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README: correct creation year and shell escapes, clarify readByte.

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Piotr Fusik 2013-10-02 11:12:29 +02:00
parent efa15c53d1
commit bfa593aba8
1 changed files with 6 additions and 4 deletions
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README.md
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@ -4,7 +4,7 @@
[DEFLATE](http://en.wikipedia.org/wiki/DEFLATE) is a popular compression format,
used in ZIP, gzip, PNG and many other formats.
In 2001 I wrote a DEFLATE decompression routine (called "inflate")
In 2000 I wrote a DEFLATE decompression routine (called "inflate")
in the [6502](http://en.wikipedia.org/wiki/6502) assembly language.
In 2007 I optimized it so it is about 30% shorter and 10% faster than before.
@ -19,7 +19,9 @@ The routine uses three memory areas:
You must select these locations at compile time, for example:
xasm -d inflate="$b700" -d inflate_data="$b900" -d inflate_zp="$f0" inflate.asx
xasm -d inflate=$b700 -d inflate_data=$b900 -d inflate_zp=$f0 inflate.asx
(escape the dollars if in Unix shell or Makefile).
Source code uses [xasm](https://github.com/pfusik/xasm) syntax.
This cross-assembler includes many original syntax extensions.
@ -41,7 +43,7 @@ uncompressed can be stored in place of some compressed data which has been
already read.
It is also possible to get the compressed data from any forward-only stream.
In this case, modify the `getBit` routine to look like this:
In this case, modify the `getBit` routine to use your `readByte`:
getBit
lsr getBit_buffer
@ -99,7 +101,7 @@ License
This code is licensed under the standard zlib license.
Copyright (C) 2001-2013 Piotr Fusik
Copyright (C) 2000-2013 Piotr Fusik
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages