; This test checks the effect of the index looping registers (R8-R11)
incdir  "tests"
include "dsp_base.inc"

; Tests done using AR1 = 0x0010, IX1 = 0. WR1 (wrap 1) means WR1.
; WR1 = 0
;   10, 10, 10, 10,
; WR1 = 1
;   10, 11, 10, 11,
; WR1 = 2
;   10, 12, 11, 13, 12, 11, 13, 12, 11, 13, 12, 11
; WR1 = 3
;   10, 13, 12, 11, 10, 13, 12...
; WR1 = 4
;   10, 14, 13, 17, 16, 15, 14, 13, 17, 16, 15, 14, 13, ... 
; WR1 = 5
;   10, 15, 14, 13, 12, 17, 16, 15, 14, 13, 12, 17, 
; WR1 = 6
;   10, 16, 15, 14, 13, 12, 11, 17, 16, 15, 14, 13
; WR1 = 7
;   10, 17, 16, 15, .. normal
; WR1 = 8
;   10, 18, 17, 1f, 1e, 1d, 1c, 1b, 1a, 19, 18, 17, 1f, 1e, .....


; I really don't know how the above could possibly be efficiently implemented in hardware.
; And thus it's tricky to implement in software too :p

; test using indexing register 1 - 0 is used in send_back
test_main:
lri $AR1, #16
lri $IX1, #32
lri $WR1, #0

call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1

lri $AR1, #16
lri $WR1, #1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1

lri $AR1, #16
lri $WR1, #2
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1

lri $AR1, #16
lri $WR1, #3

call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1

lri $AR1, #16
lri $WR1, #4

call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1

lri $AR1, #16
lri $WR1, #5

call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1

lri $AR1, #16
lri $WR1, #6

call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1

lri $AR1, #16
lri $WR1, #7

call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1

lri $AR1, #16
lri $WR1, #8

call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1
nx'dr  : $AR1
call send_back  ; 1


lri $WR1, #0xFFFF

; We're done, DO NOT DELETE THIS LINE
jmp end_of_test
