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Correct ROM loading issue discovered while resurrecting NES support.

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Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
This commit is contained in:
Adrian Conlon 2018-12-29 19:06:24 +00:00
parent 2a223a5acd
commit 722888ae66
1 changed files with 8 additions and 1 deletions
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9
src/Rom.cpp
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@ -59,9 +59,16 @@ int EightBit::Rom::load(const std::string& path, const int writeOffset, const in
}
int EightBit::Rom::load(const std::vector<uint8_t>& bytes, const int writeOffset, const int readOffset, int limit) {
if (limit < 0)
limit = bytes.size() - readOffset;
std::copy(bytes.cbegin() + readOffset, bytes.cbegin() + limit, m_bytes.begin() + writeOffset);
const size_t extent = limit + writeOffset;
if (m_bytes.size() < extent)
m_bytes.resize(extent);
std::copy(bytes.cbegin() + readOffset, bytes.cbegin() + readOffset + limit, m_bytes.begin() + writeOffset);
return limit;
}