Int 08h

Hello,Im Jony,
I Want To Make A Device Driver Or .Sys File, Which Increase 8253 Pit Counter 0 - Clock Speed,
I Try Simple Device Driver, And It Worked Only In Ms-Dos Mode, Not In Dos-Prompt, And I Think, To Make It Work In Dos-Prompt, I Have To Create/Modify/Append Old Int 08h, But I Can't Copy 1-By-1 Byte From Debug Int 08h, So If Any One Know, How I Can Get Whole Interrupt Rountine In Few Seconds, So Then I Modify It,
Im Waiting!
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