C9 club members unite! (I forgot it all. It's been 35 years ago last I did this and high school mostly crowded it out of my memory. But C9 was RET, that I stil

C9 club members unite! (I forgot it all. It's been 35 years ago last I did this and high school mostly crowded it out of my memory. But C9 was RET, that I still remember. ZX Spectrum, for me. But Z80 manual (dis)assembly nonetheless.)