diff options
Diffstat (limited to '00')
| -rw-r--r-- | 00/Makefile | 4 | ||||
| -rw-r--r-- | 00/README.md | 6 |
2 files changed, 5 insertions, 5 deletions
diff --git a/00/Makefile b/00/Makefile index fa229a2..a328fee 100644 --- a/00/Makefile +++ b/00/Makefile @@ -1,5 +1,5 @@ all: README.html out00 -%.html: %.md - markdown $< > $@ out00: in00 ./hexcompile +%.html: %.md ../markdown + ../markdown $< 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 |