R.L. Dane 
🍵 
A list of the launch titles that will come on the #Commodore 64 Ultimate "USB Cassette":
Ethan Black@rl_dane I was so excited when I got the email!!
There are demos by Linus Åkesson on it!! (Username `Lft`). He has really great music. I listen to him all the time. https://www.linusakesson.net/
(The "Machine Yearning" album is really nice BTW. The whole album was implemented as a 4096-byte program!)
There are demos by Linus Åkesson on it!! (Username `Lft`). He has really great music. I listen to him all the time. https://www.linusakesson.net/
(The "Machine Yearning" album is really nice BTW. The whole album was implemented as a 4096-byte program!)
That's pretty cool!!
I really want to figure out how these lunatics made #SecondReality run on the #C64
@rl_dane That's pretty amazing. Something about seeing texels separated from pixels on a system this old makes me gasp a little.
The C64 CPU ran at 1MHz, right? 1 million instructions per second? Or just 1 million *clock cycles* per second?
If it's 1 million instrs per second, then that would *sound* like a lot to someone not in CS. But we know that it takes a lot of instrs to get an inanimate object to do something useful.
Anyway, EOF
1.023 million cycles per second, or therabouts. The 6502 can do ops on both the rising and falling clocks, but IIRC the falling pulses are reserved for VIC DRAM access, so it's still just 1.023 million cycles.
On the plus side, the #6502 instructions execute very quickly compared to others ISAs, but on the minus, they don't do much. 😄
But the thing is that a really well-tweaked program can run faster on a RISC-ish CPU like the 6502 than on a very CISCy CPU like the 68000 (at the same clock rate) because the more complex instructions take longer to run than the equivalent on the 6502 if you're lucky and clever.
But that's just anecdotal regurgitation from me.