Comtrol eCos - Manual (Page 232)

Chapter 5. Installation and Testing
#define CYGNUM_HAL_INTERRUPT_P_SERR 47
#define CYGNUM_HAL_INTERRUPT_S_SERR 48
The data passed to the ISR is pulled from a data table (hal_interrupt_data) which immediately follows the
interrupt vector table. With 49 interrupts, the data table starts at address 0xA000A0C8.
An application may create a normal C function with the above prototype to be an ISR. Just poke its address into the
table at the correct index and enable the interrupt at its source. The return value of the ISR is ignored by RedBoot.
Memory Maps
The first level page table is located at 0xa0004000. Two second level tables are also used. One second level table is
located at 0xa0008000 and maps the first 1MB of flash. The other second level table is at 0xa0008400, and maps
the first 1MB of SDRAM.
NOTE: The virtual memory maps in this section use a C and B column to indicate whether or not the region is
cached (C) or buffered (B).
Physical Address Range Description
----------------------- ----------------------------------
0x00000000 - 0x00000fff flash Memory
0x00001000 - 0x00001fff 80312 Internal Registers
0x00002000 - 0x007fffff flash Memory
0x00800000 - 0x7fffffff PCI ATU Outbound Direct Window
0x80000000 - 0x83ffffff Primary PCI 32-bit Memory
0x84000000 - 0x87ffffff Primary PCI 64-bit Memory
0x88000000 - 0x8bffffff Secondary PCI 32-bit Memory
0x8c000000 - 0x8fffffff Secondary PCI 64-bit Memory
0x90000000 - 0x9000ffff Primary PCI IO Space
0x90010000 - 0x9001ffff Secondary PCI IO Space
0x90020000 - 0x9fffffff Unused
0xa0000000 - 0xbfffffff SDRAM
0xc0000000 - 0xefffffff Unused
0xf0000000 - 0xffffffff 80200 Internal Registers
Virtual Address Range C B Description
----------------------- - - ----------------------------------
0x00000000 - 0x00000fff Y Y SDRAM
0x00001000 - 0x00001fff N N 80312 Internal Registers
0x00002000 - 0x007fffff Y N flash Memory
0x00800000 - 0x7fffffff N N PCI ATU Outbound Direct Window
0x80000000 - 0x83ffffff N N Primary PCI 32-bit Memory
0x84000000 - 0x87ffffff N N Primary PCI 64-bit Memory
0x88000000 - 0x8bffffff N N Secondary PCI 32-bit Memory
0x8c000000 - 0x8fffffff N N Secondary PCI 64-bit Memory
0x90000000 - 0x9000ffff N N Primary PCI IO Space
0x90010000 - 0x9001ffff N N Secondary PCI IO Space
0xa0000000 - 0xbfffffff Y Y SDRAM
128