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-
-The Compal E88 supports the common Compal RAM linkages.
-These operate entirely from the Calypso internal RAM.
-
-Flash linkages are structured as follows:
-
- e88loader:
- Linked at address of original compal application (0x2000).
- Provides interrupt vectors as expected by compal loader.
- Allows interrupt redirection (XXX to where?).
-
- We introduce this for the following reasons:
- 1. We want to start our app at 0x10000, because that
- is the first flash page after the loader page, allowing
- us a higher degree of "unbrickability" by never reflashing
- the bootloader.
- 2. We want to keep the compal loader so we do not need even
- more boot options and to allow recovery of original firmware.
- 3. When there is a custom app in flash at 0xFFFF, just turning
- the phone on with the compal loader would jump into an incomplete
- motorola app. That might not even allow turning the phone off.
- The loader provides this functionality.
- 4. We do not want to patch the compal loader for interrupt
- redirect and entry vectors. So we need to place something between
- 0x2000 and 0x10000 anyway. And since there is space, why not put
- the whole loader in there.
- 5. This loader has a good chance of being able to read crash buffers.
- and examining RAM without it being clobbered by a ram upload.
-
- e88flash:
- Our main application linkage, starting at 0x10000 and going through
- all of flash. Data storage locations are still to be determined.
-