Dear all:
I have two fundamental questions about ISA card share memory programming on RT-Linux.
Our ISA card uses a dual port ram (DPR) and an IRQ to communicate with computer
system. The DPR has a programmable basic address, now it is set to 0XC8000 and the
memory range from 0XC800:0000 to 0XC800:FFFF.
I want to use a real-time task to communicate with this ISA card through DPR.
Now are my questions trouble me:
1. Is it necessary to reserve this memory window to prevent system use it?
2. If it is necessary, how can I do?
Regards
Leo
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