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The CPC now accepts disks only if it can make sense of them.

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This commit is contained in:
Thomas Harte 2018-03-22 18:52:43 -04:00
parent ab98189d25
commit 93e85c5c4a
1 changed files with 37 additions and 23 deletions
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38
Analyser/Static/AmstradCPC/StaticAnalyser.cpp
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@ -158,7 +158,7 @@ static void InspectCatalogue(
static bool CheckBootSector(const std::shared_ptr<Storage::Disk::Disk> &disk, const std::unique_ptr<Analyser::Static::AmstradCPC::Target> &target) {
Storage::Encodings::MFM::Parser parser(true, disk);
Storage::Encodings::MFM::Sector *boot_sector = parser.get_sector(0, 0, 0x41);
if(boot_sector != nullptr && !boot_sector->samples.empty()) {
if(boot_sector != nullptr && !boot_sector->samples.empty() && boot_sector->samples[0].size() == 512) {
// Check that the first 64 bytes of the sector aren't identical; if they are then probably
// this disk was formatted and the filler byte never replaced.
bool matched = true;
@ -183,20 +183,20 @@ void Analyser::Static::AmstradCPC::AddTargets(const Media &media, std::vector<st
std::unique_ptr<Target> target(new Target);
target->machine = Machine::AmstradCPC;
target->confidence = 0.5;
target->media.disks = media.disks;
target->media.tapes = media.tapes;
target->media.cartridges = media.cartridges;
target->model = Target::Model::CPC6128;
if(!target->media.tapes.empty()) {
if(!media.tapes.empty()) {
// TODO: which of these are actually potentially CPC tapes?
target->media.tapes = media.tapes;
// Ugliness flows here: assume the CPC isn't smart enough to pause between pressing
// enter and responding to the follow-on prompt to press a key, so just type for
// a while. Yuck!
target->loading_command = "|tape\nrun\"\n1234567890";
}
if(!target->media.disks.empty()) {
if(!media.disks.empty()) {
Storage::Disk::CPM::ParameterBlock data_format;
data_format.sectors_per_track = 9;
data_format.tracks = 40;
@ -205,11 +205,6 @@ void Analyser::Static::AmstradCPC::AddTargets(const Media &media, std::vector<st
data_format.catalogue_allocation_bitmap = 0xc000;
data_format.reserved_tracks = 0;
std::unique_ptr<Storage::Disk::CPM::Catalogue> data_catalogue = Storage::Disk::CPM::GetCatalogue(target->media.disks.front(), data_format);
if(data_catalogue) {
InspectCatalogue(*data_catalogue, target);
} else {
if(!CheckBootSector(target->media.disks.front(), target)) {
Storage::Disk::CPM::ParameterBlock system_format;
system_format.sectors_per_track = 9;
system_format.tracks = 40;
@ -218,13 +213,32 @@ void Analyser::Static::AmstradCPC::AddTargets(const Media &media, std::vector<st
system_format.catalogue_allocation_bitmap = 0xc000;
system_format.reserved_tracks = 2;
for(const auto &disk: media.disks) {
// Check for an ordinary catalogue.
std::unique_ptr<Storage::Disk::CPM::Catalogue> data_catalogue = Storage::Disk::CPM::GetCatalogue(disk, data_format);
if(data_catalogue) {
InspectCatalogue(*data_catalogue, target);
target->media.disks.push_back(disk);
continue;
}
// Failing that check for a boot sector.
if(CheckBootSector(target->media.disks.front(), target)) {
target->media.disks.push_back(disk);
continue;
}
// Failing that check for a system catalogue.
std::unique_ptr<Storage::Disk::CPM::Catalogue> system_catalogue = Storage::Disk::CPM::GetCatalogue(target->media.disks.front(), system_format);
if(system_catalogue) {
InspectCatalogue(*system_catalogue, target);
}
target->media.disks.push_back(disk);
continue;
}
}
}
// If any media survived, add the target.
if(!target->media.empty())
destination.push_back(std::move(target));
}