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@ -68,6 +68,7 @@ color := $0787
## Assembly Sources
* Op-code mnemonics must have lower-case letters. The names of instruction macroes may have upper-case letters.
* Op-codes must use their official and commonly used mnemonics, ie bcc and bcs and not bgt and blt
* Hexadecimal number constants should be used except where decimal or binary numbers make much more sense in that constant's context.
* Hexadecimal letters should be upper-case.
* When you set two registers or two memory locations to an immediate 16-bit zero, you should use the expressions ```#<$0000``` and ```#>$0000``` (they make it obvious where you are putting the lower and upper bytes).