My first thought upon reading that was "WHAT?! The 6502 can run up to 1GHz?! And there's a newer one that runs at 1.5?!" I'm so used to modern specs that it took me a few re-reads to finally parse that M != G.
It took me a minute to figure that 6502A wasn't the same as 6502.
It needs this chip to run at 1.5MHZ. This chip runs at 1MHZ and can't be used.
Truly a WTF moment.
Tricksters, weren't they?
I think you can run MAME on an iPhone. Quite a difference 30 years makes.
I didn't even know there was a 6502A. I thought most console units (not to mention many PCs and peripherals of the time, such as the C64 and the 1541 disk drive) jumped from the 6502 to the 6510.