riscv
/
yosys
mirror of https://github.com/YosysHQ/yosys.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Fixes for OAI4 cell implementation 

Fixes #955 and the underlying issue in #954

Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2019-04-23 17:54:00 +01:00
parent d9daf09cf3
commit 742c2f245d
2 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/cellaigs.cc
View File

@ -453,7 +453,7 @@ Aig::Aig(Cell *cell)
int B = mk.inport("\\B");
int C = mk.inport("\\C");
int D = mk.inport("\\D");
int Y = mk.nand_gate(mk.nor_gate(A, B), mk.nor_gate(C, D));
int Y = mk.nand_gate(mk.or_gate(A, B), mk.or_gate(C, D));
mk.outport(Y, "\\Y");
goto optimize;
}

2
kernel/celltypes.h
View File

@ -464,7 +464,7 @@ struct CellTypes
if (cell->type == "$_AOI4_")
return eval_not(const_or(const_and(arg1, arg2, false, false, 1), const_and(arg3, arg4, false, false, 1), false, false, 1));
if (cell->type == "$_OAI4_")
return eval_not(const_and(const_or(arg1, arg2, false, false, 1), const_and(arg3, arg4, false, false, 1), false, false, 1));
return eval_not(const_and(const_or(arg1, arg2, false, false, 1), const_or(arg3, arg4, false, false, 1), false, false, 1));
log_assert(arg4.bits.size() == 0);
return eval(cell, arg1, arg2, arg3, errp);