NAME   rev ADDR type chip Description
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SPRxPOS   140   W    A  D   Sprite x vert-horiz start position data.

         +-------+----------+------------------------------------------------+
         | BIT#  | SYM      | FUNCTION                                       |
         +-------+----------+------------------------------------------------+
         | 15-08 | SV7-SV0  | Start vertical value.High bit (SV8) is         |
         |       |          | in SPRxCTL register below.                     |
         | 07-00 | SH10-SH3 | Sprite horizontal start value. Low order       |
         |       |          | 3 bits are in SPRxCTL register below. If       |
         |       |          | SSCAN2 bit in FMODE is set, then disable       |
         |       |          | SH10 horizontal coincidence detect.This bit    |
         |       |          | is then free to be used by ALICE as an         |
         |       |          | individual scan double enable.                 |
         +-------+----------+------------------------------------------------+