assembly - -10 から 10 までの乱数を大量にカウントするのに助けが必要です

Question

TITLE   random practice (rand.asm)
; Penpa Gyaltsen,csc310

INCLUDE Irvine32.inc
.data
  a dword 1
  b dword 10
  cuntx dword 100 dup(0)
  space byte " ",0
  delta dword ?
.code
main PROC
  call randomize
  mov eax, 0
  mov esi, 0

  mov eax, b
  sub eax, a
  inc eax
  mov delta, eax

  mov ecx, delta
  mov esi, offset cuntx
  mov edx, offset space
  mov ecx, lengthof cuntx
L1:
  mov eax,delta
  call randomrange
  inc eax

  call writedec
  call writestring

  mov esi,eax
  inc cuntx[esi]
  mov eax,cuntx[esi]
  call writedec
  call crlf
  loop L1;
  exit
main ENDP
END main

-10 から 10 までの各数字を数える必要があります。どうすればよいですか?