SetInterruptPriorities()

void SRL::System::SetInterruptPriorities ( const InterruptPriorityTable & priorityTable )

inlinestatic

Program the SCU interrupt routine priority table.

Parameters

priorityTable

32-entry table of packed SR | mask values

Calls the BIOS entry at 0x6000280. Requires SCU revision 2.1+ (version register at 0x25FE00C4 >= 3). The table is copied into the BIOS work area and remains active until overwritten or reset.

Warning

This is a dangerous operation. If the table contains inconsistent priority settings the system will crash. No validation is performed on the table content.

Example:

System::InterruptPriorityTable priorities;
priorities[0]  = 0x00f0ffff;  // V-Blank In
priorities[1]  = 0x00e0fffe;  // V-Blank Out
priorities[9]  = 0x0060ffff;  // DMA2 (highest priority)
priorities[10] = 0x0050fdff;  // DMA1
priorities[11] = 0x0050f9ff;  // DMA0
System::SetInterruptPriorities(priorities);

See also

InterruptPriorityTable for the entry format