Re: A89: An un-informed theory.
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Re: A89: An un-informed theory.
-----Original Message-----
From: David Phillips <electrum@tfs.net>
To: assembly-89@lists.ticalc.org <assembly-89@lists.ticalc.org>
Date: Tuesday, September 22, 1998 6:49 PM
Subject: Re: A89: An un-informed theory.
<snip>
>ports. This is possible on a moderately fast processor, but not on the
>sluggish 10Mhz 68k (my 89 is really, really slow compared to my speedy
>86...too bad my 86 won't do symbolic calculus).
wow! You think the 89 is slow compared to the 86? Geez, i have an 86 as
well, and I can't believe how much faster the 89 seems. If you still think
the 89 is slower, try graphing big plots and functions and you'll see the 89
rules in speed. I think that the 89 is actually 10mhz, whereas the 86 is
something less (6?). I'm not sure...
>Emulation would be possible, but nowhere at full speed. I'm no expert at
>68k, but to my knowledge, the Z80 is much faster than a 68k (or an Intel
>x86 for that matter) at the same clock speed. I would guess that an
>extremely efficient emulator would no faster than 1/5 (a guess!) of the
>original calculator.
this also doesn't make much sense.... I'm pretty sure that the clock speeds
of the 68000 and the Z80 are relatively the same. I know that the 68000 has
a far superior instruction set as well as memory registers, but I doubt that
the 8080's and Z80's are faster at the same clock speed...
I remember the old Macintosh computers used to use the same motorola chips
as the 89 and the 92 do now (although they used the 68020,030, and 040
instead).
oh yes, one more thing: why would you even want to emulate another
calculator? Aren't all the games that are ported from say the 85 to the 92
better anyway? Why would you want to slow down your calc, AND play
less-advanced games?