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diff --git a/private/ntos/nthals/halxlt/alpha/alcor.h b/private/ntos/nthals/halxlt/alpha/alcor.h
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+++ b/private/ntos/nthals/halxlt/alpha/alcor.h
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+/*++
+
+Copyright (c) 1994  Digital Equipment Corporation
+
+Module Name:
+
+    alcor.h
+
+Abstract:
+
+    This file contains definitions specific to the Alcor platform
+
+Author:
+
+    Steve Brooks    11-Jul-1994
+
+Environment:
+
+    Kernel mode
+
+Revision History:
+
+
+--*/
+
+#ifndef _ALCORH_
+#define _ALCORH_
+
+//
+// Include definitions for the components that make up Alcor.
+//
+
+#include "axp21164.h"               // 21164 (EV5) microprocessor definitions
+#include "cia.h"                    // CIA controller definitions
+#include "gru.h"                    // GRU controller definitions
+
+//
+// Define number of PCI, EISA, and combo slots
+//
+
+#define NUMBER_EISA_SLOTS 4
+#define NUMBER_PCI_SLOTS 5
+#define NUMBER_COMBO_SLOTS 1
+
+//
+// Define the data and csr ports for the I2C bus and OCP.
+//
+
+#define I2C_INTERFACE_DATA_PORT                  0x550
+#define I2C_INTERFACE_CSR_PORT                   0x551
+#define I2C_INTERFACE_LENGTH                     0x2
+#define I2C_INTERFACE_MASK                       0x1
+
+//
+// Define the index and data ports for the NS Super IO chip.
+//
+
+#define SUPERIO_INDEX_PORT                       0x398
+#define SUPERIO_DATA_PORT                        0x399
+#define SUPERIO_PORT_LENGTH                      0x2
+
+//
+// PCI bus address values:
+//
+
+#define PCI_MAX_LOCAL_DEVICE        12
+#define PCI_MAX_INTERRUPT_VECTOR    (MAXIMUM_PCI_VECTOR - PCI_VECTORS)
+
+//
+// Define numbers and names of cpus.
+//
+
+#define HAL_PRIMARY_PROCESSOR ((ULONG)0)
+#define HAL_MAXIMUM_PROCESSOR ((ULONG)0)
+
+//
+// Define default processor frequency.
+//
+
+#define DEFAULT_PROCESSOR_FREQUENCY_MHZ (250)
+
+//
+// Define Alcor-specific routines that are really macros for performance.
+//
+
+#define HalpAcknowledgeEisaInterrupt(x) (UCHAR)(INTERRUPT_ACKNOWLEDGE(x))
+
+//
+// Define the per-processor data structures allocated in the PCR.
+//
+
+typedef struct _ALCOR_PCR{
+    ULONGLONG       HalpCycleCount;         // 64-bit per-processor cycle count
+    ULONG           Reserved[3];            // Pad ProfileCount to offset 20
+    EV5ProfileCount ProfileCount;           // Profile counter state
+    } ALCOR_PCR, *PALCOR_PCR;
+
+#define HAL_PCR ( (PALCOR_PCR)(&(PCR->HalReserved)) )
+
+#endif //_ALCORH_