NASCOM 1 expansion board

Design by: 9663

This breaks into 5 usable pieces via the "mouse bites" (which are not rendered correctly in the images above but which are correct on the actual board) 1/ 64K memory expansion (60K usable) 2/ nascom_sdcard storage board which pigg-backs directly into the SKA/SKB sockets on the NASCOM 1 board 3/ three DIL-to-IDC 16-pin adaptors, allowing you to use IDC-terminated ribbon cables for the keyboard and cassette interfaces Documentation and support software on github at nealcrook/nascom