On Wed, 17 May 2006, Christian Corti wrote: I have some more information in the hope that it might help identify this chip. First, there are some pictures of the interior of the 1315-P-2 (also on the FTP site, see above), what you can see is an area with a masked programmed ROM, drivers and some random logic. Next, the 2650 is *NOT* from Signetics, it's from Synertek, it's labelled 2650-P-01, and it's definitely *NOT* a 2650 CPU (completely different pinout). There's a picture of it sitting on the board along with the 1315-P-2 in the directory /pub/cm/itt/. And last (for now), the terminal this came from is an ITT 3285 or ITT 3287, identical to a Courier Terminal Systems C270 terminal, based on the i8008 and later i8080, that were used as terminals on IBM 360/370 systems. I have scanned the handbook for installation planning which contains a product listing, also in /pub/cm/itt/. Does anyone have a copy of the service manual for this terminal? It should reveal what these chips are. Is there a datasheet or description of the Synertek chip? Christian