Introduce xa65

This is a bridge between 'nasm' and 'cl65'. That is, it runs the same
command on both 'nasm' and 'cl65', compares the resulting binaries, and
gives back the binary from 'cl65'.

Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/README.md b/README.md
index 8b4c08a..c39e9f5 100644
--- a/README.md
+++ b/README.md
@@ -47,6 +47,15 @@ Alternatively, you can also pass a path to a configuration of your own. Check
 out the [ones already bundled](./lib/xixanta/src/mappings) on this application
 for reference.
 
+## `xa65`
+
+Since `nasm` is still under heavy development, it's a good idea to compare the
+results that it produces with a mature and stable assembler like
+[cc65](https://github.com/cc65/cc65). The purpose of `xa65` is to provide a
+bridge, and so it simply executes both `nasm` and `cc65` with the given
+arguments. If the results from both assemblers are not the same, then it will
+display a warning and produce the binary as taken from `cc65`.
+
 ## `readrom`
 
 The `readrom` program reads a given ROM file and shows all the information that