Synchronous SRAM - Instruction and Data memory

Hi,

this file "class.ptf" allows to use the onboard SSRAM as instruction and data memory on DSP Development Board:

# ##

CLASS dspboard_ssram

{

ASSOCIATED_FILES

{

Add_Program = "";

Edit_Program = "";

Generator_Program = "--none--";

}

USER_INTERFACE

{

USER_LABELS

{

name="SSRAM on 1s25 DSP Board";

technology = "Memory";

}

}

MODULE_DEFAULTS

{

class = "dspboard_ssram";

class_version = "2.0";

HDL_INFO

{

# An interface to this memory requires no additional files

# in the target project directory.

}

SLAVE s1

{

PORT_WIRING

{

PORT A

{

direction = "input";

is_shared = "1";

type = "address";

width = "18";

}

PORT D

{

direction = "inout";

is_shared = "1";

type = "data";

width = "32";

}

PORT adsc_n

{

direction = "input";

is_shared = "1";

type = "always0";

width = "1";

}

PORT adsp_n

{

direction = "input";

is_shared = "1";

type = "outputenable_n";

width = "1";

}

PORT adv_n

{

direction = "input";

is_shared = "1";

type = "always1";

width = "1";

}

PORT bw_n

{

direction = "input";

is_shared = "1";

type = "writebyteenable_n";

width = "4";

}

PORT bwe_n

{

direction = "input";

is_shared = "1";

type = "write_n";

width = "1";

}

PORT clk

{

direction = "input";

is_shared = "1";

type = "clk";

width = "1";

}

PORT chipselect_n

{

direction = "input";

type = "chipselect_n";

width = "1";

}

PORT mode

{

direction = "input";

is_shared = "1";

type = "always0";

width = "1";

}

PORT oe_n

{

direction = "input";

is_shared = "1";

type = "outputenable_n";

width = "1";

}

}

SYSTEM_BUILDER_INFO

{

Active_CS_Through_Read_Latency = "1";

Address_Alignment = "dynamic";

Address_Width = "18";

Base_Address = "--unknown--";

Bus_Type = "avalon_tristate";

Data_Width = "32";

Has_IRQ = "0";

IRQ_Number = "N/A";

Is_Memory_Device = "1";

Read_Latency = "1";

Read_Wait_States = "0";

Write_Wait_States = "0";

Setup_Time = "1";

Hold_Time = "0";

}

}

SYSTEM_BUILDER_INFO

{

Is_Enabled = "1";

Instantiate_In_System_Module = "0";

}

}

}

# ##

Hope that helps!

Jochen

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