I need to pass a parameter to a dll function using an unsigned byte and am having some problems.

DECLARE INTEGER LoadToRam IN Hc11DownLoaderDll INTEGER,STRING,STRING

retval = LoadToRam(portnum,CHR(255),NULL)

I need to pass the CHR(255) and the portnum as unsigned char but Foxpro sends it as a signed char.

A VB implementation uses the following.

Private Declare Function LoadToRam Lib "Hc11DownLoaderDll.dll" _
(ByVal comPort_ As Byte, ByVal commandCode_ As Byte, _
ByRef progressBarPtr_ As Any) As Integer

command = CByte(&HFF)

comport = CByte(cboComPort.Text)

result = LoadToRam(comport, command, vbNullString)

A C++ implementation of course just does a cast to unsigned char for the character byte 0xFF.

I need a way to do it in VFP 6.0 if it is possible.
Any help is appreciated