diff --git a/src/devices/bus/a2bus/a2scsi.cpp b/src/devices/bus/a2bus/a2scsi.cpp
index 988ebfd0096..d98e22382ff 100644
--- a/src/devices/bus/a2bus/a2scsi.cpp
+++ b/src/devices/bus/a2bus/a2scsi.cpp
@@ -52,7 +52,7 @@ DEFINE_DEVICE_TYPE(A2BUS_SCSI, a2bus_scsi_device, "a2scsi", "Apple II SCSI Card"
 
 static void scsi_devices(device_slot_interface &device)
 {
-	device.option_add("cdrom", NSCSI_CDROM);
+	device.option_add("cdrom", NSCSI_CDROM_APPLE);
 	device.option_add("harddisk", NSCSI_HARDDISK);
 	device.option_add_internal("ncr5380", NCR5380N);
 }
diff --git a/src/devices/machine/nscsi_cd.cpp b/src/devices/machine/nscsi_cd.cpp
index b58a179161a..8d8a766e131 100644
--- a/src/devices/machine/nscsi_cd.cpp
+++ b/src/devices/machine/nscsi_cd.cpp
@@ -14,6 +14,7 @@ DEFINE_DEVICE_TYPE(NSCSI_XM5301SUN, nscsi_toshiba_xm5301_sun_device, "nxm5301sun
 DEFINE_DEVICE_TYPE(NSCSI_XM5401SUN, nscsi_toshiba_xm5401_sun_device, "nxm5401sun", "XM-5401B Sun 4x CD-ROM (New)")
 DEFINE_DEVICE_TYPE(NSCSI_XM5701, nscsi_toshiba_xm5701_device, "nxm5701", "XM-5701B 12x CD-ROM (New)")
 DEFINE_DEVICE_TYPE(NSCSI_XM5701SUN, nscsi_toshiba_xm5701_sun_device, "nxm5701sun", "XM-5701B Sun 12x CD-ROM (New)")
+DEFINE_DEVICE_TYPE(NSCSI_CDROM_APPLE, nscsi_cdrom_apple_device, "scsi_cdrom_apple", "Apple SCSI CD-ROM")
 
 nscsi_cdrom_device::nscsi_cdrom_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
 	nscsi_cdrom_device(mconfig, NSCSI_CDROM, tag, owner, "Sony", "CDU-76S", "1.0", 0x00, 0x05)
@@ -55,6 +56,11 @@ nscsi_toshiba_xm5701_sun_device::nscsi_toshiba_xm5701_sun_device(const machine_c
 {
 }
 
+nscsi_cdrom_apple_device::nscsi_cdrom_apple_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+	nscsi_cdrom_device(mconfig, NSCSI_CDROM_APPLE, tag, owner, "Sony", "CDU-76S", "1.0", 0x00, 0x05)
+{
+}
+
 nscsi_cdrom_device::nscsi_cdrom_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
 	: nscsi_full_device(mconfig, type, tag, owner, clock)
 	, cdrom(nullptr)
@@ -624,3 +630,26 @@ bool nscsi_cdrom_sgi_device::scsi_command_done(uint8_t command, uint8_t length)
 		return nscsi_full_device::scsi_command_done(command, length);
 	}
 }
+/*
+   The Apple II SCSI Card firmware demands that ASC on a failing TEST_UNIT_READY be either 0x28 or 0xb0.
+   0x28 is MEDIA_CHANGED, 0xb0 is vendor-specific.  If the drive returns the normal 0x3A for disc-not-present,
+   the firmware assumes the drive is broken and retries the TEST_UNIT_READY for 60 seconds before giving up
+   and booting the machine.
+*/
+void nscsi_cdrom_apple_device::scsi_command()
+{
+	switch (scsi_cmdbuf[0]) {
+	case SC_TEST_UNIT_READY:
+		LOG("command TEST UNIT READY (AppleCD)\n");
+		if(cdrom)
+			scsi_status_complete(SS_GOOD);
+		else
+			sense(false, SK_NOT_READY, 0xb0);
+			scsi_status_complete(SS_CHECK_CONDITION);
+		break;
+
+	default:
+		nscsi_cdrom_device::scsi_command();
+		break;
+	}
+}
diff --git a/src/devices/machine/nscsi_cd.h b/src/devices/machine/nscsi_cd.h
index 48097cea42f..9f10e52023a 100644
--- a/src/devices/machine/nscsi_cd.h
+++ b/src/devices/machine/nscsi_cd.h
@@ -37,11 +37,12 @@ protected:
 	virtual uint8_t scsi_get_data(int id, int pos) override;
 	virtual void scsi_put_data(int buf, int offset, uint8_t data) override;
 
+	cdrom_file *cdrom;
+
 private:
 	static constexpr uint32_t bytes_per_sector = 2048;
 
 	uint8_t sector_buffer[bytes_per_sector];
-	cdrom_file *cdrom;
 	uint32_t bytes_per_block;
 	int lba, cur_sector;
 	required_device<cdrom_image_device> image;
@@ -103,6 +104,15 @@ public:
 	nscsi_toshiba_xm5701_sun_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
 };
 
+class nscsi_cdrom_apple_device : public nscsi_cdrom_device
+{
+public:
+	nscsi_cdrom_apple_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
+
+protected:
+	virtual void scsi_command() override;
+};
+
 DECLARE_DEVICE_TYPE(NSCSI_CDROM, nscsi_cdrom_device)
 DECLARE_DEVICE_TYPE(NSCSI_CDROM_SGI, nscsi_cdrom_sgi_device)
 DECLARE_DEVICE_TYPE(NSCSI_RRD45, nscsi_dec_rrd45_device)
@@ -111,5 +121,6 @@ DECLARE_DEVICE_TYPE(NSCSI_XM5301SUN, nscsi_toshiba_xm5301_sun_device)
 DECLARE_DEVICE_TYPE(NSCSI_XM5401SUN, nscsi_toshiba_xm5401_sun_device)
 DECLARE_DEVICE_TYPE(NSCSI_XM5701, nscsi_toshiba_xm5701_device)
 DECLARE_DEVICE_TYPE(NSCSI_XM5701SUN, nscsi_toshiba_xm5701_sun_device)
+DECLARE_DEVICE_TYPE(NSCSI_CDROM_APPLE, nscsi_cdrom_apple_device)
 
 #endif // MAME_MACHINE_NSCSI_CD_H