Re: Failure speeding up ZipGS - advice wanted

["mmmann" <apple@ware4.com>]

Hi Rich et al.. I appreciate the input.

The oscillators I purchased are from JDR and look exactly like the old one. 
They're the large oscillators with 4 pins. The FAQ mentions an OSC50.0 
oscillator from JDR that got the author up to 10Mhz. I purchased an OSC40.0 
and an OSC48.0 (they don't carry OSC50.0 any more) so it seems that I have 
pretty much the same parts as that author.

But the ILSI part number generator (mentioned in the original post) still 
bothers me. When you use it it says that an HCOF-1 is a 1.8v part. Maybe the 
part # generator doesn't work right?

For the sake of completeness, here's the lettering on the old and the new 
oscillators:

ORIGINAL PART:    ILSI    HCOF-1    32.000Mhz    2292

NEW 40Mhz ONE:    RASCO PLUS SE    40.000 MHZ    9016    SP98

NEW 48Mhz ONE:    TOYOCOM    TC0-711THC    48.000Mhz    9137    JAPAN

Mike

p.s. Warr - I can Email you a parts list and exactly where to purchase the 
parts if you like. Minus the oscillators, that is. :-)

<aiiadict@gmail.com> wrote in message 
1137787079.421140.263460@f14g2000cwb.googlegroups.com">news:1137787079.421140.263460@f14g2000cwb.googlegroups.com...
> ZipGS oscillator socket:
>
>       *x     x*                 _______
>   GND  1 o     o 14  POWER     1 |o      \ 14
>   NC     x     x     NC          |        |
>   NC     x     x     NC          |  FULL  |           ______
>   GND  4 o     o 11  POWER       |  SIZE  |        1 |o     \  8
>   NC     x     x     NC          |        |          |  HALF |
>   NC     x     x     NC          |        |          |  SIZE |
>   GND  7 o     o  8  OUTPUT    7  \______/  8      4  \_____/  5
>
>            (A)                      (B)                 (C)
>
>
> does your oscillator match the pinout, or have you adapted it
> correctly?
>
> 5v = TTL
>
> 1.8v parts are more modern than anything on an apple II board...
>
> 5v into a 1.8v part = certain death of component.
>
> Rich
>