Rabbit 2000 - Page 43

Designer’s Handbook 41
80 24 80 //terminate bootstrap, start at address zero
;test program
ld hl,1
ld b,16
loop:
ld a,(hl)
add hl,hl ; shift left
djnz loop ; 16 steps
jp 0 ; continue test
If this test runs it will toggle the first 16 address lines. In addition, all of the data lines must
be functioning or the program would not execute correctly.