit data > > 7 DCD General Purpose Input > > 8 RXD+ Receive data > > > > Sparc IPC [2] > > DIN8 Signal Description > > Pin > > ---------------------------------- > > 1 DTR Data Terminal Ready > > 2 CTS Clear to Send > > 3 TXD Transmit Data > > 4 GND Ground > > 5 RXD Receive Data > > 6 RTS Request to Send > > 7 DCD Data Carrier Detect > > 8 RTXC Receive Clock > > > > My first question is: how do i wire it? do i try and match the pins up ie > > RTS-->RTS or do i cross over as in RTS-->CTS? > > > > Next question, whats with TXD[+-] on the mac but only TXD on the sparc? can > > i just use TXD+ -->TXD? [or TXD+ -->RXD if crossed over] then ignore > > TXD-? > > I would wire TX+->RX, RX+->TX, and GND->GND, and leave the rest > unconnected at first, and if you really need hardware handshaking, > RTS<->CTS and CTS<->RTS. Thanks, i understand up to here...
> IIRC some systems also need DTR and /or DCD to > be wired high wired high? will try with just the three you suggest for now... thanks, hugh ps: sorry if the first table is mashed! got figure what mutt does with tabs but thats a different issue. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
