[Gmecm] What really is a 'mask'?

[Robert W Hughes]

The warly C3 ECMs had most of the software in an on board ROM (mask 
programmed) with some small parts in the removable PROM along with the 
calibration parameters. There were links in the ROM down to the PROM to 
execute the extra routines.
-- 
Robert W. Hughes (Bob)
BackYard Engineering
29:40.237N, 95:28.726W or perhaps 30:55.265N, 95:20.590W
Houston, Texas "The city with too much Oxygen"
rwhughe at oplink.net