SimpleDigitalLocomotive is intended to control digital model railway locomotives and function models via the serial port (RS.422 (or RS.232 via USB)) or Ethernet port of an Apple Mac running OS X 10.3.9 / 10.4.11 / 10.5.2 / 10.6.1 / 10.7.0 /10.8.2 or newer. It can control digital model railway locomotives, function models and accessories via serial ports on a Mac.
Supported digital central units: Märklin Interface 6050 or 6051 (or compatible devices, so-called P50-syntax-compatible devices), Intellibox-1 (classic IB with serial port; or compatible devices, so-called P50X-syntax-compatible devices), Twin-Center 6802, EasyControl (tested only via serial port), the old Selectrix interface (only SX1-bus), Märklin CS1 60212 and CS1Rel., ECoS, Märklin CS2 60213, 60214, 60215 or newer, CC-Schnitte v2.0 (it is recommended to use the D2XX-driver).
In most cases, to make this program work on modern Macs, you need an USB-to-serial converter. And some units can be connected via Ethernet. SimpleDigitalLocomotive does support both situations.
Note: Though the system requirements state that the minimum version of OS X for SDL-X is OS X 10.4, there is a PowerPC version of the application included in the download.