┴ RATHER OBSCURE FEATURE THIS ONE, BUT IT WILL LET YOU ENABLE AN EXTERNAL ╥╧═ CARTRIDGE OF YOUR OWN DESIGN FROM THE ╙┼╥╓┴╬╘ MENU. ─UE TO THE 128'S DESIGN, MOST COMMERCIAL PRODUCED CARTRIDGES WILL SUPPRESS ╘╚┼ ╙┼╥╓┴╬╘ ENTIRELY. ╘O USE THIS FEATURE, YOU'LL PROBABLY HAVE TO DESIGN YOUR OWN CARTRIDGE. ╘HE ╤╒╔├╦ ┬╥╧╫╬ ┬╧╪ IS IDEAL FOR THIS PURPOSE. ╔T CONTAINS BATTERY BACKED ╥┴═, BUT ACTS MUCH LIKE A ╥╧═ CARTRIDGE BECAUSE IT RETAINS ITS CONTENTS WITHOUT POWER APPLIED. ┘OU'LL HAVE TO KNOW ═╠ PROGRAMMING TO DO IT IN ANY CASE BUT A ═╠ COURSE GOES BEYOND THE SCOPE OF THIS MANUAL. ╔F YOU HAVE THE ╤┬┬, YOUR MANUAL WILL DESCRIBE BRIEFLY HOW TO MAKE A CARTRIDGE WORK. ┴LSO, FUNCTION ╥╧═ CARTRIDGES IS BRIEFLY DESCRIBED IN THE 128 ╨ROGRAMMERS ╥EFERENCE ═ANUAL.
├ALL ┼XROM WILL SEARCH FOR THE PRESENCE OF A FUNCTION ╥╧═ IN ALL BANKS, CYCLING FROM 0 TO 15. ╚OWEVER, IT WON'T CHECK THE BANK CONFIGURATIONS WHERE ╘╚┼ ╙┼╥╓┴╬╘ ITSELF IS CURRENTLY VISIBLE, SO IT WON'T INADVERTENTLY CALL ITSELF. ╘HESE IS A QUIRK HERE: ╔F ╘╚┼ ╙┼╥╓┴╬╘ IS WORKING IN COMPUTER ╥┴═, IT CAN NOT ACCESS CARTRIDGE SOFTWARE IN OTHER ╥┴═ BANKS. ├HECKING ALL BANKS COULD MAKE IT EASIER FOR YOU TO DEVELOP CARTRIDGE SOFTWARE. ╒SE ╥┴═ BANK 0 OR 1 DURING DEVELOPMENT AND THEN MODIFY IT TO WORK IN EITHER EXTERNAL OR INTERNAL ╥╧═ LATER ON (OR MAKE IT ADJUST AUTOMATICALLY ACCORDING TO WHICH BANK IT FOUND ITSELF IN).
╨╠┼┴╙┼ ╬╧╘┼: ╔F ╘╚┼ ╙┼╥╓┴╬╘ IS MOUNTED EXTERNALLY, THIS COMMAND WILL ACCESS THE INTERNAL ╥╧═ IF PRESENT. ═OUNTED EXTERNALLY ╘╚┼ ╙┼╥╓┴╬╘ WILL SUPPRESS ANY INTERNAL ╥╧═ DURING STARTUP. ┴LSO PLEASE NOTE THAT THE COMPUTER ALWAYS WILL BE SET TO 1═HZ MODE WHEN ACCESSING THE OTHER ╥╧═. ╘HIS WILL ENSURE COMPATIBILITY WITH THE ╤┬┬ WHICH CAN'T OPERATE IN 2═HZ MODE.
┴ TIP: ╔F YOU SET THE ╥╧═ ╔.─. (BYTE 6, EITHER $8006 OR $C006) IN THE ╤┬┬ OR ╥╧═ TO ZERO, IT WILL BE DORMANT UNTIL IT IS CALLED FROM ╘╚┼ ╙┼╥╓┴╬╘ MAIN MENU. ╘HAT BYTE WOULD NORMALLY HOLD A VALUE OF 2 OR GREATER. ┘OU COULD USE THIS TRICK WITH ╘╚┼ ╙┼╥╓┴╬╘ TOO IF DESIRED.
