Added the NCR 53C810 PCI SCSI controller;

Fixed the behavior of the CD-ROM GET CONFIGURATION command when unimplemented features are requested;
Fixed the behavior of the CD-ROM READ DVD STRUCTURE command in some situations and made it correctly report 05/30/02 for incompatible format;
Reworked the PS/2 Model 80 Type 2 memory handling a bit;
The emulator now allocates the few MB of space needed for pages for the entire 4 GB RAM space at the startup and only memset's it to 0 on hard reset - should make sure DMA page reads from/writes to memory-mapped devices no longer crash the emulator on invalidating the memory range;
Applied app applicable PCem patches;
The PS/1 Model 2133 now also applies PS/2-style NMI mask handling - fixes the 486 recompiler on this machine;
Added the missing #include of "cpu/cpu.h" in io.c, fixes compiling when I/O tracing is enabled.

src/scsi/scsi.c

@@ -34,6 +34,7 @@
 #include "scsi_aha154x.h"
 #include "scsi_buslogic.h"
 #include "scsi_ncr5380.h"
+#include "scsi_ncr53c810.h"
 #include "scsi_x54x.h"
 
 
@@ -73,6 +74,7 @@ static SCSI_CARD scsi_cards[] = {
     { "[MCA] Adaptec AHA-1640",	"aha1640",	&aha1640_device,      x54x_device_reset   },
     { "[MCA] BusLogic BT-640A",	"bt640a",	&buslogic_640a_device,BuslogicDeviceReset },
     { "[PCI] BusLogic BT-958D",	"bt958d",	&buslogic_pci_device, BuslogicDeviceReset },
+    { "[PCI] NCR 53C810",	"ncr53c810",	&ncr53c810_pci_device,NULL		  },
     { "[VLB] BusLogic BT-445S",	"bt445s",	&buslogic_445s_device,BuslogicDeviceReset },
     { "",			"",		NULL,		      NULL		  },
 };