spi_transfer((char)(address>>8));

Using Arduino Programming Questions
1

Question: what does the (CHAR) syntax do in the following line of code?

spi_transfer((char)(address>>8)); //send MSByte address first

2

That is what's called a typecast. It casts the variable on its immediate right to the type specified within the parenthesis (char - in your case).

3

I thought you might be asking what the 8) is doing in that line of code.

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