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<h1>novena_i2c_simple</h1>

<p>The coretest system for the Novena PVT1, over I2C, with simplified
user interface.</p>

<h2>Introduction</h2>

<p>This variant of novena_i2c provides a more intuitive, more compact,
and more efficient user interface - just write() the block data, and
read() the digest. All signalling to/from the hash cores is implicit
and handled by the SHA wrapper cores.</p>

<p>Repeated writes to the same SHA core will be added to the same digest;
the act of reading the digest resets the internal state, so that the
next write will start a new digest.</p>

<p>Each hash algorithm is a separate virtual I2C device on bus 2, with
the following device addresses:
  SHA-1         0x1e
  SHA-256       0x1f
  SHA-512/224   0x20
  SHA-512/256   0x21
  SHA-384       0x22
  SHA-512       0x23</p>

<h2>Status</h2>

<p><strong><em>(2014-09-18)</em></strong>
Initial version. Built using Xilinx ISE 14.3.</p>
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