Index: doc/formats.html
===================================================================
RCS file: /afs/psi.ch/user/z/zimoch/.cvsroot/StreamDevice2/doc/formats.html,v
retrieving revision 1.9
retrieving revision 1.10
diff -c -r1.9 -r1.10
*** doc/formats.html	8 Aug 2007 10:14:28 -0000	1.9
--- doc/formats.html	8 Aug 2007 10:16:45 -0000	1.10
***************
*** 364,369 ****
--- 364,371 ----
    <dd>One byte. The bitwise inverse of the sum of all characters modulo 2<sup>8</sup>.</dd>
   <dt><code>%&lt;XOR&gt;</code></dt>
    <dd>One byte. All characters xor'ed.</dd>
+  <dt><code>%&lt;XOR7&gt;</code></dt>
+   <dd>One byte. All characters xor'ed &amp; 0x7F.</dd>
   <dt><code>%&lt;CRC8&gt;</code></dt>
    <dd>One byte. An often used 8 bit CRC checksum
    (poly=0x07, init=0x00, xorout=0x00).</dd>
Index: src/ChecksumConverter.cc
===================================================================
RCS file: /afs/psi.ch/user/z/zimoch/.cvsroot/StreamDevice2/src/ChecksumConverter.cc,v
retrieving revision 1.16
retrieving revision 1.18
diff -c -r1.16 -r1.18
*** src/ChecksumConverter.cc	2 Oct 2006 08:42:06 -0000	1.16
--- src/ChecksumConverter.cc	8 Aug 2007 10:13:08 -0000	1.18
***************
*** 49,54 ****
--- 49,59 ----
      return sum;
  }
  
+ static ulong xor7(const uchar* data, ulong len, ulong sum)
+ {
+     return xor8(data, len, sum) & 0x7F;
+ }
+ 
  static ulong crc_0x07(const uchar* data, ulong len, ulong crc)
  {
      // x^8 + x^2 + x^1 + x^0 (0x07)
***************
*** 447,452 ****
--- 452,458 ----
      {"notsum",  sum,              0x00,       0xff,       1}, // 0x22
      {"~sum",    sum,              0x00,       0xff,       1}, // 0x22
      {"xor",     xor8,             0x00,       0x00,       1}, // 0x31
+     {"xor7",    xor7,             0x00,       0x00,       1}, // 0x31
      {"crc8",    crc_0x07,         0x00,       0x00,       1}, // 0xF4
      {"ccitt8",  crc_0x31,         0x00,       0x00,       1}, // 0xA1
      {"crc16",   crc_0x8005,       0x0000,     0x0000,     2}, // 0xFEE8