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Correct offset into track table.

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This commit is contained in:
Thomas Harte
2025-05-30 21:47:16 -04:00
parent 2ddaf0afa3
commit 8b31cfeafb
1 changed files with 6 additions and 1 deletions
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Storage/Disk/DiskImage/Formats/JFD.cpp
+6 -1
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@@ -12,6 +12,10 @@
#include "Storage/Disk/Encodings/MFM/Encoder.hpp"
#include "Storage/Disk/Encodings/MFM/Sector.hpp"
//
// File format documentation: https://gist.github.com/Kaens/a139d96dc429b49788e47ea57e55017d
//
using namespace Storage::Disk;
uint32_t JFD::read32() const {
@@ -53,7 +57,8 @@ int JFD::head_count() const {
}
std::unique_ptr<Track> JFD::track_at_position(const Track::Address address) const {
const uint32_t offset = track_offset_ + uint32_t(address.head + address.position.as_int() * 2);
const uint32_t offset = track_offset_ + uint32_t((address.head + address.position.as_int() * 2)) * sizeof(uint32_t);
// printf("!!! %d / %d -> %d\n", address.position.as_int(), address.head, offset - track_offset_);
if(offset >= sector_offset_) {
return nullptr;