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DescriptionIBM VGA 90X8941 on PS55.jpg
English: VGA section on the System Board in IBM PS/55 model 5550-T released in 1988. You can see IBM's custom VLSI chip marked as VGA, 256 KB video RAM, the INMOS G171 RAMDAC, 25.175 and 28.322 kHz oscillators.
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