Gould K115D - watch the z80 working live!

Hi,
after the older K105D, I got a nice and fully equipped K115D Analyzer from Gould.
It has 64 channels (20MHz) and 16 highspeed channels (100MHz) - unbelievable!
I just connected the 32 channels to my ZX81 (see below) and tested the Z80-Disassembler-Disk:

Now I'm able to watch the CPU working LIVE !!!

This is the ZX81 waiting for a key-Routine (kernal listing):

THE 'INTERRUPT' RESTART
B holds the line number and C the number of the scan line.
0038 INTERRUPT DEC C
  JP NZ,0045,SCAN-LINE
  POP HL
  DEC B
  RET Z
  SET 3,C
0041 WAIT-INT. LD R,A
  EI
  JP (HL)
0045 SCAN-LINE POP DE
  RET Z
  JR 0041,WAIT-INT.