Subversion Repositories eco32

This is a test for the special case 'jalr $31'. One of the following
four possibilities is output on serial line 0:
  0 = jump not executed, return address not stored in $31
  1 = jump was executed, return address not stored in $31
  2 = jump not executed, return address stored in $31
  3 = jump was executed, return address stored in $31