The Enterprise OneTwoEight

The Enterprise One Two Eight was built round the Z80 processor at a clock speed of 4MHz with a 32k ROM and 128k of  RAM. The display has three text modes of 40 characters on 24 line, 80 characters on 32 lines and 84 characters on 64 lines

There are eight graphic modes from 16 colour 256 x 160 pixels to 2 colour 672 x 512 pixels,  interface's included Tape, RGB, ROM slot, RS232c Joystick and Expansion port

There was also a 64k version of this machine, recently there was a 64 sold on ebay for more than £170. I paid £5 for the 128 several years ago.