Add convert_u8_A_to_FAC1

strings/208DB420

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+JSR $B38D + JSR fragment
+
+Call to address in ROM + fragment

strings/4CA2B320

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+JMP $B3A2 + JSR fragment
+
+Call to well known floating point function + fragment

strings/A84CA2B3

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+TAY + JMP $B3A2
+
+Transfer to Y + Jump to well known floating point function (that needs its argument in Y)