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Project:Ball Computer: Difference between revisions
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Negative numbers.
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m (Negative numbers.) |
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This isn't especially compact, but would seem to make it easy to separate different operations (e.g. to pass instructions to the memory unit). | This isn't especially compact, but would seem to make it easy to separate different operations (e.g. to pass instructions to the memory unit). | ||
What about negative numbers? Do we use another nibble (one of the instruction ones) to indicate that? e.g. 1111 is negative. Thus: | |||
* 1111 0010 = -2 | |||
* 1111 1001 = -9 | |||
* 1111 1001 0111 = -97 | |||
Need to learn more about logic gates required to handle BCD. | |||
== Memory == | == Memory == | ||
