fItemBufferUpto
c[0] = kTextData[fItemBufferUpto];
_ChecksumProcessCharacter(kTextData[fItemBufferUpto]);
fItemBufferUpto++;
if (fItemBufferUpto >= fItemBufferSize) {
fItemBufferUpto = 0;
c[0] = fBuffer[fItemBufferUpto];
_ChecksumProcessCharacter(fBuffer[fItemBufferUpto]);
fItemBufferUpto++;
if (fItemBufferUpto >= fItemBufferSize) {
fItemBufferUpto = 0;
int fItemBufferUpto;
int fItemBufferUpto;