$ minipro -p AM27C512@DIP28 -r U48 -y
Found TL866II+ 04.2.132 (0x284)
WARNING: Chip ID mismatch: expected 0x0191, got 0x45FF (unknown)
Reading Code...  1.03Sec  OK
$ minipro -p AM27C512@DIP28 -r U49 -y
Found TL866II+ 04.2.132 (0x284)
WARNING: Chip ID mismatch: expected 0x0191, got 0x05DF (unknown)
Reading Code...  1.03Sec  OK

$ srec_cat -O VLANE_combined -binary U48 -binary -unsplit 2 1 U49 -binary -unsplit 2 0