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. IIRC some systems also need DTR and /or DCD to be wired high Frank > The weak debian link is that it will [if i ever get it booted] > be a debian box :-) > > thanks, > > hugh > > Datafrom: > [1]http://62.194.125.41:8080/pinouts/mac_pc_serial.html > >[2]http://www.stokely.com/unix.serial.port.resources/A-B-Ycablepinout.html#ipc.ipx.link > > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
