19 Sep
2025
19 Sep
'25
4:01 p.m.
On 9/19/2025 2:16 PM, Fred Cisin via cctalk wrote:
The 6502 was s'posedly develeped because Motorola
was upset that the
6500? was too closely based on the 6800.
6800 never really caught on until the 6809 (a really great chip), but
the 6502 was immensely popular (although, nowhere near as much as the
8080/Z80)
Which I find ironic, because the 6809 uses big endian notation for code
and vectors, whereas the rest used little endian (and so did the 65XX,
not that anyone here didn't already know that)
That said, I wonder if the '09 interest was due to the highly orthogonal
and relocatable ISA.
Jim
--
Jim Brain
brain(a)jbrain.com
www.jbrain.com