From fc7022286a14e7325907fb4e77aa44330037229b Mon Sep 17 00:00:00 2001
From: miguel <miguel@miguel-acer.softwarefools.com>
Date: Mon, 25 Aug 2014 16:48:00 +0200
Subject: minor changes and some notes on keyboard driver

---
 README.md       | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 bochsrc         |  2 +-
 kernel/kernel.c |  1 +
 3 files changed, 53 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index f3be90c..0bd2a18 100644
--- a/README.md
+++ b/README.md
@@ -116,6 +116,57 @@ REFERENCES
 MY NOTES BELOW THIS LINE
 ========================
 
+Keyboard Driver
+---------------
+
+//some thoughts on redesign of the keyboard driver
+//use uint8_t for proc_pos and buff_pos and a BUF_SIZE of 256 for auto wrap!?
+
+// kb input ringbuffer
+#define BUF_SIZE 256
+kb_scancode kb_buff[BUF_SIZE];
+
+buff_pos=0;
+proc_pos=0;
+buffered=0;
+
+void kb_irq()
+{
+    cli
+
+    //we get one interrupt for EACH scancode!
+    kb_scancode val=get_scancode();
+
+    // think about race condition if called while inside kb_proc();
+    if(buffered+1<BUF_SIZE)
+    {
+	kb_buff[buff_pos]=val; 
+	buff_pos++;	    
+	buffered++;
+    }
+    else
+    {
+	//kb ring buffer is full;
+    }
+    sti
+
+}
+
+
+void kb_proc()
+{
+    if(proc_pos!=buff_pos)
+    {
+	kb_scancode val=kb_buff[proc_pos];
+
+	proc_pos++;
+	buffered--;
+
+	stdin(scancode_to_char(val));
+	
+    }
+}
+
 Linux Startup x86
 -----------------
 ~ ontogeny recapitulates phylogeny ~
diff --git a/bochsrc b/bochsrc
index d733635..732b716 100644
--- a/bochsrc
+++ b/bochsrc
@@ -283,7 +283,7 @@ vga: extension=vbe
 # The optional parameter 'write_protected' can be used to control the media
 # write protect switch. By default it is turned off.
 #=======================================================================
-floppya: 1_44=/home/miguel/_int/dev/FoolOs/FoolOS.img, status=inserted
+floppya: 1_44=./FoolOS.img, status=inserted
 #floppya: image=../1.44, status=inserted
 #floppya: 1_44=/dev/fd0H1440, status=inserted
 #floppya: 1_2=../1_2, status=inserted
diff --git a/kernel/kernel.c b/kernel/kernel.c
index f4c9653..16028fd 100644
--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -20,6 +20,7 @@ void int_test_handler()
     X86_IRQ_BEGIN
 
     scr_put_string("inside software interrupt handler 88");
+    sleep(30);
 
     X86_IRQ_END
 
-- 
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