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Switched to a voting method for classifying 8kb ROMs.

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This commit is contained in:
Thomas Harte 2017-03-12 15:36:01 -04:00
parent 78213f1e95
commit af9b7fbc30
1 changed files with 13 additions and 7 deletions
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20
StaticAnalyser/Atari/StaticAnalyser.cpp
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@ -92,6 +92,9 @@ static void DeterminePagingFor2kCartridge(StaticAnalyser::Target &target, const
static void DeterminePagingFor8kCartridge(StaticAnalyser::Target &target, const Storage::Cartridge::Cartridge::Segment &segment, const std::vector<StaticAnalyser::MOS6502::Disassembly> &disassemblies)
{
// make an assumption that this is the Atari paging model
target.atari.paging_model = StaticAnalyser::Atari2600PagingModel::Atari8k;
std::set<uint16_t> internal_accesses;
std::set<uint16_t> external_stores;
for(const StaticAnalyser::MOS6502::Disassembly &disassembly : disassemblies)
@ -102,16 +105,19 @@ static void DeterminePagingFor8kCartridge(StaticAnalyser::Target &target, const
external_stores.insert(disassembly.external_stores.begin(), disassembly.external_stores.end());
}
bool looks_like_atari = false;
bool looks_like_parker_bros = false;
int atari_access_count = 0;
int parker_access_count = 0;
int tigervision_access_count = 0;
for(uint16_t address : internal_accesses)
{
looks_like_atari |= ((address & 0x1fff) >= 0x1ff8) && ((address & 0x1fff) < 0x1ffa);
looks_like_parker_bros |= ((address & 0x1fff) >= 0x1fe0) && ((address & 0x1fff) < 0x1fe8);
uint16_t masked_address = address & 0x1fff;
atari_access_count += masked_address >= 0x1ff8 && masked_address < 0x1ffa;
parker_access_count += masked_address >= 0x1fe0 && masked_address < 0x1ff8;
tigervision_access_count += address == 0x3f;
}
if(looks_like_parker_bros) target.atari.paging_model = StaticAnalyser::Atari2600PagingModel::ParkerBros;
if(looks_like_atari) target.atari.paging_model = StaticAnalyser::Atari2600PagingModel::Atari8k;
if(parker_access_count > atari_access_count) target.atari.paging_model = StaticAnalyser::Atari2600PagingModel::ParkerBros;
else if(tigervision_access_count > atari_access_count) target.atari.paging_model = StaticAnalyser::Atari2600PagingModel::Tigervision;
}
static void DeterminePagingForCartridge(StaticAnalyser::Target &target, const Storage::Cartridge::Cartridge::Segment &segment)
@ -163,7 +169,7 @@ static void DeterminePagingForCartridge(StaticAnalyser::Target &target, const St
// check for a Super Chip. Atari ROM images [almost] always have the same value stored over RAM
// regions.
if(target.atari.paging_model != StaticAnalyser::Atari2600PagingModel::CBSRamPlus)
if(target.atari.paging_model != StaticAnalyser::Atari2600PagingModel::CBSRamPlus && target.atari.paging_model != StaticAnalyser::Atari2600PagingModel::MNetwork)
{
bool has_superchip = true;
for(size_t address = 0; address < 256; address++)