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diff -up ./src/ccid_ifdhandler.h.readers_32 ./src/ccid_ifdhandler.h
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--- ./src/ccid_ifdhandler.h.readers_32	2018-08-20 16:06:34.080905748 -0700
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+++ ./src/ccid_ifdhandler.h	2018-08-20 16:07:04.638097096 -0700
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@@ -47,7 +47,7 @@ extern int DriverOptions;
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  * The maximum number of readers is also limited in pcsc-lite (16 by default)
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  * see the definition of PCSCLITE_MAX_READERS_CONTEXTS in src/PCSC/pcsclite.h
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  */
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-#define CCID_DRIVER_MAX_READERS 16
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+#define CCID_DRIVER_MAX_READERS 48
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 /*
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  * CCID driver specific functions