62 lines
4.0 KiB
C++
62 lines
4.0 KiB
C++
/*----------------------------------------------------------------------*/
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/* */
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/* NES Mapeers */
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/* Norix */
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/* written 2000/02/05 */
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/* last modify ----/--/-- */
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/*----------------------------------------------------------------------*/
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/*--------------[ INCLUDE ]-------------------------------*/
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "DebugOut.h"
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#include "typedef.h"
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#include "macro.h"
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#include "nes.h"
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#include "mmu.h"
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#include "mapper.h"
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/*--------------[ DEFINE ]-------------------------------*/
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/*--------------[ EXTERNAL PROGRAM ]-------------------------------*/
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/*--------------[ EXTERNAL WORK ]-------------------------------*/
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/*--------------[ WORK ]-------------------------------*/
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/*--------------[ PROTOTYPE ]-------------------------------*/
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/*--------------[ CONST ]-------------------------------*/
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/*--------------[ PROGRAM ]-------------------------------*/
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//////////////////////////////////////////////////////////////////////////
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// Based class implement
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//////////////////////////////////////////////////////////////////////////
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Mapper::Mapper( NES* parent ) : nes(parent)
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{
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}
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Mapper::~Mapper()
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{
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}
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// $4100-$7FFF Lower Memory read
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BYTE Mapper::ReadLow( WORD addr )
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{
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// $6000-$7FFF WRAM
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if( addr >= 0x6000 && addr <= 0x7FFF ) {
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return CPU_MEM_BANK[addr>>13][addr&0x1FFF];
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}
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return (BYTE)(addr>>8);
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}
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// $4100-$7FFF Lower Memory write
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void Mapper::WriteLow( WORD addr, BYTE data )
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{
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// $6000-$7FFF WRAM
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if( addr >= 0x6000 && addr <= 0x7FFF ) {
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CPU_MEM_BANK[addr>>13][addr&0x1FFF] = data;
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}
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}
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