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Mem MapROM
Steven Frank edited this page May 29, 2015
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9 revisions
see also: Memory Map
The Newton ROM is devided into two major parts. The first part is the code that is executed at startup and during run time. The second part is a "ROM Extension". NewtonOS supports multiple ROM Extensions that contain all kinds of data.
An optional ROM extension can be placed at 8MB. Einstein uses this REx to replace the original NewtonOS drives with Einstein specific drivers that call native code to do their business.
| 0x00000000 to 0x007FFFFF | |
| 0x00000000 8 MB 0x0071FC48 |
NewtonOS (Mem MapROMOS) |
| 0x0071FC4C 900 KB 0x7FB810 |
ROM Extension (REx) |
| 0x007FB814 4 MB 0x007FFFFF |
(empty) |