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| sd:history [2026/05/02 22:49] – appledog | sd:history [2026/05/02 22:49] (current) – appledog |
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| === Audiovisual Magic, but at a price | === Audiovisual Magic, but at a price |
| Shimajiro's investment was not entirely charitable. He was the president of Namsegdo's Game division and their company was sitting on a glut of 128kb RAM die chips and unused PPU (Picture Processing Units) and prototype ASU chips for an upcoming console (Audio Sample Unit). A deal was made; they were placed into the SD-8516 as a new pair of co-processor chips: the XY-85 arcade board, loaded with a relatively unknown prototype chip called the SPC-1000. The ram was expanded to 512kb and partially dedicated to the new add-on boards. 128k for the PPU and 128k for the SPC. Additionally, they would adopt a new "CART" format for distributing games on up to 6mb ROM die carts. This made the SD-8516, on paper, the most powerful console of it's time, but not by much. | Shimajiro's investment was not entirely charitable. He was the president of Namsegdo's Game division and their company was sitting on a glut of 128kb RAM die chips and unused PPU (Picture Processing Units) and prototype ASU chips for an upcoming console (Audio Sample Unit). A deal was made; they were placed into the SD-8516 as a new pair of co-processor chips: the XY-85 arcade board, loaded with a relatively unknown prototype chip called the SPC-1000. The ram was expanded to 512kb and partially dedicated to the new add-on boards. 128k for the PPU and 128k for the SPC. Additionally, they would adopt a new "CART" format for distributing games on up to 1mb ROM die carts. This made the SD-8516, on paper, the most powerful console of it's time, but not by much. |
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| In return, Stellar Dynamics had to pay back the cost of each board without raising the price of the system until the investment had been paid. But Shimajiro saw to it that the boards would sell. | In return, Stellar Dynamics had to pay back the cost of each board without raising the price of the system until the investment had been paid. But Shimajiro saw to it that the boards would sell. |
