ADTCK (ADT CHECK) for ADT versions 1.21 and 1.22 and ADTGS versions .90 and .91 Usually, the transfer of the Apple II ADT program from the PC-- the transfer you do at 300 baud-- will go fine and ADT will get BSAVED and work like it should. In case ADT does not seem to be working correctly, you may want to check that the transferred program was not corrupted. ADTCK is a short program you can type in and run to check that you have a good copy of ADT on your Apple II. Type in the program below and save it as ADTCK on the same disk as ADT. Then, RUN ADTCK and check the numbers you get against the checksums listed after the program. (The program displays intermediate sums and a final sum.) 10 TEXT : HOME 20 PRINT CHR$ (4)"BLOAD ADT,A$4000" 40 FOR I = 0 TO 2579 50 Z = Z + PEEK (16384 + I) 55 IF I / 500 = INT (I / 500) THEN PRINT "CURRENT SUM= ";Z 60 NEXT I 70 PRINT "CHECKSUM= ";Z Checksums ADT v1.21 ADT v1.22 ADTGS (v .90) 76 76 76 53958 53958 39865 101079 101079 89559 158919 158919 142200 224503 224504 206728 307268 307117 289377 313020 312869 295079 <-- final sums ADTgs (v.91) 76 48588 97886 151354 201728 284376 290904 <-- final sum Rubywand