From c4ee594a1c296fe120dbda5c34129803d1398463 Mon Sep 17 00:00:00 2001
From: Stephen Crane <jscrane@gmail.com>
Date: Thu, 13 Sep 2018 12:56:54 +0100
Subject: [PATCH] serial framing config

---
 acia.cpp | 30 +++++++++++++++++++++++++++++-
 acia.h   |  9 +++++++++
 2 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/acia.cpp b/acia.cpp
index a6cfdde..2e80462 100644
--- a/acia.cpp
+++ b/acia.cpp
@@ -8,8 +8,36 @@ void acia::operator=(uint8_t b) {
 		_device->write(b);
 		return;
 	}
-	if ((b & cd_mask) == 0x03)
+	if ((b & cd_mask) == reset) {
 		_device->reset();
+		return;
+	}
+	switch (b & ws_mask) {
+	case ws7e2:
+		_device->framing(7, 2, even);
+		break;
+	case ws7o2:
+		_device->framing(7, 2, odd);
+		break;
+	case ws7e1:
+		_device->framing(7, 1, even);
+		break;
+	case ws7o1:
+		_device->framing(7, 1, odd);
+		break;
+	case ws8n2:
+		_device->framing(8, 2, none);
+		break;
+	case ws8n1:
+		_device->framing(8, 1, none);
+		break;
+	case ws8e1:
+		_device->framing(8, 1, even);
+		break;
+	case ws8o1:
+		_device->framing(8, 1, odd);
+		break;
+	};
 	// FIXME: more
 }
 
diff --git a/acia.h b/acia.h
index 15aa8d1..91bbd62 100644
--- a/acia.h
+++ b/acia.h
@@ -1,10 +1,19 @@
 #ifndef __ACIA_H__
 #define __ACIA_H__
 
+enum parity {
+	none,
+	even,
+	odd,
+};
+
 class SerialDevice {
 public:
 	virtual void reset() {}
+	virtual void framing(unsigned data_bits, unsigned stop_bits, parity p) {}
+
 	virtual void write(uint8_t) {}
+
 	virtual uint8_t read() {}
 	virtual bool more() { return false; }
 };