┴S PUBLISHED IN THE ═AY/╩UNE 1986 ISSUE OF ├OMMODORE ═ICROCOMPUTING MAGAZINE.
╘HIS DISK UTILITY IS DESIGNED FOR THE ├128 WITH A 1571 DISK. ╔T WILL ALSO RUN WITH A ├64 AND/OR 1541 DISK. ┴LL DISK COMMANDS USE THE COMMAND CHANNEL (SEC ADR #15) AND ╨╥╔╬╘# COMMANDS SO THE PROGRAM WILL RUN ON THE ├128 IN 64 MODE OR ON THE ├64.
╫HEN STARTED, THE PROGRAM DETERMINS THE TYPE OF DRIVE ATTACHED AS DEVICE #8 BY USING AN INVALID VARIATION OF THE NEW 1571 MODE SELECT COMMAND, TRYING TO SELECT MODE 9 WHICH DOESN'T EXIST. ┴ 1541 DISK IGNORES THE COMMAND WITH A VALID STATUS (0) RETURNED, WHILE A 1571 DISK RETURNS AN ERROR CODE 31.
╔F A 1571 DRIVE IS DETECTED, THE PROGRAM THEN TRIES TO FIND WHAT MODE (SS/DS) IT IS RUNNING IN BY ISSUING THE HEAD SELECT COMMAND. ╔F THE DRIVE IS IN DOUBLE SIDED (DS) MODE, THE COMMAND IS INVALID AND AN ERROR 31 IS RETURNED. ╔F IN SINGLE SIDED (SS) MODE, HEAD 0 IS SELECTED AND VALID STATUS IS RETURNED.
╘HE MAIN MENU IS THEN DISPLAYED WITH AN INDICATION OF WHAT DRIVE AND MODE (1571) WAS FOUND. ┴NY OF THE INDICATED FUNCTIONS CAN THEN BE SELECTED AFTER A DISK IS INSERTED. ╘HE FIRST 2 FUNCTIONS ARE THE MAIN FEATURES OF THIS UTILITY, THEY PROVIDE AN EXPANDED DISK DIRECTORY THAT ATTEMPTS TO IDENTIFY THOSE FILES THAT ARE ON THE SECOND SIDE OF A DS DISK. ╘HE INFORMATION TAKES THE GUESSWORK OUT OF KNOWING WHICH FILES ON A DS DISK CAN BE LOADED/READ ON A SS DRIVE. ╘HESE OPTIONS ALLOW DISPLAYING OR PRINTING THE DIRECTORY INFORMATION.
╘HE DIR HEADING LINE WILL INDICATE THE DISK NAME, ID, FORMAT, AND #BLKS FREE AS WELL AS WHETHER THE DISK WAS FORMATTED AS SS OR DS. ┼ACH ENTRY IS THEN DISPLAYED ONE PER LINE WITH #BLKS AND FILE TYPE. ╞ULL DIR ALSO DISPLAYS DELETED FILES (─┼╠). ┴LSO INDICATES LOCKED (╠) OR OPEN (╧) FILES, OR THOSE THAT USE SIDE 2 (2).
╘HE THIRD MENU FUNCTION ALLOWS TOGGLING THE LOCK BIT TO LOCK UNLOCKED FILES OR UNLOCK LOCKED FILES. ╘HE 4TH OPTION ALLOWS CHANGING THE DISK NAME BUT NOT THE ID.
╘HE 5TH MENU OPTION ALLOWS SENDING COMMANDS DIRECT TO THE DISK VIA THE COMMAND CHANNEL (15). ╘HE COMMAND MUST BE ENCLOSED IN QUOTES, USING THE NORMAL COMMAND CHANNEL COMMAND FORMAT.
╞OR 1571 DISKS, ANOTHER MENU OPTION ALLOWS SWITCHING THE MODE OF THE DRIVE FROM SS TO DS, OR FROM DS TO SS.
