trunk/src/devices/cpu/se3208/se3208.cpp
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| 38 | 38 | //Precompute the instruction decoding in a big table |
| 39 | 39 | #define INST(a) void se3208_device::a(UINT16 Opcode) |
| 40 | 40 | |
| 41 | // officeye and donghaer perform unaligned DWORD accesses, allowing them to happen causes the games to malfunction. |
| 42 | // are such accesses simply illegal, be handled in a different way, or simply not be happening in the first place? |
| 43 | #define ALLOW_UNALIGNED_DWORD_ACCESS 0 |
| 41 | 44 | |
| 42 | 45 | const device_type SE3208 = &device_creator<se3208_device>; |
| 43 | 46 | |
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| 58 | 61 | case 1: |
| 59 | 62 | case 2: |
| 60 | 63 | case 3: |
| 61 | | // printf("dword read unaligned %d\n", address & 3); |
| 64 | printf("%08x: dword READ unaligned %d\n", m_PC, address); |
| 65 | #if ALLOW_UNALIGNED_DWORD_ACCESS |
| 62 | 66 | return space.read_byte(address) | space.read_byte(address + 1) << 8 | space.read_byte(address + 2) << 16 | space.read_byte(address + 3) << 24; |
| 63 | | |
| 67 | #else |
| 68 | return 0; |
| 69 | #endif |
| 64 | 70 | } |
| 65 | 71 | |
| 66 | 72 | return 0; |
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| 85 | 91 | case 1: |
| 86 | 92 | case 2: |
| 87 | 93 | case 3: |
| 94 | #if ALLOW_UNALIGNED_DWORD_ACCESS |
| 88 | 95 | space.write_byte(address, data & 0xff); |
| 89 | 96 | space.write_byte(address + 1, (data >> 8) & 0xff); |
| 90 | 97 | space.write_byte(address + 2, (data >> 16) & 0xff); |
| 91 | 98 | space.write_byte(address + 3, (data >> 24) & 0xff); |
| 92 | | // printf("dword write unaligned %d\n", address & 3); |
| 99 | #endif |
| 100 | printf("%08x: dword WRITE unaligned %d\n", m_PC, address); |
| 101 | |
| 93 | 102 | break; |
| 94 | 103 | } |
| 95 | 104 | |