First release of ZSNES sources
This commit is contained in:
teuf
409
zsnes/src/cpu/addrni.asm
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409
zsnes/src/cpu/addrni.asm
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;Copyright (C) 1997-2001 ZSNES Team ( zsknight@zsnes.com / _demo_@zsnes.com )
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;
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;This program is free software; you can redistribute it and/or
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;modify it under the terms of the GNU General Public License
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;as published by the Free Software Foundation; either
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;version 2 of the License, or (at your option) any later
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;version.
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;
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;This program is distributed in the hope that it will be useful,
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;but WITHOUT ANY WARRANTY; without even the implied warranty of
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;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;GNU General Public License for more details.
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;
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;You should have received a copy of the GNU General Public License
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;along with this program; if not, write to the Free Software
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;Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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;*******************************************************
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; Address Modes
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;*******************************************************
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; 1. Immediate Addressing -- # - DONE IN PROGRAM
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%macro addr_I_8brni 0
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mov al,[esi]
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%endmacro
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%macro addr_I_16brni 0
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mov ax,[esi]
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%endmacro
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; 2. Absolute -- a (TESTED)
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%macro addr_a_8brni 0
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mov cx,[esi]
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mov bl,[xdb]
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call dword near [memtabler8+ebx*4]
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%endmacro
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%macro addr_a_16brni 0
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mov cx,[esi]
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mov bl,[xdb]
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call dword near [memtabler16+ebx*4]
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%endmacro
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; 3. Absolute Long -- al
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%macro addr_al_8brni 0
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mov cx,[esi]
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mov bl,[esi+2]
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call dword near [memtabler8+ebx*4]
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%endmacro
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%macro addr_al_16brni 0
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mov cx,[esi]
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mov bl,[esi+2]
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call dword near [memtabler16+ebx*4]
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%endmacro
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; 4. Direct -- d (TESTED)
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%macro addr_d_8brni 0
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mov bl,[esi]
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mov ecx,[xd]
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call dword near [DPageR8]
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%endmacro
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%macro addr_d_16brni 0
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mov bl,[esi]
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mov ecx,[xd]
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call dword near [DPageR16]
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%endmacro
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; 5. Accumulator -- A
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%macro addr_A_8brni 0
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mov al,[xa]
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%endmacro
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%macro addr_A_16brni 0
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mov ax,[xa]
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%endmacro
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; 7. Direct Indirect Indexed -- (d),y
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%macro addr_BdBCy_8brni 0
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mov bl,[esi]
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mov ecx,[xd]
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call dword near [DPageR16]
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mov cx,ax
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mov bl,[xdb]
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add cx,[xy]
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jnc .npb
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inc bl
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.npb
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call dword near [memtabler8+ebx*4]
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%endmacro
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%macro addr_BdBCy_16brni 0
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mov bl,[esi]
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mov ecx,[xd]
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call dword near [DPageR16]
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mov cx,ax
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mov bl,[xdb]
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add cx,[xy]
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jnc .npb
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inc bl
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.npb
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call dword near [memtabler16+ebx*4]
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%endmacro
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; 8. Direct Indirect Indexed Long -- [d],y
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%macro addr_LdLCy_8brni 0
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mov ecx,[xd]
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mov bl,[esi]
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add cx,bx
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push cx
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call membank0r16
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pop cx
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add cx,2
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push ax
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call membank0r8
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mov bl,al
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pop ax
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mov cx,ax
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add cx,[xy]
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jnc .npb
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inc bl
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.npb
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call dword near [memtabler8+ebx*4]
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%endmacro
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%macro addr_LdLCy_16brni 0
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mov ecx,[xd]
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mov bl,[esi]
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add cx,bx
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push cx
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call membank0r16
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pop cx
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add cx,2
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push ax
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call membank0r8
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mov bl,al
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pop ax
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mov cx,ax
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add cx,[xy]
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jnc .npb
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inc bl
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.npb
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call dword near [memtabler16+ebx*4]
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%endmacro
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; 9. Direct Indexed Indirect -- (d,x)
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%macro addr_BdCxB_8brni 0
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mov ecx,[xd]
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mov bl,[esi]
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add cx,bx
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add cx,[xx]
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call membank0r16
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mov cx,ax
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mov bl,[xdb]
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call dword near [memtabler8+ebx*4]
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%endmacro
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%macro addr_BdCxB_16brni 0
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mov ecx,[xd]
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mov bl,[esi]
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add cx,bx
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add cx,[xx]
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call membank0r16
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mov cx,ax
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mov bl,[xdb]
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call dword near [memtabler16+ebx*4]
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%endmacro
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; 10. Direct Indexed With X -- d,x
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%macro addr_dCx_8brni 0
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mov ecx,[xd]
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mov bl,[esi]
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add cx,bx
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add cx,[xx]
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call membank0r8
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%endmacro
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%macro addr_dCx_16brni 0
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mov ecx,[xd]
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mov bl,[esi]
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add cx,bx
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add cx,[xx]
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call membank0r16
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%endmacro
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; 11. Direct Indexed With Y -- d,y
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%macro addr_dCy_8brni 0
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mov ecx,[xd]
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mov bl,[esi]
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add cx,bx
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add cx,[xy]
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call membank0r8
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%endmacro
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%macro addr_dCy_16brni 0
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mov ecx,[xd]
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mov bl,[esi]
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add cx,bx
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add cx,[xy]
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call membank0r16
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%endmacro
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; 12. Absolute Indexed With X -- a,x
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%macro addr_aCx_8brni 0
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mov cx,[esi]
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mov bl,[xdb]
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add cx,[xx]
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jnc .npb
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inc bl
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.npb
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call dword near [memtabler8+ebx*4]
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%endmacro
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%macro addr_aCx_16brni 0
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mov cx,[esi]
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mov bl,[xdb]
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add cx,[xx]
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jnc .npb
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inc bl
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.npb
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call dword near [memtabler16+ebx*4]
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%endmacro
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; 13. Absolute Indexed With Y -- a,y
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%macro addr_aCy_8brni 0
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mov cx,[esi]
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mov bl,[xdb]
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add cx,[xy]
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jnc .npb
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inc bl
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.npb
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call dword near [memtabler8+ebx*4]
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%endmacro
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%macro addr_aCy_16brni 0
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mov cx,[esi]
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mov bl,[xdb]
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add cx,[xy]
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jnc .npb
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inc bl
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.npb
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call dword near [memtabler16+ebx*4]
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%endmacro
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; 14. Absolute Long Indexed With X -- al,x
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%macro addr_alCx_8brni 0
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mov cx,[esi]
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mov bl,[esi+2]
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add cx,[xx]
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jnc .npb
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inc bl
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.npb
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call dword near [memtabler8+ebx*4]
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%endmacro
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%macro addr_alCx_16brni 0
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mov cx,[esi]
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mov bl,[esi+2]
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add cx,[xx]
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jnc .npb
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inc bl
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.npb
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call dword near [memtabler16+ebx*4]
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%endmacro
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; 18. Direct Indirect -- (d)
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; ___________________
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; Instruction: | opcode | offset |
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; ~~~~~~~~~~~~~~~~~~~
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; | Direct Register |
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; + | offset |
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; ---------------------
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; | 00 | direct address |
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; then:
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; | 00 | (direct address) |
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; + | DB |
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; -------------------------------
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; Address: | effective address |
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%macro addr_BdB_8brni 0
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mov bl,[esi]
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mov ecx,[xd]
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call dword near [DPageR16]
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mov cx,ax
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mov bl,[xdb]
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call dword near [memtabler8+ebx*4]
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%endmacro
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%macro addr_BdB_16brni 0
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mov bl,[esi]
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mov ecx,[xd]
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call dword near [DPageR16]
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mov cx,ax
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mov bl,[xdb]
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call dword near [memtabler16+ebx*4]
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%endmacro
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; 19. Direct Indirect Long -- [d]
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; ___________________
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; Instruction: | opcode | offset |
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; ~~~~~~~~~~~~~~~~~~~
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; | Direct Register |
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; + | offset |
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; ---------------------
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; | 00 | direct address |
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; then:
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; -------------------------------
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; Address: | (direct address) |
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%macro addr_LdL_8brni 0
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mov bl,[esi]
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mov ecx,[xd]
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add cx,bx
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push cx
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call membank0r16
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pop cx
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add cx,2
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push ax
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call membank0r8
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mov bl,al
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pop ax
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mov cx,ax
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call dword near [memtabler8+ebx*4]
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%endmacro
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%macro addr_LdL_16brni 0
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mov bl,[esi]
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mov ecx,[xd]
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add cx,bx
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push cx
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call membank0r16
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pop cx
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add cx,2
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push ax
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call membank0r8
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mov bl,al
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pop ax
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mov cx,ax
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call dword near [memtabler16+ebx*4]
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%endmacro
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; 22. Stack Relative -- d,s
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%macro addr_dCs_8brni 0
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mov bl,[esi]
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mov cx,[xs]
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add cx,bx
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call membank0r8
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%endmacro
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%macro addr_dCs_16brni 0
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mov bl,[esi]
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mov cx,[xs]
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add cx,bx
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call membank0r16
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%endmacro
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; 23. Stack Relative Indirect Indexed -- (d,s),y (TESTED)
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%macro addr_BdCsBCy_8brni 0
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mov bl,[esi]
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mov cx,[xs]
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add cx,bx
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call membank0r16
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mov cx,ax
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mov bl,[xdb]
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add cx,[xy]
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jnc .npb
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inc bl
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.npb
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call dword near [memtabler8+ebx*4]
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%endmacro
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%macro addr_BdCsBCy_16brni 0
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mov bl,[esi]
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mov cx,[xs]
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add cx,bx
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call membank0r16
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mov cx,ax
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mov bl,[xdb]
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add cx,[xy]
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jnc .npb
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inc bl
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.npb
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call dword near [memtabler16+ebx*4]
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%endmacro
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