First commit

LICENSE

@@ -0,0 +1,23 @@
+Ray tracer in a boot sector.
+Copyright (c) 2024 Oscar Toledo G. https://nanochess.org/
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Makefile

@@ -0,0 +1,24 @@
+# Makefile contributed by jtsiomb
+
+src = ray.asm
+
+.PHONY: all
+all: ray.img ray.com
+
+ray.img: $(src)
+ nasm -f bin -o $@ $(src)
+
+ray.com: $(src)
+ nasm -f bin -o $@ -Dcom_file=1 $(src)
+
+.PHONY: clean
+clean:
+ $(RM) ray.img ray.com
+
+.PHONY: rundosbox
+rundosbox: ray.com
+ dosbox $<
+
+.PHONY: runqemu
+runqemu: ray.img
+ qemu-system-i386 -fda ray.img

README.md

@@ -0,0 +1,34 @@
+# Ray Tracer in a boot sector
+
+*by Oscar Toledo G. Apr/12/2024*
+
+https://nanochess.org
+
+https://github.com/nanochess
+
+### What is this?
+
+This is a port of the amazing Ray Tracer in Atari 8-bit BASIC by D. Scott Williamson. You can see it at [https://bunsen.itch.io/raytrace-movie-atari-8bit-by-d-scott-williamson](https://bunsen.itch.io/raytrace-movie-atari-8bit-by-d-scott-williamson)
+
+I asked him for permission to make a port to a boot sector, and here it is.
+
+If you are going to run it in real hardware it requires a minimum of a Pentium Pro, otherwise most modern emulators will be able to run it.
+
+### How to use it.
+
+If you want to assemble it, you must download the Netwide Assembler (NASM) from www.nasm.us
+
+Use this command line:
+
+ nasm -f bin ray.asm -Dcom_file=1 -o ray.com
+ nasm -f bin ray.asm -Dcom_file=0 -o ray.img
+
+Tested with VirtualBox for macOS running Windows XP running this interpreter, it also works with DOSBox and probably with QEMU:
+
+ qemu-system-x86_64 -fda ray.img
+
+![Ray tracer in a boot sector](RayTracer.png)
+
+## More on this?
+
+Do you want to learn 8086/8088 assembler? Get my books Programming Boot Sector Games containing an 8086/8088 crash course! Also available More Boot Sector Games. Now available from Lulu and Amazon!

e.bat

@@ -0,0 +1,3 @@
+nasm -f bin ray.asm -o ray.img
+nasm -f bin ray.asm -Dcom_file=1 -o ray.com
+