luntz@acsu.buffalo.edu (jon e luntz) (06/13/91)
Hi, We are using a motorola VME133xt board on a rack with no disk drive. We are booting and loading the programs from rom. The VME133xt has a z8530 chip which controlls a RS232 and 432 port on the back. Normally, we would fopen the proper /dev/scc0 or whatever file and read or write to that. However since we do not have a disk connected, we would need to somehow open the serial port directly through its kernel device driver. The problem is that there is no major device number assigned to this device (it is just a "-" which means that it is assigned automatically, whatever that means). The operating system is VMEexec v1.2. We want not to have to program in assembly: we want to stick to c. If anyone has had any experience with motorola systems or with using device drivers in general, I'd appreciate any help I could get. Thanks in advance, Jon Luntz Summer Student Oak Ridge National Lab Telerobotic Systems Section, EP&M.