class.ptf

一个比较有参考价值的sram IP核

# SOPC Builder class for SRAM Memory
# Written by www.51usb.com
CLASS generic_avalon_sram
{
	ASSOCIATED_FILES 
	{
		Add_Program = "default";
		Edit_Program = "default";
		Generator_Program = "--none--";
	}
	MODULE_DEFAULTS 
	{
		class = "generic_avalon_sram";
		class_version = "2.0";
		SLAVE s1
		{
			PORT_WIRING 
			{
				PORT data
				{
					width = "8";
					is_shared = "1";
					direction = "inout";
					type = "data";
				}
				PORT address
				{
					width = "15";
					is_shared = "1";
					direction = "input";
					type = "address";
				}
				PORT oe_n
				{
					width = "1";
					is_shared = "1";
					direction = "input";
					type = "read_n";
				}
				PORT we_n
				{
					width = "1";
					is_shared = "1";
					direction = "input";
					type = "write_n";
				}
				PORT ce_n
				{
					width = "1";
					is_shared = "0";
					direction = "input";
					type = "chipselect_n";
				}
				PORT bc_n
				{
					width = "2";
					is_shared = "1";
					direction = "input";
					#type = "byteenable_n";
					type = "milada";
				}
			}
			SYSTEM_BUILDER_INFO 
			{
				Bus_Type = "avalon_tristate";
				Is_Memory_Device = "1";
				Address_Alignment = "dynamic";
				Data_Width = "8";
				Address_Width = "15";
				Has_IRQ = "0";
				IRQ_Number = "N/A";
				#Read_Wait_States = "5";
				#Write_Wait_States = "4";
				Base_Address = "--unknown--";
			}
		}
		SYSTEM_BUILDER_INFO 
		{
			Is_Enabled = "1";
			Instantiate_In_System_Module = "0";
			Make_Memory_Model = "0";
		}
	}
	USER_INTERFACE 
	{
		USER_LABELS 
		{
			name = "SRAM Memory";
			technology = "Memory";
		}
		WIZARD_UI default
		{
			title = "SRAM Memory - {{ $MOD }}";
			CONTEXT 
			{
				SBI = "SLAVE s1/SYSTEM_BUILDER_INFO";
				SPWA = "SLAVE s1/PORT_WIRING/PORT address";
				SPWD = "SLAVE s1/PORT_WIRING/PORT data";
				SPWBC = "SLAVE s1/PORT_WIRING/PORT bc_n";
			}
			align = "center";
 			IMAGE
			{
				file="tx.gif";
				url="http://www.51usb.com";
			}
			TEXT
			{
				layout="flow";
				align="centre";
				title="SRAM Memory V1.0";
				font="bold";
			}
			GROUP
			{
				align="centre";
				title="Description";
				TEXT
				{
					layout="flow";
					align="centre";
					title="<P ALIGN=CENTER>
						Avalon Tri-State Slave Peripheral<br>
						for<br>
						Generic SRAM Memory.<br> 
						</P>";
				}
			}
			GROUP 
			{
				align = "left";
				title = "Size"; 
				COMBO address  
				{
					id = "addr";
					title = "Address Width:            ";
					key = "A";

					values = "13,14,15,16,17,18,19,20";

					suffix = "bits";
					DATA
					{
						$SBI/Address_Width = "$";
						$SPWA/width = "$";
					}
				}
				COMBO data
				{
					values = "8,16";
					id = "data";
					title = "Data Width:                   ";
					key = "D";
					suffix = "bits";
					DATA
					{
						$SBI/Data_Width = "$";
						$SPWD/width = "$";
					}
					$SPWBC/type = "{{ 	
						if ($SPWD/width == 16) 
							{'byteenable_n'}
						else 
							{''} 
						}}";
				}
			}
			GROUP 
			{
				align = "left";
				title = "Timing"; 
				EDIT 
				{
					width = 2;
					rows = 1;
					columns = 3;
					#glue = "0";
					suffix = "ns";
					type = "int";
					title = "Access Time:               ";
					DATA 
					{
						$$access_time = "$";
					}
					ACTION initialize
					{
						$$access_time = "20";
		        		}		
				}
			}
		        $$ns_per_cycle = "{{ 1E9/$SYS/clock_freq; }}";
		        $$wait_states = "{{ ceil ($$access_time / $$ns_per_cycle) - 1 }}";
		        $SBI/Read_Wait_States = "{{ $$wait_states }}";
			$SBI/Write_Wait_States = "{{ $$wait_states }}";
			
		        $$num_bytes = "{{ 2^($SBI/Address_Width) * $SBI/Data_Width / 8; }}";
		        $$num_Kbytes = "{{ $$num_bytes / 1024; }}";
      			$$message_capacity = "SRAM memory capacity: {{ $$num_Kbytes }} Kbytes ({{ $$num_bytes }} bytes)";
		        message = "{{ $$message_capacity; }}";
			$$waitstates_text = "{{ if ($$wait_states == 1) 'waitstate'; else 'waitstates'}}";
			$$message_waitstates = "Inserting {{ $SBI/Read_Wait_States }} {{ $$waitstates_text }}";
			message = "{{ 
					if ($$wait_states != 0)
						{$$message_waitstates}
					else
						{''}
				}}";
		}
	}
}