.. _memorymap:

Memory Map
==========

Global memory map:

+------------+------------+-----------------------+
| Start      | Size       | Device                |
+============+============+=======================+
| 0x00000000 | 0x00040000 | Main block RAM (BRAM) |
+------------+------------+-----------------------+
| 0x10000000 | 0x01000000 | student_device_peri   |
+------------+------------+-----------------------+
| 0x1e000000 | 0x00001000 | dbgmem (RISC-V debug) |
+------------+------------+-----------------------+
| 0x1f000000 | 0x00001000 | rv_timer              |
+------------+------------+-----------------------+
| 0x1f001000 | 0x00001000 | ddr_ctrl              |
+------------+------------+-----------------------+
| 0x1f002000 | 0x00001000 | regdemo               |
+------------+------------+-----------------------+
| 0x20000000 | 0x10000000 | student_device_fast   |
+------------+------------+-----------------------+
| 0x80000000 | 0x20000000 | External DDR3 memory  |
+------------+------------+-----------------------+

Main block RAM layout:

+------------+-----------------------------------------+
| Addr       | Function                                |
+============+=========================================+
| 0x00000000 | Begin BRAM                              |
+------------+-----------------------------------------+
| 0x00000100 | Begin .lib sections (libc)              |
+------------+-----------------------------------------+
|            | User-defined program .text, .data, .bss |
+------------+-----------------------------------------+
|            | Free space                              |
+------------+-----------------------------------------+
|            | Stack (growing downward)                |
+------------+-----------------------------------------+
| 0x0003F000 | begin hostio (3072 bytes)               |
+------------+-----------------------------------------+
| 0x0003FC00 | OpenOCD work area (1024 bytes)          |
+------------+-----------------------------------------+
| 0x00040000 | End BRAM                                |
+------------+-----------------------------------------+