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Length of IOWR

Length of IOWR

Length of IOWR

(OP)
On an 800 MHz PC I measured the length of the IOWR and IORD--- both were about 1 microS.

Is there a way to reduce it ?

<nbucska@pcperipherals.com>

RE: Length of IOWR

That is pretty slow, wht kind of processor and motherboard/bios ?, software wise you can muck w/the low level r/w code, but it probally won't get you much, you will probally have to review the hardware 'design' and see if there is anything you can do there.  Also did you use a logic analyzer or scope to determine the timing ???  

RE: Length of IOWR

(OP)
Scope, DOS, 800 MHz -- I think -- PENTIUM. Program assy:

     mov   dx,port
     mov   al,data
lab: out dx,al
     jp lab
Obviously something inserts a few hundred clk cycles.
I know the 188/186 has programmable wait states
but not hundreds....

<nbucska@pcperipherals.com>

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