6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-11-26 23:52:26 +00:00
Code Issues Projects Releases Wiki Activity

Improved logic for detecting when all sense has been derived from a track to spot any repeated track, not necessarily the first one. That avoids sectors that run over the index hold and obscure the first throwing things.

Browse Source
This commit is contained in:
Thomas Harte 2017-08-17 15:31:53 -04:00
parent 733ee5a5c3
commit 4f8b89772e
1 changed files with 11 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
Storage/Disk/Encodings/MFM.cpp
View File

@ -11,6 +11,8 @@
#include "../PCMTrack.hpp"
#include "../../../NumberTheory/CRC.hpp"
#include <set>
using namespace Storage::Encodings::MFM;
class MFMEncoder: public Encoder {
@ -274,13 +276,20 @@ std::shared_ptr<Sector> Parser::get_sector(uint8_t head, uint8_t track, uint8_t
seek_to_track(track);
int track_index = get_index(head, track, 0);
// Populate the sector cache if it's not already populated.
// Populate the sector cache if it's not already populated by asking for sectors unless and until
// one is returned that has already been seen.
if(decoded_tracks_.find(track_index) == decoded_tracks_.end()) {
std::shared_ptr<Sector> first_sector = get_next_sector();
std::set<uint8_t> visited_sectors;
if(first_sector) {
while(1) {
std::shared_ptr<Sector> next_sector = get_next_sector();
if(!next_sector || next_sector->sector == first_sector->sector) break;
if(next_sector) {
if(visited_sectors.find(next_sector->sector) != visited_sectors.end()) {
break;
}
visited_sectors.insert(next_sector->sector);
}
}
}
decoded_tracks_.insert(track_index);