TI has a new 'A' version of 1Meg EPROMS. They are marked 27c101A
They allow use of the SNAP agorithm. We got a bunch (5000) in stock, 
so some may make their way to engineering. Our programming equipment 
probably will not recognise the electronic signature I.D. for these 
parts, DATA I/O says January availability.

TI says that if you disable the auto select in the programmer, and 
tell the programmer that it is an Intel 27c010, that it will program 
OK. 

The notice from TI is posted at the programmers.