Keyboard, Mouse and Video:

The keyboard is attached via a V11 serial interface and contains its own EPROM, it also houses the beeper.

https://dl.dropboxusercontent.com/u/55419307/Siemens%20PC-D/PC-D%20Keyboard.rar

Praxisbuch, p.9f, Servicehandbuch Teil 1, p.172ff (=> PCD translated p.14ff)

The display is controlled by the SCN2674 chip with 32KB of Display RAM
Servicehandbuch Teil 1, p.160 (PCD translated p.8)

Video memory map: Servicehandbuch Teil 1, p.162f, p.164ff (=> PCD translated p.10ff)

There's an Alpha mode and a Graphics mode: Servicehandbuch Teil 1, p.160

An 8041A on the Graphics card acts as a mouse controller: Servicehandbuch Teil 1, p.161 (=> PCD translated p.9f)

The dumps of the 8741AD's ROM are contained in the main archives of the "Mainboard" post"

https://dl.dropboxusercontent.com/u/55419307/Siemens%20PC-D/scn2674_548307.pdf

Graphics Video: Servicehandbuch Teil 1, p.31, p.157 (PCD translated p.7), p.159,

Pinout of the Monitor (it's a BAS signal!) and Mouse Connector: Servicehandbuch Teil 1, p.83, p.141


NCR DMV- DEC Rainbow- Siemens PCD- ITT 3030-Oly People- Acorn A5000- Olivetti M20