www.pudn.com > zsnes117b-src.zip > spcaddr.inc

;Copyright (C) 1997-2001 ZSNES Team ( zsknight@zsnes.com / _demo_@zsnes.com ) 
; 
;This program is free software; you can redistribute it and/or 
;modify it under the terms of the GNU General Public License 
;as published by the Free Software Foundation; either 
;version 2 of the License, or (at your option) any later 
;version. 
; 
;This program is distributed in the hope that it will be useful, 
;but WITHOUT ANY WARRANTY; without even the implied warranty of 
;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
;GNU General Public License for more details. 
; 
;You should have received a copy of the GNU General Public License 
;along with this program; if not, write to the Free Software 
;Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
 
 
 
 
 
 
 
 
 
; A,DP addressing mode 
%macro SPCaddr_DP 0 
      mov bl,[ebp] 
      add ebx,[spcRamDP] 
      inc ebp 
      ReadByte 
%endmacro 
 
%macro SPCaddr_DP_X 0 
      mov bl,[ebp] 
      add bl,[spcX] 
      add ebx,[spcRamDP] 
      inc ebp 
      ReadByte 
%endmacro 
 
%macro SPCaddr_LABS 0 
      mov bx,[ebp] 
      add ebx,spcRam 
      ReadByte 
      add ebp,2 
%endmacro 
 
%macro SPCaddr_LABS_X 0 
      mov bl,[spcX] 
      add bx,[ebp] 
      add ebp,2 
      add ebx,spcRam 
      ReadByte 
%endmacro 
 
; A,(X) 
%macro SPCaddr__X_ 0 
      mov bl,[spcX] 
      add ebx,[spcRamDP] 
      ReadByte 
%endmacro 
 
; A,labs+Y 
%macro SPCaddr_LABS_Y 0 
      mov bl,[spcY] 
      add bx,[ebp] 
      add ebp,2 
      add ebx,spcRam 
      ReadByte 
%endmacro 
 
; A,(DP,X) 
%macro SPCaddr_bDP_Xb 0 
      mov bl,[ebp] 
      add bl,[spcX] 
      xor eax,eax 
      add ebx,[spcRamDP] 
      inc ebp 
      mov ax, word [ebx] 
      mov ebx,eax 
      add ebx,spcRam 
      ReadByte 
%endmacro 
 
%macro SPCaddr_bDPb_Y 0 
      mov bl,[ebp] 
      xor eax,eax 
      add ebx,[spcRamDP] 
      inc ebp 
      mov ax,[ebx] 
      add ax,[spcY] 
      mov ebx,eax 
      add ebx,spcRam 
      ReadByte 
%endmacro