> Panos Kenterlis wrote:
> <snipped>
> BTW can you tell me what is the capacity of an EPROM chip i just found
> ?? It has the following label on it 27C64A-20 FA (FES5486   8829VD). I
> pressume the access time is 20ns.. am i wrong ??
> <snipped>

  64kbit, i.e. 8 bit x 8k Byte, EPRom.  20nS is incorrect, too, usually
those -20 parts are 200 nS.  (About the fastest EPRoms get is, oh, 45 or
50 nS, that I know of.)  See (for example)
http://www.amd.com/products/nvd/techdocs/11419.pdf for data on AMD's
Am27C64.

  Mark