Difference between revisions of "SP0256 Program Counter"
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Revision as of 22:34, 18 January 2005
The microsequencer in the SP0256 conceptually maintains a 16-bit Program Counter. The PC points to a byte address, since all branches are to byte boundaries. Internally, the PC may actually be a 19-bit bit-aligned counter.
All serial speech ROMs keep a shadow copy of the PC.
