Posted on April 22, 2005 at 03:23When the BIOS executes the memory test, does it accelerate the test when you press ? If not, you have to pay atention to the keyboard interface. Possibly your IRQ mapper.
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I check it , it is right, because the IRQ1 goes to HIGH when I press the key. And the BIOS running slowly . Whether signal of DMA or IRQ have the influence or not?
when power-on the keyboard's 'numlock'/capslocks'/'scrolllock'
led flash once and turn off, (the IRQ1 goes to HIGH then goes to LOW )
follows is my cpld equations
IRQMUX[0:3]
assign IRQMUX=
( ISACLK==0 && ISACLK2==0 )?{ 1'b0, IRQ4, IRQ8, IRQ12 }:
( ISACLK==0 && ISACLK2==1 )?{ IRQ1, IRQ5, IRQ9, 1'b0 }:
( ISACLK==1 && ISACLK2==0 )?{ 1'b0, IRQ6, IRQ10, IRQ14 }://1'b0, IRQ6 10, 14
( ISACLK==1 && ISACLK2==1 )?{ IRQ3, IRQ7, IRQ11, IRQ15 }://3,7,11,15
4'h0;
[ This message was edited by: vehicle007 on 22-04-2005 09:37 ]
[ This message was edited by: vehicle007 on 22-04-2005 11:41 ]
