|This is the CPU. The 7501 is a modified version of the 6502.|
The difference between the numbers (7501/8501) is that they were manufactured with different technologies.
7501 is manufactured with HMOS-1
8501 is manufactured with HMOS-2
Made in Thailand, different font for printed text.
A CSG (Commodore Semiconductor Group) branded 8501, manufactured week 14, year 1990.
Copyright © Plus/4 World Team, 2001-2013