diff options
Diffstat (limited to 'ecp5/pack.cc')
| -rw-r--r-- | ecp5/pack.cc | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/ecp5/pack.cc b/ecp5/pack.cc index 9c3bb617..0872ae58 100644 --- a/ecp5/pack.cc +++ b/ecp5/pack.cc @@ -3014,6 +3014,29 @@ void Arch::assignArchInfo() ci->sliceInfo.has_l6mux = true; } else if (ci->type == id_DP16KD) { ci->ramInfo.is_pdp = (int_or_default(ci->params, id("DATA_WIDTH_A"), 0) == 36); + + // Output register mode (REGMODE_{A,B}). Valid options are 'NOREG' and 'OUTREG'. + std::string regmode_a = str_or_default(ci->params, id("REGMODE_A"), "NOREG"); + if (regmode_a != "NOREG" && regmode_a != "OUTREG") + log_error("DP16KD %s has invalid REGMODE_A configuration '%s'\n", ci->name.c_str(this), + regmode_a.c_str()); + std::string regmode_b = str_or_default(ci->params, id("REGMODE_B"), "NOREG"); + if (regmode_b != "NOREG" && regmode_b != "OUTREG") + log_error("DP16KD %s has invalid REGMODE_B configuration '%s'\n", ci->name.c_str(this), + regmode_b.c_str()); + ci->ramInfo.is_output_a_registered = regmode_a == "OUTREG"; + ci->ramInfo.is_output_b_registered = regmode_b == "OUTREG"; + + // Based on the REGMODE, we have different timing lookup tables. + if (!ci->ramInfo.is_output_a_registered && !ci->ramInfo.is_output_b_registered) { + ci->ramInfo.regmode_timing_id = id_DP16KD_REGMODE_A_NOREG_REGMODE_B_NOREG; + } else if (!ci->ramInfo.is_output_a_registered && ci->ramInfo.is_output_b_registered) { + ci->ramInfo.regmode_timing_id = id_DP16KD_REGMODE_A_NOREG_REGMODE_B_OUTREG; + } else if (ci->ramInfo.is_output_a_registered && !ci->ramInfo.is_output_b_registered) { + ci->ramInfo.regmode_timing_id = id_DP16KD_REGMODE_A_OUTREG_REGMODE_B_NOREG; + } else if (ci->ramInfo.is_output_a_registered && ci->ramInfo.is_output_b_registered) { + ci->ramInfo.regmode_timing_id = id_DP16KD_REGMODE_A_OUTREG_REGMODE_B_OUTREG; + } } } for (auto net : sorted(nets)) { |