This bug was originally (incorrectly) posted on the TICT Message Board. In a program graphics loop that puts the processor to sleep, renders something on a temporary graphics plane, copies that plane into LCD_MEM, and finally displays something else (like a score) written directly to the screen, the last component is ignored by TiEmu, but displayed on a real calculator. As suggested by Kevin, this is probably because TiEmu thinks this graphics loop is a grayscale routine. The included program is a small demo program in which the text "can you see me?" doesn't appear in TiEmu but has been tested to work on a real TI89 Titanium.
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