(mapper) Cleanup Mapper 164
This commit is contained in:
retro-wertz
303
src/boards/164.c
303
src/boards/164.c
@@ -41,301 +41,6 @@ static SFORMAT StateRegs[] =
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{ 0 }
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};
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static int16 step_size[49] = {
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16, 17, 19, 21, 23, 25, 28, 31, 34, 37,
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41, 45, 50, 55, 60, 66, 73, 80, 88, 97,
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107, 118, 130, 143, 157, 173, 190, 209, 230, 253,
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279, 307, 337, 371, 408, 449, 494, 544, 598, 658,
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724, 796, 876, 963, 1060, 1166, 1282, 1411, 1552
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}; //49 items
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static int32 step_adj[16] = { -1, -1, -1, -1, 2, 5, 7, 9, -1, -1, -1, -1, 2, 5, 7, 9 };
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//decode stuff
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static int32 jedi_table[16 * 49];
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static int32 acc = 0; //ADPCM accumulator, initial condition must be 0
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static int32 decstep = 0; //ADPCM decoding step, initial condition must be 0
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static void jedi_table_init() {
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int step, nib;
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for (step = 0; step < 49; step++) {
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for (nib = 0; nib < 16; nib++) {
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int value = (2 * (nib & 0x07) + 1) * step_size[step] / 8;
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jedi_table[step * 16 + nib] = ((nib & 0x08) != 0) ? -value : value;
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}
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}
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}
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static uint8 decode(uint8 code) {
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acc += jedi_table[decstep + code];
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if ((acc & ~0x7ff) != 0) // acc is > 2047
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acc |= ~0xfff;
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else acc &= 0xfff;
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decstep += step_adj[code & 7] * 16;
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if (decstep < 0) decstep = 0;
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if (decstep > 48 * 16) decstep = 48 * 16;
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return (acc >> 8) & 0xff;
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}
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/*
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const EEPROM_interface eeprom_interface. =
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{
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9, // address bits 9
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8, // data bits 8
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"*110", // read 1 10 aaaaaaaaa
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"*101", // write 1 01 aaaaaaaaa dddddddd
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"*10000xxxxxxx", // lock 1 00 00xxxxxxx
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"*10011xxxxxxx", // unlock 1 00 11xxxxxxx
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1,
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5
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};
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static const EEPROM_interface *intf;
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static int serial_count = 0;
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static u8 serial_buffer[SERIAL_BUFFER_LENGTH];
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static int eeprom_data_bits;
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static int eeprom_clock_count;
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static int eeprom_read_address;
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static u8 *eeprom_data;
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static int latch = 0;
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static int locked = 1;
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static int sending = 0;
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static int reset_line = ASSERT_LINE;
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static int clock_line = ASSERT_LINE;
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static int reset_delay;
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void EEPROM_Init(u8 *data, u8 bit)
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{
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eeprom_data = data;
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if(bit == 8)
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intf = &eeprom_interface_93C46_8;
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else
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intf = &eeprom_interface_93C46_16;
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}
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u8 *EEPROM_GetData()
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{
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return eeprom_data;
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}
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static int EEPROM_command_match(const char *buf, const char *cmd, int len)
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{
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if ( cmd == 0 ) return 0;
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if ( len == 0 ) return 0;
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for (;len>0;)
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{
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char b = *buf;
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char c = *cmd;
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if ((b==0) || (c==0))
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return (b==c);
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switch ( c )
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{
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case '0':
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case '1':
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if (b != c) return 0;
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case 'X':
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case 'x':
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buf++;
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len--;
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cmd++;
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break;
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case '*':
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c = cmd[1];
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switch( c )
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{
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case '0':
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case '1':
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if (b == c) { cmd++; }
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else { buf++; len--; }
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break;
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default: return 0;
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}
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}
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}
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return (*cmd==0);
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}
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static void EEPROM_write(int bit)
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{
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if (serial_count >= SERIAL_BUFFER_LENGTH-1)
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{
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return;
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}
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serial_buffer[serial_count++] = (bit ? '1' : '0');
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serial_buffer[serial_count] = 0;
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if ( (serial_count > intf->address_bits) &&
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EEPROM_command_match((char*)serial_buffer,intf->cmd_read,(int)strlen((char*)serial_buffer)-intf->address_bits) )
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{
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int i,address;
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address = 0;
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for (i = serial_count-intf->address_bits;i < serial_count;i++)
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{
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address <<= 1;
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if (serial_buffer[i] == '1') address |= 1;
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}
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if (intf->data_bits == 16)
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eeprom_data_bits = (eeprom_data[2*address+0] << 8) + eeprom_data[2*address+1];
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else
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eeprom_data_bits = eeprom_data[address];
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eeprom_read_address = address;
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eeprom_clock_count = 0;
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sending = 1;
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serial_count = 0;
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}
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else if ( (serial_count > intf->address_bits) &&
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EEPROM_command_match((char*)serial_buffer,intf->cmd_erase,(int)strlen((char*)serial_buffer)-intf->address_bits) )
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{
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int i,address;
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address = 0;
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for (i = serial_count-intf->address_bits;i < serial_count;i++)
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{
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address <<= 1;
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if (serial_buffer[i] == '1') address |= 1;
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}
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if (locked == 0)
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{
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if (intf->data_bits == 16)
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{
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eeprom_data[2*address+0] = 0x00;
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eeprom_data[2*address+1] = 0x00;
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}
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else
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eeprom_data[address] = 0x00;
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}
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else
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serial_count = 0;
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}
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else if ( (serial_count > (intf->address_bits + intf->data_bits)) &&
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EEPROM_command_match((char*)serial_buffer,intf->cmd_write,(int)strlen((char*)serial_buffer)-(intf->address_bits + intf->data_bits)) )
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{
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int i,address,data;
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address = 0;
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for (i = serial_count-intf->data_bits-intf->address_bits;i < (serial_count-intf->data_bits);i++)
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{
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address <<= 1;
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if (serial_buffer[i] == '1') address |= 1;
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}
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data = 0;
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for (i = serial_count-intf->data_bits;i < serial_count;i++)
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{
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data <<= 1;
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if (serial_buffer[i] == '1') data |= 1;
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}
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if (locked == 0)
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{
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if (intf->data_bits == 16)
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{
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eeprom_data[2*address+0] = data >> 8;
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eeprom_data[2*address+1] = data & 0xff;
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}
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else
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eeprom_data[address] = data;
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}
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else
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serial_count = 0;
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}
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else if ( EEPROM_command_match((char*)serial_buffer,intf->cmd_lock,(int)strlen((char*)serial_buffer)) )
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{
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locked = 1;
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serial_count = 0;
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}
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else if ( EEPROM_command_match((char*)serial_buffer,intf->cmd_unlock,(int)strlen((char*)serial_buffer)) )
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{
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locked = 0;
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serial_count = 0;
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}
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}
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static void EEPROM_reset()
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{
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serial_count = 0;
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sending = 0;
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reset_delay = intf->reset_delay;
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}
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void EEPROM_set_cs_line(int state)
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{
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reset_line = state;
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if (reset_line != CLEAR_LINE)
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EEPROM_reset();
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}
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void EEPROM_set_clock_line(int state)
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{
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if (state == PULSE_LINE || (clock_line == CLEAR_LINE && state != CLEAR_LINE))
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{
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if (reset_line == CLEAR_LINE)
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{
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if (sending)
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{
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if (eeprom_clock_count == intf->data_bits)
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{
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if(intf->enable_multi_read)
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{
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eeprom_read_address = (eeprom_read_address + 1) & ((1 << intf->address_bits) - 1);
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if (intf->data_bits == 16)
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eeprom_data_bits = (eeprom_data[2*eeprom_read_address+0] << 8) + eeprom_data[2*eeprom_read_address+1];
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else
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eeprom_data_bits = eeprom_data[eeprom_read_address];
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eeprom_clock_count = 0;
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}
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else
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{
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sending = 0;
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}
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}
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eeprom_data_bits = (eeprom_data_bits << 1) | 1;
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eeprom_clock_count++;
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}
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else
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EEPROM_write(latch);
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}
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}
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clock_line = state;
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}
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void EEPROM_write_bit(int bit)
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{
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latch = bit;
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}
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int EEPROM_read_bit(void)
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{
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int res;
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if (sending)
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res = (eeprom_data_bits >> intf->data_bits) & 1;
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else
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{
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if (reset_delay > 0)
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{
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reset_delay--;
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res = 0;
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}
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else
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res = 1;
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}
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return res;
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}
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*/
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static void Sync(void) {
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setprg8r(0x10, 0x6000, 0);
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setprg32(0x8000, (reg[0] << 4) | (reg[1] & 0xF));
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@@ -436,10 +141,10 @@ static DECLFW(Write2) {
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setprg32(0x8000, 3);
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else
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switch (A & 0x7300) {
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case 0x5200: /*FCEU_printf("%04x %02x (5000 = %02x)\n", A, V, reg[1]); */ reg[0] = V; WSync(); break;
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case 0x5200: reg[0] = V; WSync(); break;
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case 0x5000: reg[1] = V; WSync(); if (!(reg[1] & 0x80) && (scanline < 128)) setchr8(0); /* setchr8(0); */ break;
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case 0x5300: /*FCEU_printf("%04x %02x (5000 = %02x)\n", A, V, reg[1]);*/ reg[2] = V; break;
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case 0x5100: /*FCEU_printf("%04x %02x (5000 = %02x)\n", A, V, reg[1]);*/ reg[3] = V; /*pcmwrite(0x4011, (decode(reg[0]) & 0xf) << 3);*/ WSync(); break;
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case 0x5300: reg[2] = V; break;
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case 0x5100: reg[3] = V; WSync(); break;
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}
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}
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@@ -461,8 +166,6 @@ void Mapper163_Init(CartInfo *info) {
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WSync = Sync;
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GameHBIRQHook = M163HB;
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// jedi_table_init();
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WRAMSIZE = 8192;
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WRAM = (uint8*)FCEU_gmalloc(WRAMSIZE);
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SetupCartPRGMapping(0x10, WRAM, WRAMSIZE, 1);
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