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Ports

Ports has to date been arranged to handle multiple-program dialogues, including assuming program termination and operating system intervention between modules. In compensating for the loss of these assumptions, when using monoprogram form, adjusting modules themselves would not only be time-consuming and error-prone; it would irreversibly commit the module's code to monoprogram format. Some modifications have therefore been made to allow the Attract program to simulate multiple-program conditions where Ports needs to see them, invisibly to the individual module.

Although they are not expected to present much interest in the future, certain alternative modifications that were made for multiple-program format are also described here. They were an alternative, but ultimately less attractive, response to the impossibility of fitting all modules of the larger of the dialogues, in their DOS implementations, on one 720K floppy disc.

• PtInit updates for Monoprogram form
  • New Compilation Flags
  • Setting up Full Re-Initialization
• Extensions to Extra Services Control
• Interface Modifications