DriveWriteSector

Action

Write a Sector (512 Bytes) to the (Compact Flashcard) Drive

 

 

Syntax

bErrorCode = DRIVEWRITESECTOR(wSRAMPointer, lSectorNumber)

 

 

Remarks

bErrorCode	A Byte Variable, which is assigned with the error code of the function
wSRAMPointer	A Word Variable, which contains the SRAM address (pointer), from which the Sector to the Drive should be written
lSectorNumber	A Long Variable, which give the sector number on the drive to transfer.

 

Writes a Sector (512 Bytes) from SRAM starting at the address, to which the content of the variable wSRAMPointer is pointing to the Drive to sector number lSectornumber. The functions returns 0 if no error occurred. For Error code see section Error codes.

 

 For the meaning of wSRAMPointer see Note in DriveReadSector

 

 

See also

DriveCheck , DriveReset , DriveInit , DriveGetIdentity , DriveReadSector

 

 

ASM

Calls	_DriveWriteSector
Input	Z: SRAM-Address of buffer )	X: Address of Long-variable with sectornumber
Output	r25: Errorcode	C-Flag: Set on Error

 

 This is not the address of wSRAMPointer, it is its content, which is the starting-address of the buffer.

 

 

Partial Example

Dim bError as Byte
Dim aBuffer(512) as Byte' Hold Sector to and from CF-Card
Dim wSRAMPointer as Word' Address-Pointer for read
Dim lSectorNumber as Long' Sector Number
 
 
' give Address of first Byte of the 512 Byte Buffer to Word-Variable
wSRAMPointer =VarPtr(aBuffer(1))
 
' Set Sectornumber
 
lSectorNumber = 3
 
' Now Write in sector 3 from CF-Card
bError = DriveWriteSector( wSRAMPointer , lSectorNumber)

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