The Amstrad CPC Firmware Manual
The Details ...
Low Kernel Jumpblock
High Kernel Jumpblock
The Key Manager
The Text VDU
The Graphics VDU
The Screen Pack
The Cassette/AMSDOS Manager
The Sound Manager
The Kernel
The Machine Pack
664 and 6128 only
The Firmware Indirections
The Maths Firmware
Maths Subroutines for the 664 and 6128 only
AMSDOS and BIOS Firmware
David Cantrell
, March 1996