diff options
| -rw-r--r-- | xband.c | 9 | ||||
| -rw-r--r-- | xband.h | 2 |
2 files changed, 9 insertions, 2 deletions
@@ -47,7 +47,7 @@ static void update_control(genesis_context *gen, uint8_t value) if (value & BIT_ROM_HI) { gen->m68k->mem_pointers[0] = (uint16_t *)gen->save_storage; gen->m68k->mem_pointers[1] = NULL; - gen->m68k->mem_pointers[2] = x->cart_space; + gen->m68k->mem_pointers[2] = gen->cart; gen->m68k->mem_pointers[3] = x->cart_space - 0x100000; } else { gen->m68k->mem_pointers[0] = x->cart_space; @@ -182,6 +182,7 @@ static uint8_t xband_reg_read_b(uint32_t address, void *context) if (address < 0x3BFE00) { uint32_t offset = (address - 0x3BC001) / 2; if (offset < XBAND_REGS) { + printf("Regsister read: %X\n", address); return x->regs[offset]; } else { printf("Unhandled register read from address %X\n", address); @@ -248,6 +249,12 @@ rom_info xband_configure_rom(tern_node *rom_db, void *rom, uint32_t rom_size, vo if (lock_on && lock_on_size >= 0x200) { memcpy(x->cart_space + 0x80, ((uint16_t *)lock_on) + 0x80, 0x100); } + //observed power on values + memset(x->regs, 0x5D, sizeof(x->regs)); + x->regs[0x7C] = 0; + x->regs[0x7D] = 0x80; + x->regs[0xB4] = 0x7F; + byteswap_rom(0x400000, x->cart_space); info.map_chunks = base_chunks + 5; @@ -2,7 +2,7 @@ #define XBAND_H_ #include <stdint.h> -#define XBAND_REGS 0xB6 +#define XBAND_REGS 0xE0 typedef struct { uint16_t cart_space[0x200000]; |