ÔHERE ARE A NUMBER OF ZERO PAGE LOCATIONS USED BY ÊIFFYÄÏÓ. ÔHESE
LOCATIONS ARE ALSO USED BY THE ÊIFFYÄÏÓ KERNAL BUILT INTO ÒÁÍÌINK AND
ÒÁÍÄRIVE. ÉT IS BEST TO AVOID USING THESE LOCATIONS IN YOUR OWN
PROGRAMS IN ORDER TO RETAIN COMPLETE ÊIFFYÄÏÓ COMPATIBILITY. ÁT THE
VERY LEAST, YOU SHOULD MAKE SURE THAT YOUR USE OF THEM DOES NOT
INTERFERE WITH ÊIFFYÄÏÓ' USAGE.

ÊIFFYÄÏÓ 64 ÚERO ÐAGE ÖARIABLES
-------------------------------
ÌOCATION  ÖARIABLE ÎAME  ÎOTE
--------  -------------  ----
$26       ALLFLAG/RSIZE    2
$27       COMSAV           2
$9Â       KEYBYT           2
$9Æ       CJLA             2
$Á3       LDFLG/QFLAG      3
$Á6       TFLAG            2
$Â0/$Â1   KEYPTR           2
$Â0       SPRSAV           1
$Â1       RASSAV           1
$Â2       REGSAV           1
$ÂÅ       DRVBYT           2
$ÂÆ       DEST             2

ÊIFFYÄÏÓ 128 ÚERO ÐAGE ÖARIABLES
--------------------------------
ÌOCATION  ÖARIABLE ÎAME  ÎOTE
--------  -------------  ----
$26       ALLFLAG/RSIZE    2
$27       COMSAV           2
$9Æ       CJLA             2
$Á3       LDFLG/QFLAG      3
$Á6       TFLAG/TOGSAV     2
$Â0       SPRSAV           1
$Â1       RASSAV           1
$Â2       REGSAV           1
$ÂÅ       DRVBYT           2
$ÂÆ       DEST             2

ÎOTES
-----
ÎOTE 1 - ÓAVED, THEN RESTORED BY ÌÏÁÄ ROUTINE (NO OTHER USAGE).
ÎOTE 2 - ÕSED ONLY FROM ÂÁÓÉÃ FOR ÊIFFYÄÏÓ WEDGE COMANDS, DEVICE
         TOGGLE, AND FUNCTION KEYS.
ÎOTE 3 - ÕSED IN ALL DISK ACCESS AND ÌÏÁÄ ROUTINES.