1 files changed, 51 insertions, 0 deletions

diff --git a/techlibs/xilinx/xc3sa_brams.txt b/techlibs/xilinx/xc3sa_brams.txt
new file mode 100644
index 000000000..22a62bd2c
--- /dev/null
+++ b/techlibs/xilinx/xc3sa_brams.txt
@@ -0,0 +1,51 @@
+# Spartan 3A block RAM rules.
+
+bram $__XILINX_RAMB16
+  init 1
+  abits 11     @a11d9
+  dbits  9     @a11d9
+  abits 12     @a12d4
+  dbits  4     @a12d4
+  abits 13     @a13d2
+  dbits  2     @a13d2
+  abits 14     @a14d1
+  dbits  1     @a14d1
+  groups 2
+  ports  1 1
+  wrmode 0 1
+  enable 1 1
+  transp 0 0
+  clocks 2 3
+  clkpol 2 3
+endbram
+
+bram $__XILINX_RAMB16BWE
+  init 1
+  abits  9     @a9d36
+  dbits 36     @a9d36
+  abits 10     @a10d18
+  dbits 18     @a10d18
+  groups 2
+  ports  1 1
+  wrmode 0 1
+  enable 1 4   @a9d36
+  enable 1 2   @a10d18
+  transp 0 0
+  clocks 2 3
+  clkpol 2 3
+endbram
+
+match $__XILINX_RAMB16
+  min bits 4096
+  min efficiency 5
+  shuffle_enable B
+  make_transp
+  or_next_if_better
+endmatch
+
+match $__XILINX_RAMB16BWE
+  min bits 4096
+  min efficiency 5
+  shuffle_enable B
+  make_transp
+endmatch