diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/mvme5500/README.irq')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mvme5500/README.irq | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/c/src/lib/libbsp/powerpc/mvme5500/README.irq b/c/src/lib/libbsp/powerpc/mvme5500/README.irq deleted file mode 100644 index fb31c4a5c3..0000000000 --- a/c/src/lib/libbsp/powerpc/mvme5500/README.irq +++ /dev/null @@ -1,20 +0,0 @@ -README.irq : Shuchen Kate Feng <feng1@bnl.gov>, Sept. 2, 2007 - -As per implementation in shared PPC code, -the BSPirqPrioTable[96] listed in irq_init.c is where the -software developers can change the levels of priority -for all the interrupts based on the need of their -applications. The IRQs can be eanbled dynamically via the -BSP_enable_pic_irq(), or disbaled dynamically via the -BSP_disable_pic_irq(). - - -Support for run-time priority setup could be -added easily, but there is no action taken yet due to concerns -over computer security at VME CPU level. - - -The software developers are forbidden to setup picIsrTable[], -as it is a powerful engine for the BSP to find the pending -highest priority IRQ at run time. It ensures the fastest/faster -interrupt service to the highest/higher priority IRQ, if pending. |