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Portable Network Graphic  |  1990-09-25  |  18.1 KB  |  550x727  |  1-bit (2 colors)
   ocr: There is an exception to this rule. The Journaling Driver (see IMI 1-261) patches key Event Manager traps : GetMouse, Button, GetKeys, and lickCount. The Journaling Driver is now used exclusively by MacroMaker", and unfortunately the driver's patches are not reentrant. This means you cannot safely Use these traps in interrupt or VBL code. I you experience strange system hangs only when MacroMlaker is installed, this is probably the cause and yowr code should instead reference the appropriate low-memory globals for the intormation you need. SELF-MODIFYING CODE Applications that use sel-modifyin ...