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alexbevi
GitHub Repository: alexbevi/BizHawk
 Path: blob/master/wonderswan/eeprom.cpp
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/* Cygne

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*

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* Copyright notice for this file:

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*  Copyright (C) 2002 Dox [email protected]

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*

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* This program is free software; you can redistribute it and/or modify

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* it under the terms of the GNU General Public License as published by

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* the Free Software Foundation; either version 2 of the License, or

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* (at your option) any later 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

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*/

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#include "system.h"

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#include <ctype.h>

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#include <cstring>

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namespace MDFN_IEN_WSWAN

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{

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	static const uint8 iEEPROM_Init[0x400] = 

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	{

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		255,255,255,255,255,255,192,255,0,0,0,0,

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		0,0,0,0,0,0,0,0,0,0,0,0,

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		0,0,127,0,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,0,0,0,0,0,0,

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		0,0,0,0,0,0,0,0,0,0,0,0,

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		0,0,0,0,0,0,0,0,0,0,0,0,

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		0,0,0,0,0,0,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255, 

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		0,252,255,1,255,253,255,253,255,253,255,253,

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		255,253,255,253,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		0,0,3,3,0,0,0,64,128,0,0,0,

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		0,0,0,0,0,0,0,0,0,0,0,0,

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		0,0,0,0,0,0,0,0,0,0,0,0,

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		0,0,0,0,0,0,0,0,0,0,0,0,

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		135,5,140,9,5,12,139,12,144,0,0,2,

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		0,76,165,0,128,0,0,0,255,127,255,127,

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		255,127,255,127,255,127,255,127,255,127,255,127,

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		255,127,255,127,255,127,255,127,255,127,255,127,

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		255,127,255,127,255,127,255,127,255,127,255,127,

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		255,127,255,127,255,127,255,127,255,127,255,127,

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		255,127,255,127,255,127,255,127,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		0,0,6,6,6,6,6,0,0,0,0,0,

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		1,128,15,0,1,1,1,15,0,0,0,0,

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		0,0,0,0,0,0,0,0,0,0,0,0,

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		0,0,0,0,0,0,0,0,0,0,0,0,

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		0,0,0,0,0,0,0,0,0,0,0,0,

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		0,0,0,0,0,0,0,0,0,0,0,0,

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		0,0,0,0,0,0,0,0,0,0,0,0,

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		0,0,0,0,0,0,0,0,0,0,0,0,

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		'C'-54,'Y'-54,'G'-54,'N'-54,'E'-54,0,0,0,0,0,0,0,0,0,0,

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		0,32,1,1,33,1,4,0,1,

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		0,152,60,127,74,1,53,1,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255,255,255,255,255,255,255,255,255,

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		255,255,255,255

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	};

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	uint8 EEPROM::Read(uint32 A)

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	{

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		switch(A)

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		{

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		default: Debug::printf("Read: %04x\n", A); break;

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		case 0xBA: return(iEEPROM[(iEEPROM_Address << 1) & 0x3FF]);

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		case 0xBB: return(iEEPROM[((iEEPROM_Address << 1) | 1) & 0x3FF]);

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		case 0xBC: return(iEEPROM_Address >> 0);

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		case 0xBD: return(iEEPROM_Address >> 8);

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		case 0xBE:

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			if(iEEPROM_Command & 0x20) return iEEPROM_Command|2;

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			if(iEEPROM_Command & 0x10) return iEEPROM_Command|1;

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			return iEEPROM_Command | 3;

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		case 0xC4: return(wsEEPROM[(EEPROM_Address << 1) & (eeprom_size - 1)]);

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		case 0xC5: return(wsEEPROM[((EEPROM_Address << 1) | 1) & (eeprom_size - 1)]);

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		case 0xC6: return(EEPROM_Address >> 0);

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		case 0xC7: return(EEPROM_Address >> 8);

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		case 0xC8: if(EEPROM_Command & 0x20) return EEPROM_Command|2;

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			if(EEPROM_Command & 0x10) return EEPROM_Command|1;

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			return EEPROM_Command | 3;

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		}

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		return(0);

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	}

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	void EEPROM::Write(uint32 A, uint8 V)

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	{

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		switch(A)

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		{

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		case 0xBA: iEEPROM[(iEEPROM_Address << 1) & 0x3FF] = V; break;

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		case 0xBB: iEEPROM[((iEEPROM_Address << 1) | 1) & 0x3FF] = V; break;

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		case 0xBC: iEEPROM_Address &= 0xFF00; iEEPROM_Address |= (V << 0); break;

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		case 0xBD: iEEPROM_Address &= 0x00FF; iEEPROM_Address |= (V << 8); break;

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		case 0xBE: iEEPROM_Command = V; break;

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		case 0xC4: wsEEPROM[(EEPROM_Address << 1) & (eeprom_size - 1)] = V; break;

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		case 0xC5: wsEEPROM[((EEPROM_Address << 1) | 1) & (eeprom_size - 1)] = V; break;

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		case 0xC6: EEPROM_Address &= 0xFF00; EEPROM_Address |= (V << 0); break;

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		case 0xC7: EEPROM_Address &= 0x00FF; EEPROM_Address |= (V << 8); break;

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		case 0xC8: EEPROM_Command = V; break;

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		}

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	}

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	void EEPROM::Reset()

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	{

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		iEEPROM_Command = EEPROM_Command = 0;

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		iEEPROM_Address = EEPROM_Address = 0;

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	}

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	void EEPROM::Init(const char *Name, const uint16 BYear, const uint8 BMonth, const uint8 BDay, const uint8 Sex, const uint8 Blood)

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	{

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		std::memset(wsEEPROM, 0, 2048);

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		std::memcpy(iEEPROM, iEEPROM_Init, 0x400);

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		for(unsigned int x = 0; x < 16; x++)

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		{

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			uint8 zechar = 0;

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			if(x < std::strlen(Name))

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			{

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				char tc = toupper(Name[x]);

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				if(tc == ' ') zechar = 0;

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				else if(tc >= '0' && tc <= '9') zechar = tc - '0' + 0x1;

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				else if(tc >= 'A' && tc <= 'Z') zechar = tc - 'A' + 0xB;

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				else if(tc >= 'a' && tc <= 'z') zechar = tc - 'a' + 0xB + 26;

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			}

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			iEEPROM[0x360 + x] = zechar;

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		}

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#define  mBCD16(value) ( (((((value)%100) / 10) <<4)|((value)%10)) | ((((((value / 100)%100) / 10) <<4)|((value / 100)%10))<<8) )

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#define INT16_TO_BCD(A)  ((((((A) % 100) / 10) * 16 + ((A) % 10))) | (((((((A) / 100) % 100) / 10) * 16 + (((A) / 100) % 10))) << 8))   // convert INT16 --> BCD

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		uint16 bcd_BYear = INT16_TO_BCD(BYear);

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		iEEPROM[0x370] = (bcd_BYear >> 8) & 0xFF;

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		iEEPROM[0x371] = (bcd_BYear >> 0) & 0xFF;

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		iEEPROM[0x372] = mBCD(BMonth);

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		iEEPROM[0x373] = mBCD(BDay);

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		iEEPROM[0x374] = Sex;

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		iEEPROM[0x375] = Blood;

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	}

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	SYNCFUNC(EEPROM)

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	{

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		NSS(iEEPROM_Command);

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		NSS(EEPROM_Command);

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		NSS(iEEPROM_Address);

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		NSS(EEPROM_Address);

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		NSS(eeprom_size);

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		NSS(iEEPROM);

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		NSS(wsEEPROM);

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	}

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}

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