When a write operation, branch target / source address can be written into the first of the trace buffer register, and the contents of each register can be shifted by one register to the upstream. 跟踪缓冲器还可以包括使用硬件和软件环对程序流压缩的结构. Trace buffer can also include the use...
如果Buffer是empty的,给定write信号会向寄存器中写入输入数据并将状态切换为full,如果Buffer是full的,给定read信号会读出寄存器中的数据并将状态切换为empty。实现如下: classFIFORegister(size:Int)extendsModule{valio=IO(newBundle{valenq=newWriterIO(size)valdeq=newReaderIO(size)})valempty::full::Nil=Enum(2)...
buffer[bytes_read] = '\0';while(bytes_read > 0){ res = write(pipe_fd, buffer, bytes_read...
}fifo_buf; unsignedcharbuffer[32]={0};voidinit_write_to_buf(void) {if(fifo_buf.next<32) { fifo_buf.data[fifo_buf.next]=buffer[fifo_buf.next];//将buffer中的数据写入到fifo_buf中;fifo_buf.next++; }return0; } fifo_buf.next的起始点是0,所以最初存储的数据是fifo_buf.data[0],下一个...
buffer, BUF_LEN);36if(read_bytes <0){37perror("read error\n");38close(pipeid);39return-1;40}4142constchar* buff_send =buffer;43intno_write_bytes =read_bytes;44while(no_write_bytes >0){45intn =write(pipeid, buff_send, no_write_bytes);46if(n <0){47perror("write error\n"...
reg [DATA_WIDTH - 1 : 0] fifo_buffer[0 : DATA_DEPTH - 1]; //define the write and read pointer and //pay attention to the size of pointer which should be greater one to normal reg [$clog2(DATA_DEPTH) : 0] wr_pointer = 0, rd_pointer = 0; ...
[8-1:0]fifo_data_in,inputfifo_data_in_vaild,outputregfifo_data_out_vaild,output[32-1:0]fifo_data_out);// write fiforeg[1:0]buffer_wr_addr;reg[32-1:0]temp_buffer;always@(posedgesrc_clkornegedgerst_n)beginif(!rst_n)beginbuffer_wr_addr<=2'b00;endelsebeginbuffer_wr_addr<=(...
7.1.2. Write Data FIFO Buffer The write data FIFO buffer accepts write data from the Avalon® -MM interface. The AFI controls the subsequent consumption of the FIFO buffer write data. 7.1.1. Avalon® -MM Slave Interface 7.1.3. Command Issuing FSM Company...
write_ready:这与双缓冲区有关,需要管理缓冲区的两侧。这2 bit信号告诉双缓冲区的哪一侧已准备好。 0:缓冲区的下半部分准备好 1:上半部分准备好 write_activate:用户告诉 Ping Pong FIFO 它想要拥有缓冲区的一侧 write_fifo_size:表示用户可以写入 Ping Pong FIFO(PPFIFO) 的字数。
2)、fifomem.vhd,FIFO存储buffer,可以被读写时钟访问的同步双口RAM; 3)、async_cmp.vhd,异步指针比较模块,并产生控制标识“空”、“满”状态位的控制信号。本模块均为组合逻辑,无时序逻辑。 4)、rptr_empty.vhd,这个模块完成读时钟域(rclk)的同步,同时包含读指针和空标志产生逻辑。模块的输入信号aempty_n要...