ZX81 ULA2

[z3spacial]

Hi,

I have Andy's 'original' ULA2 on one of my Zeddys. Unfortunatley, I have lost the doc for it and the original weblink to the PDF no longer exists. Other than randomly 'Poking' 101 to achieve black screen, faster CPU etc, Does anyone have access to the full PDF to take out the guesswork?