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Note that to use RAM apps, Installer will require a dedicated RAM card because OZ 4.0 is not capable of detecting applications installed to the RAM portion of a hybrid RAM/flash card, nor in Slot 0 RAM. Installer cannot in fact use hybrid card RAM but, even were it possible, OZ 4.0 would only evaluate the Front DOR at bank $3f (63) at the top of the card (in flash), and that would contain no reference to any RAM app. The newer OZ versions have been modified to also scan bank $1f (31) of hybrid cards (top of RAM).
Patching
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Vision2 for Slot 0
Vision Vision2 was sold as a 32KB EPROM. As explained in the Developer Notes, cards smaller than 1MB are addressable at repeating intervals within that Slot's address space. This allows OZ to easily scan the top bank of a card, without needing to know its size.
By default, Vision Vision2 cannot run from a 1MB card because its DORs presume it will occupy the last two banks, but its bank switching code presumes it will occupy the first two banks. Both conditions only hold true for a 32KB card.
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RomCombiner includes patches to lift the 32KB restrictive card limitation limitations for both Vision2 (full version) and for Vision/L (reduced feature version). These amend The Vision2 patch amends the following byte values in the bank switching code:
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