Sinclair QL Motherboard and Wafer Expansion Card prototypes 1985

[@rodh2168]

Thank you for this most interesting look at the past of the QL. Much appreciated. Best regards.

[@derekstewart5558]

great video.

[@alanwicks5643]

Hi. Do you have any more proto types (as you have with the DRAM board featured elsewhere) or documentation / pictures on the external QL microdrives (other than Rick Dickinson's photos online), the external 128k ROM board (pictured in Sinclair User, March '84) and the hard disk interface (mentioned on your website as being shown at the launch)?