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Generate delay devices for sign-extend devices. 

It is possible for signe-extend to have a delay attached to it. (Same
for repeat.) Handle it like other LPM devices, by stuffing a .delay
device into the output path of the device, if appropriate.
This commit is contained in:
Stephen Williams 2008-09-06 18:05:18 -07:00
parent dd47599d55
commit 6411e96193
2 changed files with 15 additions and 5 deletions
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10
design_dump.cc
View File

@ -567,8 +567,14 @@ void NetReplicate::dump_node(ostream&o, unsigned ind) const
void NetSignExtend::dump_node(ostream&o, unsigned ind) const
{
o << setw(ind) << "" << "NetSignExtend: "
<< name() << " output width=" << width_ << endl;
o << setw(ind) << "" << "NetSignExtend: " << name();
if (rise_time())
o << " #(" << *rise_time()
<< "," << *fall_time()
<< "," << *decay_time() << ")";
else
o << " #(.,.,.)";
o << " output width=" << width_ << endl;
dump_node_pins(o, ind+4);
dump_obj_attr(o, ind+4);
}

10
tgt-vvp/vvp_scope.c
View File

@ -1650,15 +1650,19 @@ static void draw_lpm_re(ivl_lpm_t net, const char*type)
static void draw_lpm_repeat(ivl_lpm_t net)
{
fprintf(vvp_out, "L_%p .repeat %u, %u, %s;\n", net,
const char*dly = draw_lpm_output_delay(net);
fprintf(vvp_out, "L_%p%s .repeat %u, %u, %s;\n", net, dly,
ivl_lpm_width(net), ivl_lpm_size(net),
draw_net_input(ivl_lpm_data(net,0)));
}
static void draw_lpm_sign_ext(ivl_lpm_t net)
{
fprintf(vvp_out, "L_%p .extend/s %u, %s;\n",
net, ivl_lpm_width(net),
const char*dly = draw_lpm_output_delay(net);
fprintf(vvp_out, "L_%p%s .extend/s %u, %s;\n",
net, dly, ivl_lpm_width(net),
draw_net_input(ivl_lpm_data(net,0)));
}