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In page Pertec Computer:

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Pertec XL-40, introduced in 1977, was a more successful successor of Pertec PCC-2100.[1] The XL-40 machine used custom 16-bit processors built from the TI3000 or AMD2900 slices, up to 512 KB operating memory and dedicated master-capable DMA controllers for tape units, floppy and rigid disk units, printers, card reader and terminals.