Abstract: An in-order state queue holds store tags as in-order information about store instructions. A temporal store cache, which uses store addresses as indexes, holds store tags and store values. A first retrieving unit retrieves store tags preceding a load tag. A second retrieving unit compares the store tag read from the temporal store cache according to the address for the load instruction with the store tag from the first retrieving unit and, when they coincide with each other, outputs a hit signal.

Abstract: An electroplating apparatus capable of forming a film of a uniform thickness on a substrate for printed wiring irrespective of a size of the substrate. Insoluble anode plates are arranged in a plurality of pairs in an electroplating tank in a manner to be juxtaposed to each other along a transfer passage along which the substrate is horizontally transferred and electrically independent from each other for every pair. The insoluble anode plates in each pair are arranged so as to be vertically spaced from each other with the transfer passage being interposed therebetween and are independently connected to an anode terminal of each of rectifiers. Cathode terminals of the rectifiers are electrically connected together to clips for holding the substrate. Electroplating on the substrate is carried out by feeding only the insoluble anode plates contained in a plane of projection of the substrate defined in a vertical direction of the substrate with electricity.

Abstract: The present invention includes an aqueous acidic chromate solution, suitable for forming colored chromate coatings on zinc-nickel alloy electrodeposits containing up to about 15% by weight nickel, which solutions have a pH within the range of about 1.3 to about 2.7, a hexavalent chromium concentration of at least 0.5 grams per liter, and preferably about 0.5 to about 100 grams per liter, and which contain sulfate in a weight ratio of SO.sub.4 :Cr.sup.+6 of about 0.025-1.5:1.The zinc-nickel alloy electrodeposits are preferably immersed in the chromating solution for a period sufficient to form the desired colored chromate coating. In some instances, a flash electrodeposit of zinc may be applied to the zinc-nickel alloy electrodeposit before it is immersed in the chromating solution.