---
title: IOPhysicalAddress64
framework: driverkit
role: symbol
role_heading: Type Alias
path: driverkit/iophysicaladdress64
---

# IOPhysicalAddress64

A 64-bit address in physical memory.

## Declaration

```occ
typedef uint64_t IOPhysicalAddress64;
```

## See Also

### Addresses

- [IOVirtualAddress](driverkit/iovirtualaddress.md)
- [IOPhysicalAddress](driverkit/iophysicaladdress.md)
- [IOPhysicalAddress32](driverkit/iophysicaladdress32.md)
- [IOPhysicalLength](driverkit/iophysicallength.md)
- [IOPhysicalLength32](driverkit/iophysicallength32.md)
- [IOPhysicalLength64](driverkit/iophysicallength64.md)
- [IOCacheMode](driverkit/iocachemode.md)