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* .Kartik K. Agaram2021-06-121-2/+2
| | | | | | Rename cells containing screens to screen vars because of the ambiguity that each grapheme in fake screens is represented by a type screen-cell. While we're at it, we also analogously rename keyboard vars.
* .Kartik K. Agaram2021-05-041-0/+1
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* .Kartik K. Agaram2021-04-281-0/+14
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* start cleaning up pixel graphicsKartik K. Agaram2021-04-191-2/+2
| | | | | | Filling pixels isn't a rare corner case. I'm going to switch to a dense rather than sparse representation for pixels, but callers will have to explicitly request the additional memory.
* shell: ctrl-r runs on real screen without a traceKartik K. Agaram2021-04-171-6/+3
| | | | | We run out of memory fairly early in the course of drawing a chessboard on the whole screen.
* .Kartik K. Agaram2021-04-171-2/+2
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* shell: streams that you can append graphemes toKartik K. Agaram2021-04-101-2/+12
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* shell: fake keyboardKartik K. Agaram2021-04-101-0/+13
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* shell: UI now showing fake keyboardKartik K. Agaram2021-04-101-4/+13
| | | | But we don't actually support fake keyboards anywhere yet.
* shell: start on support for fake keyboardKartik K. Agaram2021-04-101-0/+12
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* shell: move fake screen to sandboxKartik K. Agaram2021-04-101-0/+13
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* shell: fake screensKartik K. Agaram2021-04-101-0/+2
| | | | | | | I just realized Mu has a pretty big weakness: writes to null pointers don't error out. Perhaps writes to address 0 do, but address 1 and so on don't? I need a slightly more sophisticated page table.
* shell: start of 'print' primitiveKartik K. Agaram2021-04-101-0/+19
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* shell: structural equality checkKartik K. Agaram2021-04-091-0/+4
| | | | Mu can now compute (factorial 5)
* 7862 - shell: more informative traces for evalKartik K. Agaram2021-03-071-1/+1
| | | | | Also a bugfix in dealing with streams in cells that is becoming part of a pattern.
* 7856 - shell: primitive functionsKartik K. Agaram2021-03-051-2/+25
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* 7842 - new directory organizationKartik K. Agaram2021-03-031-0/+89
Baremetal is now the default build target and therefore has its sources at the top-level. Baremetal programs build using the phase-2 Mu toolchain that requires a Linux kernel. This phase-2 codebase which used to be at the top-level is now under the linux/ directory. Finally, the phase-2 toolchain, while self-hosting, has a way to bootstrap from a C implementation, which is now stored in linux/bootstrap. The bootstrap C implementation uses some literate programming tools that are now in linux/bootstrap/tools. So the whole thing has gotten inverted. Each directory should build one artifact and include the main sources (along with standard library). Tools used for building it are relegated to sub-directories, even though those tools are often useful in their own right, and have had lots of interesting programs written using them. A couple of things have gotten dropped in this process: - I had old ways to run on just a Linux kernel, or with a Soso kernel. No more. - I had some old tooling for running a single test at the cursor. I haven't used that lately. Maybe I'll bring it back one day. The reorg isn't done yet. Still to do: - redo documentation everywhere. All the README files, all other markdown, particularly vocabulary.md. - clean up how-to-run comments at the start of programs everywhere - rethink what to do with the html/ directory. Do we even want to keep supporting it? In spite of these shortcomings, all the scripts at the top-level, linux/ and linux/bootstrap are working. The names of the scripts also feel reasonable. This is a good milestone to take stock at.