ModuleWare Reference Guide - Hornad

Memory PartsDual Port RAM (ram2p)Functionram_table is a table of internal locations. The number of locations are given by the parameterram_size:ram_table(addr0) = din0 if iena0 = 1. and addr0 < ram_sizeram_table(addr1) = din1 if iena1 = 1. and addr1 < ram_sizedout0= ram_table(addr0)= ZZ...if oena0 = 1 and addr0 < ram_sizeotherwisedout1= ram_table(addr1)= ZZ...addr0_error = 0= 1addr1_error = 0= 1Parametersif oena1 = 1 and addr1 < ram_sizeotherwiseif addr0 < ram_sizeotherwiseif addr1 < ram_sizeotherwiseTable 9-1. Dual Port RAM ParametersParameter Values Defaultdin0, din1, dout0, dout1addr0addr1addr0_typeaddr1_typeram_sizePort widths (must be > 0)Port width (must be > 0)Port width (must be > 0)Enabled,DisabledEnabled,DisabledNumber of memory locations in the RAM tableAutomaticAutomaticAutomaticEnabledEnabled8Design Rule Checks• An error is issued if the width of any port cannot be determined or if ports iena0, iena1,oena0, oena1, addr0_error and addr1_error do not have a fixed width of 1.• A warning is issued and HDL generation fails for this part if any of ports din0, din1, iena0,oena0, dout0, addr1, iena1, oena1 or dout1 are not connected.ModuleWare Reference Manual, Library Version 1.9 207September 18, 2008