Add temp zero sector

generic.disk.cpp

@@ -25,6 +25,7 @@
 
     size_t      gnDskSize = 0;
     uint8_t     gaDsk[ DSK_SIZE_32M ];
+    uint8_t     gaTmp[ DSK_SECTOR_SIZE * 2 ];
 
     uint16_t DskGet16( int offset )
     {

prodos.tools.cpp

@@ -1432,11 +1432,11 @@ void ProDOS_Init( const char *path )
 {
     // Zero disk
     memset( gaDsk, 0, gnDskSize );
+    memset( gaTmp, 0, PRODOS_BLOCK_SIZE );
 
     // Copy Boot Sector
     // TODO: Use ProDOS 2.4.1 boot sector
 
-
     // Create blocks for root directory
     int nRootDirBlocks = 4;
     int iPrevDirBlock  = 0;