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Historically, once a Z88 had a Slot 0 flash modification and OZ upgrade was performed, it could no longer run legacy applications… until now!
Legacy OZ Version Selection
One of the most cumbersome constraints of OZ 3.0 and earlier was the dependence on a RAM card in Slot 1 for Expanded mode, which Vision requires. However, by using OZ 4.0 on a Z88 with an internal RAM upgrade we can achieve a fully backward compatible Expanded machine without needing any other cards.
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Vision2 - a VT100, VT102, VT220, and VT320 terminal emulator. The main reason I embarked on this project.
SpellMaster - a companion to PipeDream which would be very useful to have available at all times.
OZ ROM Modifications
By copying the card header and the Application Front DOR to the end of the 512KB flash memory, editing the card size, and by amending the last of the linked application DORs in the OZ ROM image - we can add extra applications to the Index. We can also fix several bugs in OZ 4.0 at the same time. Both processes are explained on Dennis Gröning's website.
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