@grishka @tubetime Well no, DRAM is based on pages. You first select one of the 512 pages, then you can access any of the bits in that page. The pins for that are mulitplexed, so you need 9 bits for addressing. Obviously it's organized as 256k*1Bit. I have no idea where you get the idea from that it's 32k*8Bit. That would only be useful for computers with word sizes that are a multiple of 8 Bits, or some other number plus parity.