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| author | pommicket <pommicket@gmail.com> | 2021-09-01 18:27:51 -0400 |
|---|---|---|
| committer | pommicket <pommicket@gmail.com> | 2021-09-01 18:27:51 -0400 |
| commit | 336a7931494b149298ec0d215bf643c4ca07a712 (patch) | |
| tree | f1f79a7b5470cb5af12c0d914a24ec6aeb8d50f8 /00/README.md | |
| parent | f71545c939d530d42903deadd365205a4e02bd56 (diff) | |
markdown to HTML converter
Diffstat (limited to '00/README.md')
| -rw-r--r-- | 00/README.md | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/00/README.md b/00/README.md index 25dc1ae..a8d4c38 100644 --- a/00/README.md +++ b/00/README.md @@ -1,7 +1,7 @@ # stage 00 This directory contains the file `hexcompile`, a handwritten executable. It -takes input file `in00` containing space/newline/[any character]-separated +takes input file `in00` containing space/newline/(any character)-separated hexadecimal digit pairs (e.g. `3f`) and outputs them as bytes to the file `out00`. On 64-bit Linux, try running `./hexcompile` from this directory (I've already provided an `in00` file, which you can take a look at), and you will get @@ -369,7 +369,7 @@ That's quite a lot to take in for such a simple program, but here we are! We now have something that will let us write individual bytes with an ordinary text editor and get them translated into a binary file. -## Limitations +## limitations There are many ways in which this is a bad program. It will *only* properly handle lowercase hexadecimal digit pairs, separated by exactly one character, @@ -381,7 +381,7 @@ Also, we only read in data *three bytes at a time*, and output one byte at a time. This is a very bad idea because syscalls (e.g. `read`) are slow. `read` might take ~3 microseconds, which doesn't sound like a lot, but it means that if we used code like this to process a 50 megabyte file, say, we'd be waiting for -a long time. +a while. But these problems aren't really a big deal. We'll only be running this on little programs and we'll be sure to check that our input is in the right |