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Fixed to allow loading of ROMs less than 1kb in size.

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This commit is contained in:
Thomas Harte 2015-08-17 00:34:01 -04:00
parent 083b678785
commit a33d31d02a
1 changed files with 10 additions and 1 deletions
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11
Machines/Atari2600.cpp
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@ -568,8 +568,17 @@ void Machine::set_rom(size_t length, const uint8_t *data)
while(_rom_size < length && _rom_size < 32768) _rom_size <<= 1; while(_rom_size < length && _rom_size < 32768) _rom_size <<= 1;
delete[] _rom; delete[] _rom;
_rom = new uint8_t[_rom_size]; _rom = new uint8_t[_rom_size];
memcpy(_rom, data, std::min(_rom_size, length));
size_t offset = 0;
const size_t copy_step = std::min(_rom_size, length);
while(offset < _rom_size)
{
size_t copy_length = std::min(copy_step, _rom_size - offset);
memcpy(&_rom[offset], data, copy_length);
offset += copy_length;
}
size_t romMask = _rom_size - 1; size_t romMask = _rom_size - 1;
_romPages[0] = _rom; _romPages[0] = _rom;