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Fix table in stack.md

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Edward Amsden 2022-07-24 04:26:27 -05:00 committed by GitHub
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@ -7,12 +7,13 @@ This document describes the current (2022/01/13) state of the memory layout and
Nouns are represented as machine words with the MSBs as tag bits. Nouns are represented as machine words with the MSBs as tag bits.
By treating a 0 MSB as the tag for a direct atom, we can compute directly with direct atoms without masking the tag. By treating a 0 MSB as the tag for a direct atom, we can compute directly with direct atoms without masking the tag.
|------|-----------------------|
| MSBs | Noun | | MSBs | Noun |
|------|-----------------------|
| 0 | Direct Atom | | 0 | Direct Atom |
| 10 | Cell Pointer | | 10 | Cell Pointer |
| 110 | Indirect Atom Pointer | | 110 | Indirect Atom Pointer |
|------|-----------------------|
A direct atom is an atom which fits in a machine word, less one bit for the tag. It is stored directly. A direct atom is an atom which fits in a machine word, less one bit for the tag. It is stored directly.