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case 0b10101 : |
case 0b10110 : |
case 0b10111 : |
out.write(a>>sh); |
break; |
default: |
out.write(a<<sh); |
break; |
} |
} |
}; |
/* |
* @ASCK |
*/ |
#include <systemc.h> |
SC_MODULE (Acc) { |
sc_in <sc_int<8>> mem_data; |
sc_in <bool> call; |
sc_out <bool> read, write; |
sc_out <sc_uint<13>> addr; |
sc_out <sc_int<8>> data; |
/* |
** module global variables |
*/ |
SC_CTOR (Acc){ |
SC_THREAD (process); |
sensitive << call; |
} |
void process () { |
while(true){ |
wait(); |
if(call.read()==1){ |
std::cout << "@@-_.|*^<!! STARTING ACCELERATOR !!>^*|._-@@" << endl; |
operation(); |
} |
} |
} |
void operation () { |
// store value 10 to address 11 |
write_to_mem (11, 10); |
// read from address 5 of memory : data=7 (this data has already stored by micro processor) |
sc_int<8> a = read_from_mem(5); |
// read from address 11 of memory : data=10 |
sc_int<8> b = read_from_mem(11); |
// a + b |
sc_int<8> c = a+b; |
// store c to address 20 of memory |
write_to_mem (20, c); |
// end the acc task and begin the micro task |
micro_notif(); |
} |
/* |
** notify micro processor that accelerator job is done and return back to the micro processor job |
*/ |
void micro_notif (){ |
micro_acc_ev.notify(); |
now_is_call = false; |
} |
// read from memory |
sc_int<8> read_from_mem (int ad) { |
read.write(1); |
write.write(0); |
addr.write(ad); |
wait(acc_mem_read_ev); |
no_read_write(); |
wait(10, SC_NS); |
return mem_data.read(); |
} |
// write to memory |
void write_to_mem (int ad, int dt) { |
read.write(0); |
write.write(1); |
addr.write(ad); |
data.write(dt); |
wait(acc_mem_write_ev); |