NAME   rev ADDR type chip Description
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SPRHSTRT H 1D0  W   A     UHRES sprite vertical display start

 BIT#  15  14  13  12  11  10  09  08     07  06  05  04  03  02  01  00
        x   x   x   x   x  v10 v9  v8     v7  v6  v5  v4  v3  v2  v1  v0