Line 49... |
Line 49... |
`define INCLUDE_ZIPCPU
|
`define INCLUDE_ZIPCPU
|
// `define NO_ZIP_WBU_DELAY
|
// `define NO_ZIP_WBU_DELAY
|
`define IMPLEMENT_ONCHIP_RAM
|
`define IMPLEMENT_ONCHIP_RAM
|
`ifndef VERILATOR
|
`ifndef VERILATOR
|
`ifndef XULA25
|
`ifndef XULA25
|
`define FANCY_ICAP_ACCESS
|
// `define FANCY_ICAP_ACCESS
|
`endif
|
`endif
|
`endif
|
`endif
|
`define FLASH_ACCESS
|
`define FLASH_ACCESS
|
// `define SDCARD_ACCESS // Not built yet ...
|
`ifdef XULA25
|
|
`define SDCARD_ACCESS
|
|
`endif
|
//
|
//
|
|
|
|
|
//
|
//
|
// Configuration question #2
|
// Configuration question #2
|
Line 71... |
Line 73... |
// `define FLASH_SCOPE
|
// `define FLASH_SCOPE
|
`ifndef FLASH_SCOPE
|
`ifndef FLASH_SCOPE
|
// `define WBUS_SCOPE // Occupies the FLASH_SCOPE location, so both cannot be active
|
// `define WBUS_SCOPE // Occupies the FLASH_SCOPE location, so both cannot be active
|
`endif
|
`endif
|
//
|
//
|
// Position #2: The ICAP configuration scope
|
// Position #2: The ICAP configuration scope, could also be the SDCard scope
|
|
// depending on how we configure ourselves here
|
//
|
//
|
|
`ifdef XULA25
|
`ifdef FANCY_ICAP_ACCESS
|
`ifdef FANCY_ICAP_ACCESS
|
`define CFG_SCOPE // Only defined if we have the access ...
|
`define CFG_SCOPE // Only defined if we have the access ...
|
|
`else
|
|
`ifdef SDCARD_ACCESS
|
|
`define SDCARD_SCOPE
|
|
`endif
|
|
`endif
|
`endif
|
`endif
|
//
|
//
|
// Position #3: The SDRAM scope
|
// Position #3: The SDRAM scope / UART scope (never both)
|
//
|
//
|
`define SDRAM_SCOPE
|
// `define SDRAM_SCOPE
|
|
// `define UART_SCOPE
|
//
|
//
|
// Position #4: The Zip CPU scope
|
// Position #4: The Zip CPU scope
|
//
|
//
|
`ifdef XULA25
|
`ifdef XULA25
|
// `define ZIP_SCOPE
|
// `define ZIP_SCOPE
|
Line 183... |
Line 193... |
wire [31:0] zip_addr, zip_data;
|
wire [31:0] zip_addr, zip_data;
|
// and then coming from devices
|
// and then coming from devices
|
wire zip_ack, zip_stall, zip_err;
|
wire zip_ack, zip_stall, zip_err;
|
wire dwb_we, dwb_stb, dwb_cyc, dwb_ack, dwb_stall, dwb_err;
|
wire dwb_we, dwb_stb, dwb_cyc, dwb_ack, dwb_stall, dwb_err;
|
wire [31:0] dwb_addr, dwb_odata;
|
wire [31:0] dwb_addr, dwb_odata;
|
wire [7:0] w_ints_to_zip_cpu;
|
wire [8:0] w_ints_to_zip_cpu;
|
`ifdef INCLUDE_ZIPCPU
|
`ifdef INCLUDE_ZIPCPU
|
`ifdef XULA25
|
`ifdef XULA25
|
wire [31:0] zip_debug;
|
wire [31:0] zip_debug;
|
zipsystem #(24'h2000,ZA,8,1,8)
|
zipsystem #(24'h2000,ZA,8,1,9)
|
zippy(i_clk, 1'b0,
|
zippy(i_clk, 1'b0,
|
// Zippys wishbone interface
|
// Zippys wishbone interface
|
zip_cyc, zip_stb, zip_we, w_zip_addr, zip_data,
|
zip_cyc, zip_stb, zip_we, w_zip_addr, zip_data,
|
zip_ack, zip_stall, dwb_idata, zip_err,
|
zip_ack, zip_stall, dwb_idata, zip_err,
|
w_ints_to_zip_cpu, zip_cpu_int,
|
w_ints_to_zip_cpu, zip_cpu_int,
|
Line 369... |
Line 379... |
assign scop_sel = (io_bank)&&(pre_scop);
|
assign scop_sel = (io_bank)&&(pre_scop);
|
assign cfg_sel =((wb_cyc)&&(wb_addr[31: 6]== 26'h05));
|
assign cfg_sel =((wb_cyc)&&(wb_addr[31: 6]== 26'h05));
|
// zip_sel is not on the bus at this point
|
// zip_sel is not on the bus at this point
|
assign mem_sel =((wb_cyc)&&(wb_addr[31:13]== 19'h01));
|
assign mem_sel =((wb_cyc)&&(wb_addr[31:13]== 19'h01));
|
assign flash_sel=((wb_cyc)&&(wb_addr[31:18]== 14'h01));
|
assign flash_sel=((wb_cyc)&&(wb_addr[31:18]== 14'h01));
|
|
`ifdef SDCARD_ACCESS
|
|
assign sdcard_sel=((wb_cyc)&&(wb_addr[31:2]== 30'h48));
|
|
`else
|
assign sdcard_sel=1'b0;
|
assign sdcard_sel=1'b0;
|
|
`endif
|
assign sdram_sel=((wb_cyc)&&(wb_addr[31:23]== 9'h01));
|
assign sdram_sel=((wb_cyc)&&(wb_addr[31:23]== 9'h01));
|
|
|
assign none_sel =((wb_cyc)&&(wb_stb)&&(~
|
assign none_sel =((wb_cyc)&&(wb_stb)&&(~
|
(io_sel
|
(io_sel
|
||uart_sel
|
||uart_sel
|
Line 412... |
Line 426... |
|
|
always @(posedge i_clk)
|
always @(posedge i_clk)
|
if (wb_err)
|
if (wb_err)
|
bus_err_addr <= wb_addr;
|
bus_err_addr <= wb_addr;
|
|
|
wire flash_interrupt, scop_interrupt,
|
wire flash_interrupt, sdcard_interrupt, scop_interrupt,
|
uart_rx_int, uart_tx_int, pwm_int;
|
uart_rx_int, uart_tx_int, pwm_int;
|
// The I/O processor, herein called an ioslave
|
// The I/O processor, herein called an ioslave
|
ioslave #(NGPO, NGPI) runio(i_clk,
|
ioslave #(NGPO, NGPI) runio(i_clk,
|
wb_cyc, (io_sel)&&(wb_stb), wb_we, wb_addr[4:0],
|
wb_cyc, (io_sel)&&(wb_stb), wb_we, wb_addr[4:0],
|
wb_data, io_ack, io_stall, io_data,
|
wb_data, io_ack, io_stall, io_data,
|
i_gpio, o_gpio,
|
i_gpio, o_gpio,
|
bus_err_addr,
|
bus_err_addr,
|
{ uart_tx_int, uart_rx_int, pwm_int, scop_interrupt,
|
{
|
|
sdcard_interrupt,
|
|
uart_tx_int, uart_rx_int, pwm_int, scop_interrupt,
|
flash_interrupt,
|
flash_interrupt,
|
`ifdef XULA25
|
`ifdef XULA25
|
zip_cpu_int
|
zip_cpu_int
|
`else
|
`else
|
1'b0
|
1'b0
|
Line 438... |
Line 454... |
//
|
//
|
|
|
//
|
//
|
// UART device
|
// UART device
|
//
|
//
|
|
wire [31:0] uart_debug;
|
uartdev serialport(i_clk, i_rx_uart, o_tx_uart,
|
uartdev serialport(i_clk, i_rx_uart, o_tx_uart,
|
wb_cyc, (wb_stb)&&(uart_sel), wb_we,
|
wb_cyc, (wb_stb)&&(uart_sel), wb_we,
|
{ ~wb_addr[2], wb_addr[0]}, wb_data,
|
{ ~wb_addr[2], wb_addr[0]}, wb_data,
|
uart_ack, uart_stall, uart_data,
|
uart_ack, uart_stall, uart_data,
|
uart_rx_int, uart_tx_int);
|
uart_rx_int, uart_tx_int,
|
|
uart_debug);
|
|
|
//
|
//
|
// PWM (audio) device
|
// PWM (audio) device
|
//
|
//
|
// The audio rate is given by the number of clock ticks between
|
// The audio rate is given by the number of clock ticks between
|
// samples. If we are running at 80 MHz, then divide that by the
|
// samples. If we are running at 80 MHz, then divide that by the
|
// sample rate to get the first parameter for the PWM device. The
|
// sample rate to get the first parameter for the PWM device. The
|
// second parameter is zero or one, indicating whether or not the
|
// second parameter is zero or one, indicating whether or not the
|
// audio rate can be adjusted (1), or whether it is fixed within the
|
// audio rate can be adjusted (1), or whether it is fixed within the
|
// build (0).
|
// build (0).
|
`ifdef XULA25
|
wbpwmaudio #(16'h270f,0,16) // 8 kHz, fixed audio rate
|
wbpwmaudio #(32'd1814,1) // 44.1 kHz, user adjustable
|
|
`else
|
|
wbpwmaudio #(32'h10000,0) // 8 kHz, fixed audio rate
|
|
`endif
|
|
pwmdev(i_clk,
|
pwmdev(i_clk,
|
wb_cyc, (wb_stb)&&(pwm_sel), wb_we, wb_addr[0],
|
wb_cyc, (wb_stb)&&(pwm_sel), wb_we, wb_addr[0],
|
wb_data, pwm_ack, pwm_stall, pwm_data, o_pwm, pwm_int);
|
wb_data, pwm_ack, pwm_stall, pwm_data, o_pwm, pwm_int);
|
|
|
|
|
|
|
//
|
//
|
// FLASH MEMORY CONFIGURATION ACCESS
|
// FLASH MEMORY CONFIGURATION ACCESS
|
//
|
//
|
wire flash_cs_n, flash_sck, flash_mosi;
|
wire flash_cs_n, flash_sck, flash_mosi;
|
|
wire spi_user, sdcard_grant, flash_grant;
|
`ifdef FLASH_ACCESS
|
`ifdef FLASH_ACCESS
|
wbspiflash flashmem(i_clk,
|
wbspiflash flashmem(i_clk,
|
wb_cyc,(wb_stb&&flash_sel),(wb_stb)&&(flctl_sel),wb_we,
|
wb_cyc,(wb_stb&&flash_sel),(wb_stb)&&(flctl_sel),wb_we,
|
wb_addr[17:0], wb_data,
|
wb_addr[17:0], wb_data,
|
flash_ack, flash_stall, flash_data,
|
flash_ack, flash_stall, flash_data,
|
flash_sck, flash_cs_n, o_sf_cs_n, flash_mosi, i_spi_miso,
|
flash_sck, flash_cs_n, o_sf_cs_n, flash_mosi, i_spi_miso,
|
flash_interrupt);
|
flash_interrupt, flash_grant);
|
`else
|
`else
|
reg r_flash_ack;
|
reg r_flash_ack;
|
initial r_flash_ack = 1'b0;
|
initial r_flash_ack = 1'b0;
|
always @(posedge i_clk)
|
always @(posedge i_clk)
|
r_flash_ack <= (wb_cyc)&&(wb_stb)&&((flash_sel)||(flctl_sel));
|
r_flash_ack <= (wb_cyc)&&(wb_stb)&&((flash_sel)||(flctl_sel));
|
Line 489... |
Line 504... |
assign flash_interrupt = 1'b0;
|
assign flash_interrupt = 1'b0;
|
|
|
assign flash_cs_n = 1'b1;
|
assign flash_cs_n = 1'b1;
|
assign flash_sck = 1'b1;
|
assign flash_sck = 1'b1;
|
assign flash_mosi = 1'b1;
|
assign flash_mosi = 1'b1;
|
|
|
This is an error
|
|
`endif
|
`endif
|
|
|
|
//
|
|
// SDCARD ACCESS
|
|
//
|
|
wire sdcard_cs_n, sdcard_sck, sdcard_mosi;
|
|
wire [31:0] sdspi_scope;
|
|
`ifdef SDCARD_ACCESS
|
|
sdspi sdcard_controller(i_clk,
|
|
// Wishbone interface
|
|
wb_cyc, (wb_stb)&&(sdcard_sel), wb_we, wb_addr[1:0], wb_data,
|
|
// return
|
|
sdcard_ack, sdcard_stall, sdcard_data,
|
|
// SPI interface
|
|
sdcard_cs_n, sdcard_sck, sdcard_mosi, i_spi_miso,
|
|
sdcard_interrupt, sdcard_grant, sdspi_scope);
|
|
`else
|
|
reg r_sdcard_ack;
|
|
initial r_sdcard_ack = 1'b0;
|
|
always @(posedge i_clk)
|
|
r_sdcard_ack <= (wb_cyc)&&(wb_stb)&&(sdcard_sel);
|
|
assign sdcard_stall = 1'b0;
|
|
assign sdcard_ack = r_sdcard_ack;
|
|
assign sdcard_data = 32'h0000;
|
|
assign sdcard_interrupt= 1'b0;
|
|
`endif // SDCARD_ACCESS
|
|
|
|
|
`ifdef FLASH_ACCESS
|
`ifdef FLASH_ACCESS
|
`ifdef SDCARD_ACCESS
|
`ifdef SDCARD_ACCESS
|
spiarbiter spichk(i_clk,
|
spiarbiter spichk(i_clk,
|
|
// Channel zero
|
flash_cs_n, flash_sck, flash_mosi,
|
flash_cs_n, flash_sck, flash_mosi,
|
|
// Channel one
|
sdcard_cs_n, sdcard_sck, sdcard_mosi,
|
sdcard_cs_n, sdcard_sck, sdcard_mosi,
|
o_sf_cs_n, o_sd_cs_n, o_spi_sck, o_spi_mosi);
|
o_sf_cs_n, o_sd_cs_n, o_spi_sck, o_spi_mosi,
|
This is an error
|
spi_user);
|
|
assign sdcard_grant = spi_user;
|
|
assign flash_grant = ~spi_user;
|
`else
|
`else
|
// Flash access, but no SD card access
|
// Flash access, but no SD card access
|
assign o_sf_cs_n = flash_cs_n;
|
assign o_sf_cs_n = flash_cs_n;
|
assign o_sd_cs_n = 1'b1;
|
assign o_sd_cs_n = 1'b1;
|
assign o_spi_sck = flash_sck;
|
assign o_spi_sck = flash_sck;
|
assign o_spi_mosi = flash_mosi;
|
assign o_spi_mosi = flash_mosi;
|
|
assign spi_user = 1'b0;
|
`endif // SDCARD_ACCESS && FLASH_ACCESS
|
`endif // SDCARD_ACCESS && FLASH_ACCESS
|
`else // FLASH_ACCESS
|
`else // FLASH_ACCESS
|
`ifdef SDCARD_ACCESS
|
`ifdef SDCARD_ACCESS
|
// SDCard access, but no flash access
|
// SDCard access, but no flash access
|
assign o_sf_cs_n = 1'b1;
|
assign o_sf_cs_n = 1'b1;
|
assign o_sd_cs_n = sdcard_cs_n;
|
assign o_sd_cs_n = sdcard_cs_n;
|
assign o_spi_sck = sdcard_sck;
|
assign o_spi_sck = sdcard_sck;
|
assign o_spi_mosi = sdcard_mosi;
|
assign o_spi_mosi = sdcard_mosi;
|
|
assign spi_user = 1'b1;
|
`else
|
`else
|
// No SPI access ...
|
// No SPI access ...
|
assign o_sf_cs_n = 1'b1;
|
assign o_sf_cs_n = 1'b1;
|
assign o_sd_cs_n = 1'b1;
|
assign o_sd_cs_n = 1'b1;
|
assign o_spi_sck = 1'b1;
|
assign o_spi_sck = 1'b1;
|
assign o_spi_mosi = 1'b1;
|
assign o_spi_mosi = 1'b1;
|
|
assign spi_user = 1'b0;
|
`endif // SDCARD_ACCESS, w/o FLASH_ACCESS
|
`endif // SDCARD_ACCESS, w/o FLASH_ACCESS
|
`endif // !FLASH_ACCESS
|
`endif // !FLASH_ACCESS
|
|
|
|
|
//
|
//
|
Line 648... |
Line 694... |
i_clk, wb_cyc, ((wb_stb)&&(scop_sel)&&(wb_addr[2:1]==2'b01)),
|
i_clk, wb_cyc, ((wb_stb)&&(scop_sel)&&(wb_addr[2:1]==2'b01)),
|
wb_we, wb_addr[0], wb_data,
|
wb_we, wb_addr[0], wb_data,
|
scop_cfg_ack, scop_cfg_stall, scop_cfg_data,
|
scop_cfg_ack, scop_cfg_stall, scop_cfg_data,
|
scop_cfg_interrupt);
|
scop_cfg_interrupt);
|
`else
|
`else
|
|
`ifdef SDCARD_SCOPE
|
|
wire scop_sd_trigger, scop_sd_ce;
|
|
assign scop_sd_trigger = (wb_cyc)&&(wb_stb)&&(sdcard_sel)&&(wb_we);
|
|
assign scop_sd_ce = 1'b1; // sdspi_scope[31];
|
|
wbscope #(5'h9) sdspiscope(i_clk, scop_sd_ce,
|
|
scop_sd_trigger, sdspi_scope,
|
|
// Wishbone interface
|
|
i_clk, wb_cyc, ((wb_stb)&&(scop_sel)&&(wb_addr[2:1]==2'b01)),
|
|
wb_we, wb_addr[0], wb_data,
|
|
scop_cfg_ack, scop_cfg_stall, scop_cfg_data,scop_cfg_interrupt);
|
|
`else
|
assign scop_cfg_data = 32'h00;
|
assign scop_cfg_data = 32'h00;
|
assign scop_cfg_ack = (wb_stb)&&(scop_sel)&&(wb_addr[2:1]==2'b01);
|
assign scop_cfg_ack = (wb_stb)&&(scop_sel)&&(wb_addr[2:1]==2'b01);
|
assign scop_cfg_stall = 1'b0;
|
assign scop_cfg_stall = 1'b0;
|
assign scop_cfg_interrupt = 1'b0;
|
assign scop_cfg_interrupt = 1'b0;
|
`endif
|
`endif
|
|
`endif
|
|
|
wire [31:0] scop_ram_data;
|
wire [31:0] scop_two_data;
|
wire scop_ram_ack, scop_ram_stall, scop_ram_interrupt;
|
wire scop_two_ack, scop_two_stall, scop_two_interrupt;
|
`ifdef SDRAM_SCOPE
|
`ifdef SDRAM_SCOPE
|
wire sdram_trigger;
|
wire sdram_trigger;
|
assign sdram_trigger = sdram_debug[18]; // sdram_sel;
|
assign sdram_trigger = sdram_debug[18]; // sdram_sel;
|
|
|
wbscope #(5'hb) sdramscope(i_clk, 1'b1, sdram_trigger,
|
wbscope #(5'hb) sdramscope(i_clk, 1'b1, sdram_trigger,
|
sdram_debug,
|
sdram_debug,
|
//{ sdram_trigger, wb_data[30:0] },
|
//{ sdram_trigger, wb_data[30:0] },
|
// Wishbone interface
|
// Wishbone interface
|
i_clk, wb_cyc, ((wb_stb)&&(scop_sel)&&(wb_addr[2:1]==2'b10)), wb_we, wb_addr[0],
|
i_clk, wb_cyc, ((wb_stb)&&(scop_sel)&&(wb_addr[2:1]==2'b10)), wb_we, wb_addr[0],
|
wb_data,
|
wb_data,
|
scop_ram_ack, scop_ram_stall, scop_ram_data,
|
scop_two_ack, scop_two_stall, scop_two_data,
|
scop_ram_interrupt);
|
scop_two_interrupt);
|
`else
|
`else
|
assign scop_ram_data = 32'h00;
|
`ifdef UART_SCOPE
|
assign scop_ram_ack = (wb_stb)&&(scop_sel)&&(wb_addr[2:1]==2'b10);
|
wire uart_trigger;
|
assign scop_ram_stall = 1'b0;
|
assign uart_trigger = uart_debug[31];
|
assign scop_ram_interrupt = 1'b0;
|
|
|
// wbscopc #(5'ha) uartscope(i_clk,1'b1, uart_trigger, uart_debug[30:0],
|
|
wbscope #(5'ha) uartscope(i_clk, 1'b1, uart_trigger, uart_debug[31:0],
|
|
// Wishbone interface
|
|
i_clk, wb_cyc, ((wb_stb)&&(scop_sel)&&(wb_addr[2:1]==2'b10)), wb_we, wb_addr[0],
|
|
wb_data,
|
|
scop_two_ack, scop_two_stall, scop_two_data,
|
|
scop_two_interrupt);
|
|
`else
|
|
assign scop_two_data = 32'h00;
|
|
assign scop_two_ack = (wb_stb)&&(scop_sel)&&(wb_addr[2:1]==2'b10);
|
|
assign scop_two_stall = 1'b0;
|
|
assign scop_two_interrupt = 1'b0;
|
|
`endif
|
`endif
|
`endif
|
|
|
wire [31:0] scop_zip_data;
|
wire [31:0] scop_zip_data;
|
wire scop_zip_ack, scop_zip_stall, scop_zip_interrupt;
|
wire scop_zip_ack, scop_zip_stall, scop_zip_interrupt;
|
`ifdef ZIP_SCOPE
|
`ifdef ZIP_SCOPE
|
wire zip_trigger;
|
wire zip_trigger;
|
assign zip_trigger=(wbu_zip_sel)&&(wbu_we)&&(wbu_stb)&&(~wbu_addr[0]);
|
assign zip_trigger=(wbu_zip_sel)&&(wbu_we)&&(wbu_stb)&&(~wbu_addr[0]);
|
wbscope #(5'ha) zipscope(i_clk, 1'b1, zip_trigger,
|
wbscope #(5'h9) zipscope(i_clk, 1'b1, zip_trigger,
|
zip_debug,
|
zip_debug,
|
// Wishbone interface
|
// Wishbone interface
|
i_clk, wb_cyc, ((wb_stb)&&(scop_sel)&&(wb_addr[2:1]==2'b11)), wb_we, wb_addr[0],
|
i_clk, wb_cyc, ((wb_stb)&&(scop_sel)&&(wb_addr[2:1]==2'b11)), wb_we, wb_addr[0],
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wb_data,
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wb_data,
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scop_zip_ack, scop_zip_stall, scop_zip_data,
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scop_zip_ack, scop_zip_stall, scop_zip_data,
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Line 696... |
Line 767... |
assign scop_zip_interrupt = 1'b0;
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assign scop_zip_interrupt = 1'b0;
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`endif
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`endif
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assign scop_interrupt = scop_flash_interrupt || scop_cfg_interrupt
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assign scop_interrupt = scop_flash_interrupt || scop_cfg_interrupt
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|| scop_ram_interrupt || scop_zip_interrupt;
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|| scop_two_interrupt || scop_zip_interrupt;
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assign scop_ack = scop_cfg_ack | scop_flash_ack | scop_ram_ack | scop_zip_ack;
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assign scop_ack = scop_cfg_ack | scop_flash_ack | scop_two_ack | scop_zip_ack;
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assign scop_stall = ((~wb_addr[2])?
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assign scop_stall = ((~wb_addr[2])?
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((wb_addr[1])?scop_flash_stall:scop_cfg_stall)
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((wb_addr[1])?scop_flash_stall:scop_cfg_stall)
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: ((wb_addr[1])?scop_ram_stall:scop_zip_stall));
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: ((wb_addr[1])?scop_two_stall:scop_zip_stall));
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assign scop_data = ((scop_cfg_ack)?scop_cfg_data
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assign scop_data = ((scop_cfg_ack)?scop_cfg_data
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: ((scop_flash_ack) ? scop_flash_data
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: ((scop_flash_ack) ? scop_flash_data
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: ((scop_ram_ack) ? scop_ram_data
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: ((scop_two_ack) ? scop_two_data
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: scop_zip_data)));
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: scop_zip_data)));
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reg r_sdcard_ack;
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initial r_sdcard_ack = 1'b0;
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always @(posedge i_clk)
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r_sdcard_ack <= (wb_cyc)&&(wb_stb)&&(sdcard_sel);
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assign sdcard_stall = 1'b0;
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assign sdcard_ack = r_sdcard_ack;
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assign sdcard_data = 32'h0000;
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endmodule
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endmodule
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// 0x8684 interrupts ...???
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// 0x8684 interrupts ...???
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No newline at end of file
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No newline at end of file
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