Difference between revisions of "84PCE:Syscalls:0002E8"
From WikiTI
| Line 9: | Line 9: | ||
=== Inputs === | === Inputs === | ||
| − | A = Sector to clear | + | * A = Sector to clear |
=== Outputs === | === Outputs === | ||
| − | Sector erased | + | * Sector erased |
=== Destroys === | === Destroys === | ||
Revision as of 22:50, 25 May 2016
Contents
Synopsis
Hypothesized Official Name: EraseFlashSector
Syscall Address: 0002DCh
Erases an entire sector (64kb) of flash memory. This basically resets the bytes in the sector back to the nominal value of FF.
Inputs
- A = Sector to clear
Outputs
- Sector erased
Destroys
- All
Notes
This routine actually checks the caller PC address to ensure it was called from a suitable location. A workaround is as follows using the fact that 0000F8 consists of a jump to a ret instruction.
EraseFlashSector: ld bc,0000F8h push bc jp _EraseFlashSector
