Subject: Re: [stella] Making carts From: fedeedw@xxxxxxxxxxxxxxxxxxx (Edward Federmeyer) Date: Thu, 6 Mar 1997 10:38:30 -0600 (CST) |
>>>will be a while before games get that complicated. Perhaps by then, we can >>>get together on a design for a "generic" 8K/16K/whatever board, and make >>>enough for everyone, so that the per-board costs are lower. (ie, if I >> >>Here's a better idea. Cannibalize Asteroids carts like you did for >>the Pac-Man and Combats. There must be other OC 8K games. If worse >>comes to worse, we can buy those bulk cartridges from Oshea for 60c >>each. Unfortunatly, they key to bank switched carts is inside the ROM chip itself. No EPROM would have that kind of bank-switching built in. Using an 8K board might make things easier, but the cost of getting a chip maker to create a custom EPROM (or ROM) with the custom bank switching circuity needed, would be way more than the cost of having a run of new PC boards made. Ideally, we would have a "blank" board capable of taking a 74xx NOT gate and standard 1/2/4K EPROM, or a few standard 74xx chips that impliment bank switching, and a standard 8/16/32/64K EPROM. This allows 1) ease of manufactuing 2) spreads the cost out even thinner. EdF -- To unsubscribe, send the word UNSUBSCRIBE in the body of a message to stella-request@xxxxxxxxxxx
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