Changes
/* Hardware */
Due to the need to include both control codes and completely-addressable graphics, in graphics mode each byte contains only six pixels ― a seventh bit is used optionally to invert the available colours. So the 40-byte display is at most 240 pixels. In practice it is usually less because of the need to establish foreground and background colours in the leftmost columns.
An [[AY]] is provided as the sound chip, exactly as on the [[CPC]], and at same frequency.
The Oric is also notable for shipping initially with a buggy ROM that made loading and saving from tape extremely unreliable. This was corrected in later manufacturing runs.