const 
 byte 
 cfg_cupgain 
 = 
 0 
 ; 
 // the usage definition of the pins D7..D12 

 // 0: input  1:input(pulled-up)  2:output 


 word 
 oscversion 
 = 
 0x0001 
 ; 

 word 
 oscvbg 
 ; 
 // band gap voltage in 10bits  0 means a failure. 

 word 
 oscconfig 
 ; 
 // bit0 -> if trigger voltage is 0:uncontrollable 

 //                               1:controllable 

 // bit1 -> optional-fgen is      0:not attached 

 //                               1:attached 

 // bit2 -> cupgain is            0:input 

 //                               1:output 

 byte 
 oscspeed 
 = 
 0 
 ; 
 // 0..3:real 4..7:equiv 8:roll 

 byte 
 oscinput 
 = 
 0 
 ; 
 // input signal selection  0:CH1 1:CH2 2:DUAL 


 byte 
 osctrig 
 = 
 0 
 ; 
 // trigger bit012-> 000:CH1 001:CH2 010:EXT 

 //                  011:built-in-pulse 

 //                  100:optional-fgen 

 //         bit4  -> 0:rising 1:falling 

 //         bit5  -> 0:auto   1:normal 

 word 
 osctdly 
 = 
 100 
 ; 
 // time of delayed trigger  100..30000 usec 

 byte 
 osctvolt 
 ; 
 // trigger level voltage (measured by adc) 0..255 

 byte 
 osctduty 
 ; 
 // trigger level duty  0..255 


 byte 
 osccupgain 
 = 
 0 
 ; 
 // bit0  -> CH1 coupling        0:dc  1:ac 

 // bit1  -> CH2 coupling        0:dc  1:ac 

 // bit23 -> CH1 gain-selection  0,1,2,3 

 // bit45 -> CH2 gain-selection  0,1,2,3 


 long 
 oscofreq 
 = 
 1000 
 ; 
 // 31 .. 2000000Hz 

 byte 
 oscoduty 
 = 
 50 
 ; 
 // 0..100% 


 byte 
 fgen 
 ; 
 // 0..3: fgen-dipsw  255:no-fgen 



 #define 
 TXBSZ 
 1100 

 #define 
 RXBSZ 
 256 
 //  this must be 256. 

 #define 
 RMBSZ 
 256 
 //  this must be 256.  for rollmode 


 int 
 txn 
 , 
 txr 
 ; 

 byte 
 txcrc 
 , 
 rxn 
 ; 

 byte 
 rmw 
 , 
 rmr 
 , 
 rmon 
 ; 


 byte 
 txbuf 
 [ 
 TXBSZ 
 ] 
 ; 

 byte 
 rxbuf 
 [ 
 RXBSZ 
 ] 
 ;