Hudson Soft HuC6270
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HuC6270 is a video display controller (VDC) developed by Hudson Soft and manufactured for Hudson Soft by Seiko Epson. The VDC was used in the PC Engine game console produced by NEC Corporation in 1987 and in the SuperGrafx and TurboGrafx 16 also developed by NEC.
Besides NEC, the VDC was used in two arcade games. The arcade version of Bloody Wolf ran on a custom version of the PC-Engine. Arcade hardware is missing the second 16-bit graphic chip known as the VCE, that is in the PC-Engine. This means the VDC directly accesses palette RAM and builds out the display signals/timing. A rare Capcom quiz-type arcade game also ran on a modified version of the SuperGrafx hardware, which used two VDCs.