Quantity   Component name
1 × Right angle zx spectrum expansion port socket
1 × 14 pin dip socket I used a 16 pin as that's what I had on hand
1 × 28 pin dip socket
1 × 28 pin ZIF socket
1 × DPDT switch
1 × 70 x90 mm prototype pcb
1 × Atmel 28c256 EEPROM
1 × SN74ls32 OR Gate IC dip 14
2 × 100nf capacitors