Nintendo Entertainment System
"One of the people I decided to write a mail, and tell about my Color Dreams story, was Dan Lawton, one of the founders of Color Dreams and surely someone who had to know something about Hellraiser, I believe it's time to kill all those rumors or verify them as true. Dan Lawton had seen the Hellraiser movie and liked it, so he convinced his partners that Color Dreams had to make a game based on the movie, and they bought the rights, spending from $35.000 to $50.000 for a few years paying the movie studio.
Dan Lawton knew that the NES didn't have the power he wanted for his Hellraiser, so he hired an engineer, Ron Risley, to create a new type of cartridge, the cartridge we all know as the Super Cartridge. The idea for the cartridge was Lawton's, but Risley designed the thing and wrote the supporting operating enviroment. Ron Risley was a pre-med at the time and as he says I'm not a gamer, and lost interest once I had the technical details worked out. The SuperCartridge was a Z-80 based system that intercepted the NES processor's ROM and RAM accesses to manipulate video in real time. It allowed pixel-by-pixel manipulation of the screen (NES was character-based) and also supported panning and zooming in "hardware" (actually background software on the zed) as well as some sprite manipulation.
He was also able to confirm what others claim wasn't supposed to be, that Hellraiser was indeed supposed to be published on the Super Cartridge. He continues As I said, I lost interest in the project after the SuperCart was actually running. I'm a total geekazoid and don't know squat about gaming, so figured I'd probably write dain-bramaged games. I assumed that Color Dreams never did anything with the SC, since they never called with any questions or problems with the design (though Dan could probably have handled all that without my help, it was a pretty complex piece of hardware and the inevitable production snags should have prompted a call).
In addition to Ron Risley's statement about Hellraiser indeed was being developed for the Super Cartridge, Dan Lawton had following to say I liked the movie, and convinced my parteners that it would be great for a game. But the nintendo didn't have enough power to do it justice, so we came up with the idea of doubling the processor power in the nintendo by adding another processor to the video space. The nintendo fetches it's background and sprite images from a seperate memory from the main program memory. Our idea was to share that memory with a second microprocessor which could execute and change those video "tiles", without adding to the overhead on the main nintendo processor.
The nintendo had some kind of 6502 as I recall, but it's been a while. We put a Z80 with DRAM into the video memory, and "dual ported" it so that the nintendo main processor would be able to access it at the same time. Finally, we added some extra zip by putting the video color palette registers in the same place, so that the Z80 could also change those on the fly. The idea was that we could alternate colors between scans of the TV and increase the effective number of colors on the screen.
But Color Dreams also found out that making a good product didn't really matter, you had to get your products into the hands on consumers, which means it had to be on the shelves in the stores, a big problem for all unlicensed companies. Nintendo made it very difficult for anyone without a license to sell their games, there was a video game shortage at the time and store owners were afraid that if they sold unlicensed games along with the, original, licensed products, Nintendo would not ship all of their orders, and video games were where the big bucks were.
So if no one would be able to buy the game, because stores refused to carry Color Dreams games, there was really no point in finishing the Hellraiser game, and who knows if they had finished it, it could've driven them out of business because of low sales. We couldn't afford to spend about $2 million making a very good game. Even a very bad game costs about $200,000 to produce.
The cartridge worked fine, although I was a bit disappointed by the palette register switching effect. You can't alternate colors fast enough, the human eye can catch it. But the extra processor power was incredible. The entire background could be moving with no extra strain on the little nes microprocessor. It would have been perfect for a maze oriented game like HellRaiser was planned to be.
By this time the guys behind Color Dreams had discovered what could earn them a good ammount of money, let them stay in business, and even have enough stores to sell their games, the christian market. As Dan Lawton puts it The christian market was attractive because they didn't have any nintendo games at all, and didn't give a fig about japanese distribution. In fact, if you told them that nintendo might be angry about them selling our games, that made them want to sell them even more. Christian book stores number about 9000 at any given time, and they all wanted to have our games. That's even more stores than Toys R us.
About the possibility of a Hellraiser prototype existing, or atleast the game files, Dan Lawton said The hardware was done, and the artwork was 20% done, there was no programming. It was a 45 degree down angle view, with a maze of stone and walls and pits. So there you have it."
by Martin Nielsen of NES World in "The Story of Color Dreams Part 2"