Timex ports are fully decoded
Timings appear close to 48K spectrum
Keyboard reads (port FE) are different to other spectrum models,  bits 5 & 7 are always reset
Reading unattached ports gives 255. There are no floating ULA values.
Joystick ports are all over the shop!
Machine is silent during loading (eerie!)
Colours are always bright in hires mode
Border always matches hires colour in hires mode
