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Diffstat (limited to 'src/lib/formats/jvc_dsk.cpp')
-rw-r--r--src/lib/formats/jvc_dsk.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/lib/formats/jvc_dsk.cpp b/src/lib/formats/jvc_dsk.cpp
index 4d88e65cdce..f06fda850b2 100644
--- a/src/lib/formats/jvc_dsk.cpp
+++ b/src/lib/formats/jvc_dsk.cpp
@@ -135,7 +135,7 @@ bool jvc_format::parse_header(util::random_read &io, int &header_size, int &trac
// The JVC format has a header whose size is the size of the image modulo 256. Currently, we only
// handle up to five header bytes
uint64_t size;
- if (io.length(size))
+ if (io.length(size) || !size)
return false;
header_size = size % 256;
uint8_t header[5];
@@ -178,7 +178,7 @@ bool jvc_format::parse_header(util::random_read &io, int &header_size, int &trac
int jvc_format::identify(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants) const
{
int header_size, tracks, heads, sectors, sector_size, sector_base_id;
- return parse_header(io, header_size, tracks, heads, sectors, sector_size, sector_base_id) ? 50 : 0;
+ return parse_header(io, header_size, tracks, heads, sectors, sector_size, sector_base_id) ? FIFID_STRUCT|FIFID_SIZE : 0;
}
bool jvc_format::load(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants, floppy_image *image) const