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/vid_tandy.c

@@ -35,7 +35,8 @@ typedef struct tandy_t
         int vsynctime, vadj;
         uint16_t ma, maback;
         
-        int dispontime, dispofftime, vidtime;
+        int dispontime, dispofftime;
+	int64_t vidtime;
         int firstline, lastline;
 } tandy_t;