INT 15h E820 Query Memory Map Use Debug32.exe

;Input:
;       eax   - function code 0E820H
;       ebx   - continuation code, zero for first call
;       es:di - buffer pointer , point to an buffer for BIOS to fill in.
;       ecx   - buffer size , minimum is 20 bytes
;       edx   - signature 'SMAP'

C:\debug32
-r32
-a
  mov eax, 0000e820
  mov ebx, 0
  mov ecx, 14
  mov edx, 534d4150
  mov di, 200
  int 15
  int 3
  p
-go


;Output:
;       CF    - non-carry indicates no error
;       eax   - signature return 'SMAP'
;       es:di - buffer pointer, same as input
;       ecx   - real buffer size return
;       ebx   - continuation code , zero return if last run occured