On Sun, 22 Jun 1997, tiborj wrote:
Hello there, I an fairly new here, but I am interested
in all kinds of
hardware and software hacks.
Someone out there mentioned the 'sophistication' of the Apple ]['s video
addressing, saying that the
RAM refresh steals CPU cycles, Apples method is worse than a kludge, it was
simply a crufted idea. yes, the Disk II is an elegent kludge,as ALL of my
homebrewed electronic gear are kludges just to make them work!<G>. My first
computer was a Commodore 64, and comparing it to apples(not oranges :0) the
64 is WAY more advanced, and it too shares a medium populated motherboard. I
can do 90% of the multimedia stuff on the 64 as you can with a P-133! my
point being, the Apple and 64 both had 6502 compatible proccessors, but the
6510 used by the 64 has smarter memory mangament, and it is fast enough to
refresh the ram AND do sprite graphics AND use bit mapped memory. adding
Unfortunately your comparison is invalid since the C64 had a seperate
chip for sound as well as graphics. The Apple used one 6502 to process
everything.
perhiperals to the 64 via the serial bus worked NICE,
and I can prove
history is repeating itself. Look at the new USB (Universal Serial Bus)
If not slow as hell. The worst part about the commodore 1541 drive is
that it had its own processor, and it was still slow. The bottleneck was
the serial interface. Commodore was lame not to use something faster
than, what was it, 19.2K? In contrast, the Apple Disk ][ could transfer
data at about a rate of 16K per second.
standard, where they want to run evrything from
keyboards, mice, modems
etc... the Wintel croud calls it BRAND NEW IDEA, but we did this 10 years or
more ago. I got a good taste of Apple's machines in school, and they were
Yeah, it was called daisy-chaining.
Sam
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