[Techtoolslist] 6502 pods & clocks....

[John Robertson]

On 11/05/2013 3:18 PM, John Robertson wrote:

> Tic, tock...

>

> The 6502 will clock from either a crystal or an R/C system. The 

> problem with the R/C is the capacitor is only 10pf, so the cable 

> capacitance will sloooowwwww the clock down somewhat (900kz to 500kz 

> or so).

>

> So, being impatient I'm making a simple 7404 1Mhz R/C clock that fits 

> into the Fluke adapter socket and will drive the UUT 6502 CPU 

> directly, thus the pod won't interfere with the clock frequency and I 

> won't get any more timeout errors (I hope).

>

> John :-#)#


Yes, that did work, I was getting timeout errors with the original R/C 
clock and now my little 7404 R/C clock has tidied up the signal and is 
driving at 900kz which is just fine for testing. I'm now getting 
reliable learn, etc. functions.

John :-#)#

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