First release of ZSNES sources

zsnes/src/cpu/spcaddr.inc

@@ -0,0 +1,97 @@
+;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
+