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/serial.h

@@ -22,7 +22,7 @@ typedef struct
         uint8_t fifo[256];
         int fifo_read, fifo_write;
         
-        int recieve_delay;
+        int64_t recieve_delay;
 } SERIAL;
 
 extern SERIAL serial1, serial2;