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| | Reference.com/Encyclopedia/SuperGrafx |
 | | However the final machine was named SuperGrafx, was released earlier than expected, in late 1989, only provided modestly enhanced graphics over the original PC-Engine, had audio that was the same as the PC-Engine and no 16-bit CPU, just the same one as the PC-Engine. |
 | | The enhancements SuperGrafx did have: Compared to the PC-Engine, SuperGrafx has four times the amount of work RAM for the main CPU, a second video chip with its own video RAM, and a priority controller chip that allowed the output of both video chips to be combined in various ways. |
 | | SuperGrafx had support for 2 independantly scrolling background layers, like the Sega Megadrive/Genesis, instead of the PC-Engine's single layer. |
| www.reference.com /browse/wiki/SuperGrafx (546 words) |
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