Palm OS的架構是XIP(Execute In Place), 應該可譯做"就地執行", 不管程式是存
在ROM or RAM中.
XIP (Execute in Place)
The ability to execute code directly from the flash memory, without prior loading into a RAM buffer. This is a feature offered by NOR (AMD-style) flash, and linear flash memory cards, like AMD Miniature Cards and PCMCIA flash memory cards.
Some consumer electronics device designs, like legacy real-time operating systems (RTOSes), not only boot from ROM but execute there, too. Recently, Linux began supporting eXecute In-Place (XIP) in a standard file system, CramFS.