From 3b405d985e789ecf0082f724d2d62d3752e4b60c Mon Sep 17 00:00:00 2001 From: "N. Engelhardt" Date: Thu, 17 Oct 2019 21:33:54 +0200 Subject: Call memory_dff before DSP mapping to reserve registers (fixes #1447) --- techlibs/ice40/synth_ice40.cc | 1 + 1 file changed, 1 insertion(+) (limited to 'techlibs/ice40') diff --git a/techlibs/ice40/synth_ice40.cc b/techlibs/ice40/synth_ice40.cc index b66c6bf57..c942126e1 100644 --- a/techlibs/ice40/synth_ice40.cc +++ b/techlibs/ice40/synth_ice40.cc @@ -273,6 +273,7 @@ struct SynthIce40Pass : public ScriptPass run("opt_expr"); run("opt_clean"); if (help_mode || dsp) { + run("memory_dff"); run("techmap -map +/mul2dsp.v -map +/ice40/dsp_map.v -D DSP_A_MAXWIDTH=16 -D DSP_B_MAXWIDTH=16 " "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 -D DSP_Y_MINWIDTH=11 " "-D DSP_NAME=$__MUL16X16", "(if -dsp)"); -- cgit v1.2.3