How can I boot ProDOS on my Franklin computer?
In an old Apple Clinic note, Stephen Craft listed specific locations to change after your Franklin freezes. You could then restart via a 2000G from the monitor. Here is an updated listing showing the locations to change for several versions of ProDOS: v1.1.1 $269E: EA EA v1.4 $282B: EA EA V1.6 $282B: EA EA v1.7 $282B: EA EA v1.8 $2836: EA EA v1.9 $2865: EA EA v2.0.3 $2836: EA EA It turns out that the bytes Stephen was diddling are D0 03 in the sequence 69 0B D0 03 A5 0C 60. The sequence is near the end of a routine that checks for the “APPLE ][” string found in all genuine Apple II ROMs but not in most Apple II clone ROMs. To fix the booting problem, do this: Start Copy II+ and select “Sector Editor” Swap-in the ProDOS diskette READ Track 0, Sector 0 Search for (Hex bytes): 69 0B D0 03 A5 0C 60 When you find the above, change the D0 03 to EA EA and write the changed sector back to diskette. The patch eliminates the checksum test/branch and allows ProDOS to boot on Apple II clones which
