Re: The best way to upgrade your IIGS

[Blah blah <Blah@blah.com>]

> Video and sound emulation eat fixed amounts of PowerPC CPU resources,
> the emulated IIgs CPU takes what's left. Say, if you have a 75 MHz PPC

> then maybe 50 Million cycles per second are used to emulate video and
> sound engines which gives the IIgs CPU just around 25 MHz PPC power.
On
> your 225 MHz PowerMac however there are 175 MHz left which the
emulated
> IIgs can use for raw CPU emulation. 175:25 = 7, 7 times the Bernie
> performance although your Mac is just 3 times faster (225:75).

    I must admit that when I managed to get my hands on a logic board to
replace my original 7200/75 -> 7600/132, I can see the difference in
speed on Bernie.

    Not forgetting that the processing power in terms of performance
starts (MHz vs MHz) lowest on PPC 603, PPC 601, PPC 604, PPC 750.

    I am not sure of the actual gain or MIPS difference in MHz vs MHz,
but Andre's estimation is quite right.

    Right now, I am fighting the battle to know *WHY* DiversiTune hangs
for no reason while playing my favourite song, Waltzing Matilda. No, I
have not check for other songs, but I got far too many system control
panels and extensions to keep track of.
Once I got it going without any problems, I will mail the Woof brothers.
Since DiversiTune is great, means I should be able to play Jam Session
GS & Music Contruction Set GS without any problems too !

    Actually, I was playing DiversiTune from my original disk (s/n :
#61130), ProDOS 8 v1.4.