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Switch to more efficient copy.

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Thomas Harte 2021-04-25 16:51:07 -04:00
parent 2510064218
commit 205518ba75
1 changed files with 3 additions and 3 deletions
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6
Machines/Sinclair/ZXSpectrum/ZXSpectrum.cpp
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@ -132,9 +132,9 @@ template<Model model> class ConcreteMachine:
// If this is a 48k or 16k machine, remap source data from its original // If this is a 48k or 16k machine, remap source data from its original
// linear form to whatever the banks end up being; otherwise copy as is. // linear form to whatever the banks end up being; otherwise copy as is.
if(model <= Model::FortyEightK) { if(model <= Model::FortyEightK) {
for(size_t c = 0; c < 48*1024 && c < state->ram.size(); c++) { const size_t num_banks = std::min(size_t(48*1024), state->ram.size()) >> 14;
const auto address = c + 0x4000; for(size_t c = 0; c < num_banks; c++) {
write_pointers_[address >> 14][address] = state->ram[c]; memcpy(&write_pointers_[c + 1][(c+1) * 0x4000], &state->ram[c * 0x4000], 0x4000);
} }
} else { } else {
memcpy(ram_.data(), state->ram.data(), std::min(ram_.size(), state->ram.size())); memcpy(ram_.data(), state->ram.data(), std::min(ram_.size(), state->ram.size()));