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Merge pull request #374 from TomHarte/HFEFixup

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Corrects two errors in all-machine HFE offering.
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Thomas Harte 2018-03-22 20:24:24 -04:00 committed by GitHub
commit 2a320fdf56
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2 changed files with 12 additions and 12 deletions
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22
Analyser/Static/Commodore/Disk.cpp
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@ -71,19 +71,19 @@ class CommodoreGCRParser: public Storage::Disk::Controller {
bit_count_++;
}
unsigned int proceed_to_next_block() {
unsigned int proceed_to_next_block(int max_index_count) {
// find GCR lead-in
proceed_to_shift_value(0x3ff);
if(shift_register_ != 0x3ff) return 0xff;
// find end of lead-in
while(shift_register_ == 0x3ff && index_count_ < 2) {
while(shift_register_ == 0x3ff && index_count_ < max_index_count) {
run_for(Cycles(1));
}
// continue for a further nine bits
bit_count_ = 0;
while(bit_count_ < 9 && index_count_ < 2) {
while(bit_count_ < 9 && index_count_ < max_index_count) {
run_for(Cycles(1));
}
@ -97,8 +97,8 @@ class CommodoreGCRParser: public Storage::Disk::Controller {
}
void proceed_to_shift_value(unsigned int shift_value) {
index_count_ = 0;
while(shift_register_ != shift_value && index_count_ < 2) {
const int max_index_count = index_count_ + 2;
while(shift_register_ != shift_value && index_count_ < max_index_count) {
run_for(Cycles(1));
}
}
@ -124,13 +124,13 @@ class CommodoreGCRParser: public Storage::Disk::Controller {
std::shared_ptr<Sector> get_next_sector() {
std::shared_ptr<Sector> sector(new Sector);
index_count_ = 0;
const int max_index_count = index_count_ + 2;
while(index_count_ < 2) {
while(index_count_ < max_index_count) {
// look for a sector header
while(1) {
if(proceed_to_next_block() == 0x08) break;
if(index_count_ >= 2) return nullptr;
if(proceed_to_next_block(max_index_count) == 0x08) break;
if(index_count_ >= max_index_count) return nullptr;
}
// get sector details, skip if this looks malformed
@ -144,8 +144,8 @@ class CommodoreGCRParser: public Storage::Disk::Controller {
// look for the following data
while(1) {
if(proceed_to_next_block() == 0x07) break;
if(index_count_ >= 2) return nullptr;
if(proceed_to_next_block(max_index_count) == 0x07) break;
if(index_count_ >= max_index_count) return nullptr;
}
checksum = 0;

2
Analyser/Static/StaticAnalyser.cpp
View File

@ -103,7 +103,7 @@ static Media GetMediaAndPlatforms(const char *file_name, TargetPlatform::IntType
Format( "hfe",
result.disks,
Disk::DiskImageHolder<Storage::Disk::HFE>,
TargetPlatform::Acorn || TargetPlatform::AmstradCPC | TargetPlatform::Commodore | TargetPlatform::Oric)
TargetPlatform::Acorn | TargetPlatform::AmstradCPC | TargetPlatform::Commodore | TargetPlatform::Oric)
// HFE (TODO: switch to AllDisk once the MSX stops being so greedy)
Format("o", result.tapes, Tape::ZX80O81P, TargetPlatform::ZX8081) // O
Format("p", result.tapes, Tape::ZX80O81P, TargetPlatform::ZX8081) // P