Mac LCD

Information for using small character LCDs such as the HD44780 with Mac OS X, LCDproc and Growl. And other Apple and Mac USB stuff.

Monday, July 26, 2010

RetroChallenge cables

I am going to need 3 different types of cables to hook up to my future router:

  • DB9 RS422 (old classic Macs)
  • mini-DIN8 RS422 (newer classic Macs)
  • DB9 RS232 (new usb to serial converter)

The 3com documentation for a similar router has all of the pin-outs. The router uses an connector RJ-45 for the AUX serial and console ports, and a DB50(!) connector for the Serial port and the expansion card I bought.

So I went scavenging through the thrift store today to find some old serial cables. I found an old serial port adapter for a Parallel HP printer. It does not look like a real serial to parallel adapter (rather some printer-specific implementation), so I will be cutting off the nice mini-Din8 end of it to make a serial cable for my Mac SE or SE/30.

I bought some male DB9 to RJ45 modular adapters at the surplus electronics store earlier this month. I want to make sure that the pin-outs are correct on the router before I insert the pins in the adapters, because they are really hard to remove. This will connect to the 512K and 128K Macintoshes. I can just use a standard ethernet cable to connect to the router's AUX and console ports. Even though these Macs do not have TCP/IP, I hope the router has a telnet client built in. That will allow a normal serial terminal to connect to the router, then out to other machines.

The USB-serial adapter is easy, and only needs a straight through DB9 cable to connect to the AUX port adapter cable.

As for the DB50 connector, that is another story. I hope that it comes with an adapter cable!

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