Fix DateTimeFromProDOS and tests

prodos/format_test.go

@@ -20,7 +20,7 @@ func TestCreateVolume(t *testing.T) {
 	for _, tt := range tests {
 		testname := fmt.Sprintf("%d", tt.blocks)
 		t.Run(testname, func(t *testing.T) {
-			fileName := os.TempDir() + "test-volume.hdv"
+			fileName := os.TempDir() + "/test-volume.hdv"
 			defer os.Remove(fileName)
 			file, err := os.Create(fileName)
 			if err != nil {

prodos/time.go

@@ -50,7 +50,7 @@ func DateTimeFromProDOS(buffer []byte) time.Time {
 		year = 1900 + int(twoDigitYear)
 	}
 
-	month := int(buffer[0]>>5 + buffer[1]&1)
+	month := int(buffer[0]>>5 + (buffer[1]&1)<<3)
 	day := int(buffer[0] & 31)
 	hour := int(buffer[3])
 	minute := int(buffer[2])