用verilog写一个带有存储数据功能的axi-full slave模块,且该模块具备outstanding功能，outstanding大小为10

以下是一个简单的带有存储数据功能的AXI-full slave模块，它支持outstanding大小为10：

module axi_full_slave (
    input axi_aclk,
    input axi_aresetn,
    input [31:0] axi_araddr,
    input [2:0] axi_arprot,
    input [7:0] axi_arlen,
    input [3:0] axi_arsize,
    input [1:0] axi_arburst,
    input [1:0] axi_arlock,
    input [3:0] axi_arcache,
    input [31:0] axi_awaddr,
    input [2:0] axi_awprot,
    input [7:0] axi_awlen,
    input [3:0] axi_awsize,
    input [1:0] axi_awburst,
    input [1:0] axi_awlock,
    input [3:0] axi_awcache,
    input [31:0] axi_wdata,
    input [3:0] axi_wstrb,
    input [1:0] axi_wlast,
    input [1:0] axi_wvalid,
    output [1:0] axi_wready,
    output [31:0] axi_rdata,
    output [1:0] axi_rresp,
    output [1:0] axi_rlast,
    output [1:0] axi_rvalid,
    input [1:0] axi_rready
);

// Internal signals
reg [31:0] data_ram [0:1023];
reg [9:0] outstanding_count = 0;
reg [1:0] arready = 0;
reg [1:0] awready = 0;
reg [1:0] wready = 0;
reg [1:0] rvalid = 0;
reg [1:0] rlast = 0;
reg [1:0] rresp = 0;
reg [31:0] rdata = 0;

// AXI read address handler
always @(posedge axi_aclk or negedge axi_aresetn) begin
    if (~axi_aresetn) begin
        arready <= 0;
    end else if (outstanding_count < 10 && axi_arvalid && arready) begin
        outstanding_count <= outstanding_count + 1;
        arready <= 0;
    end else if (axi_rvalid && axi_rlast && rvalid && rlast && axi_rready && axi_rvalid) begin
        outstanding_count <= outstanding_count - 1;
        arready <= 1;
    end else begin
        arready <= 1;
    end
end

// AXI write address handler
always @(posedge axi_aclk or negedge axi_aresetn) begin
    if (~axi_aresetn) begin
        awready <= 0;
    end else if (outstanding_count < 10 && axi_awvalid && awready && axi_wvalid && wready) begin
        outstanding_count <= outstanding_count + 1;
        awready <= 0;
    end else if (axi_bready && axi_bvalid) begin
        outstanding_count <= outstanding_count - 1;
        awready <= 1;
    end else begin
        awready <= 1;
    end
end

// AXI write data handler
always @(posedge axi_aclk or negedge axi_aresetn) begin
    if (~axi_aresetn) begin
        wready <= 0;
    end else if (outstanding_count < 10 && axi_wvalid && wready && axi_awvalid && awready) begin
        outstanding_count <= outstanding_count + 1;
        wready <= 0;
    end else if (axi_bready && axi_bvalid) begin
        outstanding_count <= outstanding_count - 1;
        wready <= 1;
    end else begin
        wready <= 1;
    end
end

// AXI read data handler
always @(posedge axi_aclk or negedge axi_aresetn) begin
    if (~axi_aresetn) begin
        rvalid <= 0;
        rlast <= 0;
        rresp <= 0;
        rdata <= 0;
    end else if (outstanding_count > 0 && axi_arvalid && arready && ~rvalid) begin
        rvalid <= 1;
        rlast <= (axi_arlen == 0);
        rdata <= data_ram[axi_araddr[9:2]];
        rresp <= 0;
    end else if (rvalid && rlast && axi_rready && axi_rvalid) begin
        rvalid <= 0;
        rlast <= 0;
        rresp <= 0;
        rdata <= 0;
    end
end

// AXI write data storage
always @(posedge axi_aclk or negedge axi_aresetn) begin
    if (~axi_aresetn) begin
        data_ram <= '0;
    end else if (axi_awvalid && awready && axi_wvalid && wready) begin
        data_ram[axi_awaddr[9:2]] <= axi_wdata;
    end
end

// AXI interface assignments
assign axi_arready = arready;
assign axi_awready = awready;
assign axi_wready = wready;
assign axi_rvalid = rvalid;
assign axi_rlast = rlast;
assign axi_rresp = rresp;
assign axi_rdata = rdata;

endmodule

该模块包含四个主要的处理器，以支持AXI读写数据和outstanding计数：

- `axi_read_address_handler`：根据outstanding计数和AXI读取地址的有效性，控制ARREADY信号，以指示AXI主机是否可以发送下一个读取请求。
- `axi_write_address_handler`：根据outstanding计数和AXI写入地址、数据和有效性，控制AWREADY信号，以指示AXI主机是否可以发送下一个写入请求。
- `axi_write_data_handler`：根据outstanding计数和AXI写入数据的有效性，控制WREADY信号，以指示AXI主机是否可以发送下一个写入数据。
- `axi_read_data_handler`：根据outstanding计数和AXI读取数据的有效性，控制RVALID、RLAST、RRESP和RDATA信号，以指示AXI主机是否可以读取下一个数据。

此外，该模块还包含一个简单的数据RAM，用于存储AXI写入的数据。数据RAM的大小为1024个32位字，每个字都可以通过地址线axi_awaddr[9:2]来访问。