AppleWin/source/z80emu.cpp

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/* Emulador do computador TK3000 //e (Microdigital)
* por F<EFBFBD>bio Belavenuto - Copyright (C) 2004
*
* Adaptado do emulador Applewin por Michael O'Brien
* Part of code is Copyright (C) 2003-2004 Tom Charlesworth
*
* Este arquivo <EFBFBD> distribuido pela Licen<EFBFBD>a P<EFBFBD>blica Geral GNU.
* Veja o arquivo Licenca.txt distribuido com este software.
*
* ESTE SOFTWARE N<EFBFBD>O OFERECE NENHUMA GARANTIA
*
*/
// Emula a CPU Z80
#include "StdAfx.h"
#include "AppleWin.h"
#include "Memory.h"
#include "z80emu.h"
// Variaveis
static int g_uCPMZ80Slot = 0;
BYTE __stdcall CPMZ80_IONull(WORD PC, WORD uAddr, BYTE bWrite, BYTE uValue, ULONG nCyclesLeft)
{
return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
}
BYTE __stdcall CPMZ80_IOWrite(WORD PC, WORD uAddr, BYTE bWrite, BYTE uValue, ULONG nCyclesLeft)
{
if ((uAddr & 0xFF00) == (0xC000 + (g_uCPMZ80Slot << 8)))
g_ActiveCPU = (g_ActiveCPU == CPU_6502) ? CPU_Z80 : CPU_6502;
return IO_Null(PC, uAddr, bWrite, uValue, nCyclesLeft);
}
//===========================================================================
void ConfigureSoftcard(LPBYTE pCxRomPeripheral, UINT uSlot)
{
memset(pCxRomPeripheral + (uSlot << 8), 0xFF, APPLE_SLOT_SIZE);
g_uCPMZ80Slot = uSlot;
RegisterIoHandler(uSlot, CPMZ80_IONull, CPMZ80_IONull, CPMZ80_IONull, CPMZ80_IOWrite, NULL, NULL);
}