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nexus: Add SEIO18 support

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2020-01-13 12:17:34 +00:00
parent 44f98c545b
commit f8f3ee06c7
1 changed files with 19 additions and 0 deletions
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19
nexus/fasm.cc
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@ -205,6 +205,23 @@ struct NexusFasmWriter
write_bit(stringf("BASE_TYPE.%s_%s", iodir, str_or_default(cell->attrs, id_IO_TYPE, "LVCMOS33").c_str()));
pop(2);
}
void write_io18(const CellInfo *cell)
{
BelId bel = cell->bel;
push_tile(bel.tile);
push_belname(bel);
push("SEIO18");
const NetInfo *t = get_net_or_empty(cell, id_T);
bool is_input = false, is_output = false;
if (t == nullptr || t->name == ctx->id("$PACKER_VCC_NET")) {
is_input = true;
} else if (t->name == ctx->id("$PACKER_GND_NET")) {
is_output = true;
}
const char *iodir = is_input ? "INPUT" : (is_output ? "OUTPUT" : "BIDIR");
write_bit(stringf("BASE_TYPE.%s_%s", iodir, str_or_default(cell->attrs, id_IO_TYPE, "LVCMOS18H").c_str()));
pop(3);
}
void operator()()
{
// Write routing
@ -221,6 +238,8 @@ struct NexusFasmWriter
write_ff(ci);
else if (ci->type == id_SEIO33_CORE)
write_io33(ci);
else if (ci->type == id_SEIO18_CORE)
write_io18(ci);
blank();
}
}