John Durst About Roles Name : John Durst Book Role Machine Code Sprites and Graphics for the ZX Spectrum Author Sprites y Graficos en Lenguaje Maquina Author Change Request You can request changes or additions here. You can upload files. All change requests are actioned as quickly as possible and you will be informed of the result. Details Files Your Name * Email * Details Your browser doesn't have Flash, Silverlight or HTML5 support. Submit Thank you for your change request. We will respond as soon as possible.