[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: New chip in TWGS (sources for oscillators)
- Subject: Re: New chip in TWGS (sources for oscillators)
- From: supertimer@aol.com (Supertimer)
- Date: 1999/09/14
- Newsgroups: comp.sys.apple2
- Organization: AOL http://www.aol.com
- References: <7ri96j$5nd$1@nnrp1.deja.com>
Ok, I found my old DigiKey catalog. Here are the
part numbers:
CTS Clock Oscillators, Half Size
40Mhz CTX175-ND $3.25
50Mhz CTX176-ND $3.25
64Mhz CTX177-ND $4.45
You can order them at the DigiKey web site at this
URL: http://www.digikey.com/
An oscillator of a particular Mhz will clock the TWGS
CPU at 1/4 of the oscillator Mhz, so the 50Mhz
oscillator will make the CPU go at 12.5Mhz, for
example.
If price is not an issue, I suggest getting one of each
and experimenting to see what speed the TWGS
tops off at.
If not, I suggest getting the 50Mhz and 40Mhz units.
12.5Mhz TWGS (50Mhz oscillator) almost always
works, but with a 40Mhz unit, you can fall back on
10Mhz operation if necessary.
The 64Mhz oscillator (16Mhz operation) is a bit more
iffy, since cache RAM speeds come into play. Grab
this oscillator too if you want to experiment, but it
may or may not work.
Good luck!
[Copies posted to email and csa2]