From 5088967b9db6e8bcc5feddbea6f53da5b33cb77c Mon Sep 17 00:00:00 2001
From: Nathan Ringo <nathan@remexre.com>
Date: Tue, 24 Sep 2024 00:47:49 -0500
Subject: Another reorg.

---
 fpga/src/CPU.bs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 fpga/src/CPU.bs

(limited to 'fpga/src/CPU.bs')

diff --git a/fpga/src/CPU.bs b/fpga/src/CPU.bs
new file mode 100644
index 0000000..566ae92
--- /dev/null
+++ b/fpga/src/CPU.bs
@@ -0,0 +1,20 @@
+package CPU where
+
+import GetPut
+
+-- | The interface the CPU exposes.
+interface CPU =
+  -- UART
+  uart_tx :: Get (Bit 8)
+  uart_rx :: Put (Bit 8)
+
+mkCPU :: Module CPU
+mkCPU = module
+  byte :: Reg (Bit 8) <- mkReg 0
+
+  interface CPU
+    uart_tx = toGet byte
+    uart_rx = toPut $ \b -> do
+      byte := b
+
+-- vim: set ft=haskell :
-- 
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