Also check the Text and OCR'ed versions of this document.
[[Media:The Amstrad CPC Firmware Guide.txt|original txt version]] or [[Media:CPC firmware.pdf|decadent pdf version]] or[[http://www.cantrell.org.uk/david/tech/cpc/cpc-firmware/ On-line HTML version]]
<gallery caption="Firmware Guide by Taylor and Defoe 1992">