module NLAST2
title 'COMPARISON OF HITCN0-2 WITH TOTHIT0-2 = LAST2'

"INPUTS  GENERAL
       M0, M1, M2, M3, M4, M5, M6, M7   pin ;
       SS0, SS1, SS2                    pin ;
       HITCN0, HITCN1, HITCN2           pin ;
       RPOKX                            pin ;
       SM1Q0, READY, TRAIL, CLRTAG      pin ;
       IHOLD                            pin ;

"outputs        
       N2LAST0, N2LAST1, N2LAST2        pin ; 
       N2LAST3, N2LAST4, N2LAST5        pin ;     
       N2LAST6, N2LAST7, N2LAST8        pin ;
       N2LAST9                          pin ;     
       EMPTY, RLE                        pin ;

" decode the tagram Match lines & the address SS lines to get 
" the Total # of hits        
         TOTH0   macro {( !SS2 & !SS1 & !SS0 & M1   "2 hit/cell
                        # !SS2 &  SS1 & !SS0 & M3   "2 hit/cell
                        #  SS2 & !SS1 & !SS0 & M5   "2 hit/cell
                        #  SS2 &  SS1 & !SS0 & M7   "2 hit/cell
                        # !SS2 & !SS1 &  SS0 & (M1 & !M2 # M3) "4 hit/cell
                        #  SS2 & !SS1 &  SS0 & (M5 & !M6 # M7) "4 hit/cell
                        #         SS1 &  SS0 &                    "8 hit/cell
                        (M1 & !M2 # M3 & !M4 # M5 & !M6 # M7) )};
         TOTH1   macro {( !SS2 & !SS1 & SS0 &  M2                "4 hit/cell
                        #  SS2 & !SS1 & SS0 &  M6                "4 hit/cell
                        #         SS1 & SS0 & (M2 & !M4 # M6) )};"8 hit/cell
         TOTH2   macro {(         SS1 & SS0 &  M4)};             "4 hit/cell
"         A2 = [TOTH2, TOTH1, TOTH0];
"         B2 = [HITCN2, HITCN1, HITCN0];
"TAGRAM CONTROL: comparing A2=[TOTH2, TOTH1, TOTH0] to 
"B2=[HITCN2, HITCN1, HITCN0]
" we get LAST2, to control the number of hits to be sent.
"   NLAST2    = !(A2==B2);  divided into 10 FFB macrocells
" to be fast (40 products). We place them into a 7318.
" NLAST2 (defined in fsm.abl) =  N2LAST0 + .... +  N2LAST9
"  LAST2 (defined in fsm.abl) = !N2LAST0 * .... * !N2LAST9 

EQUATIONS

 RLE  = !RPOKX &!SM1Q0 & READY &!TRAIL &!CLRTAG &!IHOLD &!N2LAST0
           &!N2LAST1 &!N2LAST2 &!N2LAST3 &!N2LAST4 &!N2LAST5 &!N2LAST6
           &!N2LAST7 &!N2LAST8 &!N2LAST9
       # !SM1Q0 &!READY & TRAIL &!CLRTAG &!IHOLD & !RPOKX
       # !RPOKX & SM1Q0 &!READY &!TRAIL &!CLRTAG ;    

N2LAST0 = !M1 & !M5 & !M7 & HITCN0 & HITCN2
        #  M2 & !M3 & !M5 & !M7 & HITCN0 & HITCN1
        # !M1 & !M7 &          HITCN0 & HITCN1 & HITCN2
        # !M1 & !M3 &  M6 & !M7 & HITCN0 & HITCN1;

N2LAST1 = M2 & !M5 & !M7 & HITCN0 & HITCN2
                #  M2 & !M7 & HITCN0 & HITCN1 & HITCN2
                # !M3 & !SS1   & !SS2   & HITCN0 & HITCN1
                # !M7 & !SS1   & SS2    & HITCN0 & HITCN1;

N2LAST2 = M3 & !SS0   & SS1   & !SS2    & !HITCN0
         # M5 & !SS1   & SS2   & !HITCN0 & !HITCN1
         # M2 & !M3 & M6 & !M7  &  HITCN0  & HITCN1
         # M1 & !SS1   & !SS2  & !HITCN0 & !HITCN1;

N2LAST3 = !M6 & HITCN1 & HITCN2
         # M2 & !M4 & SS0    & SS1  & !HITCN1
         # M3 & !M4 & SS0    & SS1  & !HITCN0
         # M3 &  SS0   & !SS1   & !SS2 & !HITCN0;

N2LAST4 =  M2 & SS0    & !SS1 & !SS2 & !HITCN1
                 #  M1 & !M2 &  SS0 &  SS1 & !HITCN0
                 #  M5 & !M6 &  SS0 &  SS1 & !HITCN0
                 # !M1 & !SS0   & !SS1 & !SS2 & HITCN0;

N2LAST5 = !M1 & !M3 & !SS1 & !SS2 & HITCN0
     # !M5 & !SS0   & !SS1   &  SS2   & HITCN0
     # !M3 & !SS0   &  SS1   & !SS2   & HITCN0
     # !M1 & !M3 & !M5 & !M7 & HITCN0;

N2LAST6  = !SS0 & HITCN2
     # !SS1 & HITCN2
     # !SS0 & HITCN1;

N2LAST7 = !M2 & !SS1 & !SS2 & HITCN1
     # !M5 & !M7 & !SS1 & SS2 & HITCN0
     # !M6 & !SS1   &  SS2       & HITCN1
     # !M7 & !SS0   &  SS1 & SS2 & HITCN0;

N2LAST8 = M7 & SS1 & SS2 & !HITCN0
        # M7 & SS0 & SS2 & !HITCN0
        # M4 & SS0 & SS1 & !HITCN2
        # M6 & SS0 & SS2 & !HITCN1;

N2LAST9 = M7 &  SS0   & SS1 & !HITCN0
         #  M6 &  SS0   & SS1 & !HITCN1
         # !M2 & !M6       & HITCN1
         # !M4 & HITCN2;

EMPTY  = ( !M2 & !SS0 &  SS1 & !SS2
       #   !M6 & !SS0 &  SS1 &  SS2
       #   !M4 & !SS1 &  SS2
       #   !M0 & !SS1 & !SS2
       #   !M0 &  SS0 &  SS1        );

END