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[Core/MD] improved I2C EEPROM boards emulation

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EkeEke 2015-10-17 19:25:21 +02:00
parent 1cf6882bb2
commit be2ea378bc
3 changed files with 612 additions and 378 deletions
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915
core/cart_hw/eeprom_i2c.c
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File diff suppressed because it is too large Load Diff

4
core/cart_hw/eeprom_i2c.h
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@ -1,8 +1,8 @@
/****************************************************************************
* Genesis Plus
* I2C Serial EEPROM (24Cxx) support
* I2C Serial EEPROM (24Cxx) boards
*
* Copyright (C) 2007-2013 Eke-Eke (Genesis Plus GX)
* Copyright (C) 2007-2015 Eke-Eke (Genesis Plus GX)
*
* Redistribution and use of this code or any derivative works are permitted
* provided that the following conditions are met:

37
core/cart_hw/md_cart.c
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@ -321,6 +321,9 @@ void md_cart_init(void)
/* ROM is mirrored each 2^k bytes */
cart.mask = size - 1;
/* no special external hardware required by default */
cart.special = 0;
/**********************************************
DEFAULT CARTRIDGE MAPPING
***********************************************/
@ -375,7 +378,7 @@ void md_cart_init(void)
/* external SRAM */
if (sram.on && !sram.custom)
{
/* initialize m68k bus handlers */
/* initialize default memory mapping for SRAM */
m68k.memory_map[sram.start >> 16].base = sram.sram;
m68k.memory_map[sram.start >> 16].read8 = sram_read_byte;
m68k.memory_map[sram.start >> 16].read16 = sram_read_word;
@ -405,38 +408,6 @@ void md_cart_init(void)
m68k.memory_map[0x3a].read16 = svp_read_cell_2;
}
/**********************************************
J-CART
***********************************************/
cart.special = 0;
if ((strstr(rominfo.product,"00000000") && (rominfo.checksum == 0x168b)) || /* Super Skidmarks, Micro Machines Military */
(strstr(rominfo.product,"00000000") && (rominfo.checksum == 0x165e)) || /* Pete Sampras Tennis (1991), Micro Machines 96 */
(strstr(rominfo.product,"00000000") && (rominfo.checksum == 0xcee0)) || /* Micro Machines Military (bad) */
(strstr(rominfo.product,"00000000") && (rominfo.checksum == 0x2c41)) || /* Micro Machines 96 (bad) */
(strstr(rominfo.product,"XXXXXXXX") && (rominfo.checksum == 0xdf39)) || /* Sampras Tennis 96 */
(strstr(rominfo.product,"T-123456") && (rominfo.checksum == 0x1eae)) || /* Sampras Tennis 96 */
(strstr(rominfo.product,"T-120066") && (rominfo.checksum == 0x16a4)) || /* Pete Sampras Tennis (1994)*/
strstr(rominfo.product,"T-120096")) /* Micro Machines 2 */
{
if (cart.romsize <= 0x380000) /* just to be sure (checksum might not be enough) */
{
cart.special |= HW_J_CART;
/* force port 1 setting */
if (input.system[1] != SYSTEM_WAYPLAY)
{
old_system[1] = input.system[1];
input.system[1] = SYSTEM_GAMEPAD;
}
/* extra connectors mapped at $38xxxx or $3Fxxxx */
m68k.memory_map[0x38].read16 = jcart_read;
m68k.memory_map[0x38].write16 = jcart_write;
m68k.memory_map[0x3f].read16 = jcart_read;
m68k.memory_map[0x3f].write16 = jcart_write;
}
}
/**********************************************
LOCK-ON
***********************************************/