Here is some of the output from the Lab Training exercise, also known as Assignment 0.

0BEGIN XSNAP - CALL     1 AT E000000A USER REGISTERS                                                                                 
0 REGS 0-7      F4F4F4F4    0B0B0B0C    F4F4F4F4    F4F4F4F4    F4F4F4F4    F4F4F4F4    F4F4F4F4    F4F4F4F4                         
  REGS 8-15     F4F4F4F4    F4F4F4F4    F4F4F4F4    F4F4F4F4    F4F4F4F4    00000010    FFFE7960    00000000

The two lines labeled as "REGS" list the values of the 16 registers, 0 through 7 on the first line and 8 through 15 on the second line. The code in the sample program sets register 1 to the value X'0B0B0B0C'. Most of the others have a default value of F4F4F4F4. Sooner or later we will learn more about the values in the last three registers.