diff --git a/src/lib/formats/abc800i_dsk.cpp b/src/lib/formats/abc800i_dsk.cpp
index c976d7867cf..a865cc175a4 100644
--- a/src/lib/formats/abc800i_dsk.cpp
+++ b/src/lib/formats/abc800i_dsk.cpp
@@ -9,6 +9,7 @@
 *********************************************************************/
 
 #include "formats/abc800i_dsk.h"
+#include "ioprocs.h"
 
 abc800i_format::abc800i_format() : wd177x_format(formats)
 {
@@ -83,6 +84,19 @@ const abc800i_format::format abc800i_format::formats[] = {
 
 const abc800i_format FLOPPY_ABC800I_FORMAT;
 
+int abc800i_format::identify(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants) const
+{
+	uint8_t h[1];
+	size_t actual;
+	io.read_at(0x810, h, 1, actual);
+
+	// start of directory
+	if (h[0] == 0x03)
+		return FIFID_SIGN;
+
+	return 0;
+}
+
 void abc800i_format::build_sector_description(const format &f, uint8_t *sectdata, desc_s *sectors, int track, int head) const
 {
 	if(f.sector_base_id == -1) {
diff --git a/src/lib/formats/abc800i_dsk.h b/src/lib/formats/abc800i_dsk.h
index 577573c11de..53310b6836e 100644
--- a/src/lib/formats/abc800i_dsk.h
+++ b/src/lib/formats/abc800i_dsk.h
@@ -23,6 +23,8 @@ public:
 	virtual const char *description() const override;
 	virtual const char *extensions() const override;
 
+	virtual int identify(util::random_read &io, uint32_t form_factor, const std::vector<uint32_t> &variants) const override;
+
 protected:
 	virtual void build_sector_description(const format &d, uint8_t *sectdata, desc_s *sectors, int track, int head) const override;