Timer counters now 64-bit;

Cleaned up floppy code a lot and reverted to single poller;
Fixed segment present bit and limit checking at read/write within segment;
The ASUS boards now have memregs too;
RTC code improved based on suggestion by Sarah Walker;
Fixed SVGA odd/even emulation and added chain odd/even support;
Removed non-existent CPU's.

src/keyboard_at.c

@@ -1,3 +1,5 @@
+#include <stdint.h>
+
 #include "ibm.h"
 #include "io.h"
 #include "mem.h"