This directory contains microphotographs of various
integrated circuits  found in Commodores 8-Bit line
of homecomputers. The main incentive is to reverse
engineer the circuit of the analog 6581 and 8580 SID
filters to improve the emulation of these ICs.

If you have anything to add, please let me know!

Thanks to Nicolas Welte for donating several dead SID chips.

referringto@gmail.com