(This page is likely to be consolidated into a denser format.)
Acorn's computers used a variety of Ferranti ULAs, none of which have yet been reverse engineered although high-level models do exist in the form of machine-level emulators.
- Acorn BBC Micro Video ULA
- Acorn BBC Micro Tube ULA
- A 9-tile array. Mark Haysman has donated a part marked Ferranti ULA9C018E-7 8504, which has kindly been depackaged by 3gforensics. We do not yet have photographs of the die.
- photo of three generations of packaged parts (Mark Haysman of retroclinic.com)
- Acorn Electron ULA
- A 12-tile array in a lidded ceramic package (probably labelled 12C021M). Theo Markettos and Sergei Skorobogatov have photographed the die and C.S. has stitched the images and produced a corrected monochrome image of the metallisation layer. No images released yet, no netlist extracted yet.
- macrophotograph of the chip in delidded package (Mark Haysman of retroclinic.com)