Intel should hand over confidential documents to arch-rival AMD in the court case surrounding its alleged monopolisitc abuse, a US federal court has recommended.

The decision by a "special master" of the court comes following an appeal by AMD against a previous decision that Intel was not obliged to hand the records over. Vincent Poppiti of the US District Court of Delaware agreed with AMD that even though the records concern activities outside the US, they impacted sales within the US and so they should be handed over.

In September, District Court Judge Joseph Farnan had ruled that Intel would not have to share those records, as US courts have no jurisdiction over actions in other countries. The final decision will now be taken by a judge on 12 January.

AMD has accused that Intel of using its 80 percent share of the worldwide microprocessor market to violate anti-trust laws through coercive acts such as threatening to withhold incentive payments to PC vendors if they specified AMD chips in their products.

Poppiti reasoned that the market for x86 microprocessors is global, so Intel's behaviour worldwide could serve as evidence in a US anti-trust case.

"We are encouraged that the special master recognises the importance of obtaining all evidence of Intel's wrongdoing, regardless of where it occurs, to demonstrate the impact it has had on AMD's domestic and export business," said an AMD spokesman.

Intel lawyers are still reviewing Poppiti's recommendation, and have not yet decided whether they will file additional arguments by 27 December, said an Intel spokesman.