saddrni.inc

linux下的任天堂模拟器代码。供大家参考。

;Copyright (C) 1997-2007 ZSNES Team ( zsKnight, _Demo_, pagefault, Nach )
;
;http://www.zsnes.com
;http://sourceforge.net/projects/zsnes
;https://zsnes.bountysource.com
;
;This program is free software; you can redistribute it and/or
;modify it under the terms of the GNU General Public License
;version 2 as published by the Free Software Foundation.
;
;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.



;*******************************************************
; Address Modes
;*******************************************************

; 1. Immediate Addressing -- #    - DONE IN PROGRAM

%macro addr_I_8brni 0
    mov al,[esi]
%endmacro

%macro addr_I_16brni 0
    mov ax,[esi]
%endmacro

; 2. Absolute -- a (TESTED)

%macro addr_a_8brni 0
    mov cx,[esi]
    mov bl,[SA1xdb]
    call dword near [memtabler8+ebx*4]
%endmacro

%macro addr_a_16brni 0
    mov cx,[esi]
    mov bl,[SA1xdb]
    call dword near [memtabler16+ebx*4]
%endmacro

; 3. Absolute Long -- al

%macro addr_al_8brni 0
    mov cx,[esi]
    mov bl,[esi+2]
    call dword near [memtabler8+ebx*4]
%endmacro

%macro addr_al_16brni 0
    mov cx,[esi]
    mov bl,[esi+2]
    call dword near [memtabler16+ebx*4]
%endmacro

; 4. Direct -- d (TESTED)

%macro addr_d_8brni 0
    mov bl,[esi]
    mov ecx,[SA1xd]
    call dword near [SA1DPageR8]
%endmacro

%macro addr_d_16brni 0
    mov bl,[esi]
    mov ecx,[SA1xd]
    call dword near [SA1DPageR16]
%endmacro

; 5. Accumulator -- A

%macro addr_A_8brni 0
    mov al,[SA1xa]
%endmacro

%macro addr_A_16brni 0
    mov ax,[SA1xa]
%endmacro

; 7. Direct Indirect Indexed -- (d),y

%macro addr_BdBCy_8brni 0
    mov bl,[esi]
    mov ecx,[SA1xd]
    call dword near [SA1DPageR16]
    mov cx,ax
    mov bl,[SA1xdb]
    add cx,[SA1xy]
    jnc .npb
    inc bl
.npb
    call dword near [memtabler8+ebx*4]
%endmacro

%macro addr_BdBCy_16brni 0
    mov bl,[esi]
    mov ecx,[SA1xd]
    call dword near [SA1DPageR16]
    mov cx,ax
    mov bl,[SA1xdb]
    add cx,[SA1xy]
    jnc .npb
    inc bl
.npb
    call dword near [memtabler16+ebx*4]
%endmacro

; 8. Direct Indirect Indexed Long -- [d],y

%macro addr_LdLCy_8brni 0
    mov ecx,[SA1xd]
    mov bl,[esi]
    add cx,bx
    push cx
    call membank0r16
    pop cx
    add cx,2
    push ax
    call membank0r8
    mov bl,al
    pop ax
    mov cx,ax
    add cx,[SA1xy]
    jnc .npb
    inc bl
.npb
    call dword near [memtabler8+ebx*4]
%endmacro

%macro addr_LdLCy_16brni 0
    mov ecx,[SA1xd]
    mov bl,[esi]
    add cx,bx
    push cx
    call membank0r16
    pop cx
    add cx,2
    push ax
    call membank0r8
    mov bl,al
    pop ax
    mov cx,ax
    add cx,[SA1xy]
    jnc .npb
    inc bl
.npb
    call dword near [memtabler16+ebx*4]
%endmacro

; 9. Direct Indexed Indirect -- (d,x)

%macro addr_BdCxB_8brni 0
    mov ecx,[SA1xd]
    mov bl,[esi]
    add cx,bx
    add cx,[SA1xx]
    call membank0r16
    mov cx,ax
    mov bl,[SA1xdb]
    call dword near [memtabler8+ebx*4]
%endmacro

%macro addr_BdCxB_16brni 0
    mov ecx,[SA1xd]
    mov bl,[esi]
    add cx,bx
    add cx,[SA1xx]
    call membank0r16
    mov cx,ax
    mov bl,[SA1xdb]
    call dword near [memtabler16+ebx*4]
%endmacro

; 10. Direct Indexed With X -- d,x

%macro addr_dCx_8brni 0
    mov ecx,[SA1xd]
    mov bl,[esi]
    add cx,bx
    add cx,[SA1xx]
    call membank0r8
%endmacro

%macro addr_dCx_16brni 0
    mov ecx,[SA1xd]
    mov bl,[esi]
    add cx,bx
    add cx,[SA1xx]
    call membank0r16
%endmacro

; 11. Direct Indexed With Y -- d,y

%macro addr_dCy_8brni 0
    mov ecx,[SA1xd]
    mov bl,[esi]
    add cx,bx
    add cx,[SA1xy]
    call membank0r8
%endmacro

%macro addr_dCy_16brni 0
    mov ecx,[SA1xd]
    mov bl,[esi]
    add cx,bx
    add cx,[SA1xy]
    call membank0r16
%endmacro

; 12. Absolute Indexed With X -- a,x

%macro addr_aCx_8brni 0
    mov cx,[esi]
    mov bl,[SA1xdb]
    add cx,[SA1xx]
    jnc .npb
    inc bl
.npb
    call dword near [memtabler8+ebx*4]
%endmacro

%macro addr_aCx_16brni 0
    mov cx,[esi]
    mov bl,[SA1xdb]
    add cx,[SA1xx]
    jnc .npb
    inc bl
.npb
    call dword near [memtabler16+ebx*4]
%endmacro

; 13. Absolute Indexed With Y -- a,y

%macro addr_aCy_8brni 0
    mov cx,[esi]
    mov bl,[SA1xdb]
    add cx,[SA1xy]
    jnc .npb
    inc bl
.npb
    call dword near [memtabler8+ebx*4]
%endmacro

%macro addr_aCy_16brni 0
    mov cx,[esi]
    mov bl,[SA1xdb]
    add cx,[SA1xy]
    jnc .npb
    inc bl
.npb
    call dword near [memtabler16+ebx*4]
%endmacro

; 14. Absolute Long Indexed With X -- al,x

%macro addr_alCx_8brni 0
    mov cx,[esi]
    mov bl,[esi+2]
    add cx,[SA1xx]
    jnc .npb
    inc bl
.npb
    call dword near [memtabler8+ebx*4]
%endmacro

%macro addr_alCx_16brni 0
    mov cx,[esi]
    mov bl,[esi+2]
    add cx,[SA1xx]
    jnc .npb
    inc bl
.npb
    call dword near [memtabler16+ebx*4]
%endmacro

; 18. Direct Indirect -- (d)
;                 ___________________
;    Instruction: | opcode | offset |
;                 ~~~~~~~~~~~~~~~~~~~
;                          | Direct Register   |
;                         +         |  offset  |
;                          ---------------------
;                 |  00    |  direct address   |
;    then:
;                 |  00    | (direct address)  |
;               + |  DB    |
;                -------------------------------
;    Address:     |     effective address      |

%macro addr_BdB_8brni 0
    mov bl,[esi]
    mov ecx,[SA1xd]
    call dword near [SA1DPageR16]
    mov cx,ax
    mov bl,[SA1xdb]
    call dword near [memtabler8+ebx*4]
%endmacro

%macro addr_BdB_16brni 0
    mov bl,[esi]
    mov ecx,[SA1xd]
    call dword near [SA1DPageR16]
    mov cx,ax
    mov bl,[SA1xdb]
    call dword near [memtabler16+ebx*4]
%endmacro

; 19. Direct Indirect Long -- [d]
;                 ___________________
;    Instruction: | opcode | offset |
;                 ~~~~~~~~~~~~~~~~~~~
;                          | Direct Register   |
;                         +         |  offset  |
;                          ---------------------
;                 |  00    |  direct address   |
;    then:
;                -------------------------------
;    Address:     |       (direct address)     |

%macro addr_LdL_8brni 0
    mov bl,[esi]
    mov ecx,[SA1xd]
    add cx,bx
    push cx
    call membank0r16
    pop cx
    add cx,2
    push ax
    call membank0r8
    mov bl,al
    pop ax
    mov cx,ax
    call dword near [memtabler8+ebx*4]
%endmacro

%macro addr_LdL_16brni 0
    mov bl,[esi]
    mov ecx,[SA1xd]
    add cx,bx
    push cx
    call membank0r16
    pop cx
    add cx,2
    push ax
    call membank0r8
    mov bl,al
    pop ax
    mov cx,ax
    call dword near [memtabler16+ebx*4]
%endmacro

; 22. Stack Relative -- d,s

%macro addr_dCs_8brni 0
    mov bl,[esi]
    mov cx,[SA1xs]
    add cx,bx
    call membank0r8
%endmacro

%macro addr_dCs_16brni 0
    mov bl,[esi]
    mov cx,[SA1xs]
    add cx,bx
    call membank0r16
%endmacro

; 23. Stack Relative Indirect Indexed -- (d,s),y (TESTED)

%macro addr_BdCsBCy_8brni 0
    mov bl,[esi]
    mov cx,[SA1xs]
    add cx,bx
    call membank0r16
    mov cx,ax
    mov bl,[SA1xdb]
    add cx,[SA1xy]
    jnc .npb
    inc bl
.npb
    call dword near [memtabler8+ebx*4]
%endmacro

%macro addr_BdCsBCy_16brni 0
    mov bl,[esi]
    mov cx,[SA1xs]
    add cx,bx
    call membank0r16
    mov cx,ax
    mov bl,[SA1xdb]
    add cx,[SA1xy]
    jnc .npb
    inc bl
.npb
    call dword near [memtabler16+ebx*4]
%endmacro