Re: Signature Analyzers

Matt,

You need to hardwire the NOP code onto the data lines. The Start/Stop both
go to the highest address line (pin 25 on the 6502) the Clk basically goes
to the clock to the processor. I like to use the test point on the board
for the clock as this ensures that the buffer for the clock is operational.

There should be some NOP card info on spies, try under the HP signature
analysis section.

Peter

-----Original Message-----
From: Matt Rossiter - Verio Southern California <matt@rossiters.com>
To: Mark Shostak <shostak@directlink.net>
Cc: TechToolsList@flippers.com <TechToolsList@flippers.com>
Date: Friday, January 14, 2000 9:53 PM
Subject: Re: Signature Analyzers

>I may have asked this before on Vectorlist, but how exactly do you
>generate the proper signatures on Atari boards without the CAT
>box? Do you hardwire the data lines on the CPU to something specific?
>
>Where do the stop/start/clock wires go?
>
>
>Just curious.
>
>
>Matt
>
>
>
>_____________________________________________________________________
>
>On Fri, 14 Jan 2000, Mark Shostak wrote:
>
>> > Is it true that the it reports the same signature as a cat box?
>>
>> Yes, the HP reports the same signatures as the CAT box.
>>
>> However, the HP is a lot nicer to use. I have both and for SA
>> I use the HP over the CAT. It has better probes, a bigger display,
>> it's like a bench meter in that you can read it while your working,
>> on the CAT, the display is oriented up, towards the ceiling,
>> so you can't just glance over at it to read the sig.
>>
>> -Mark
>>
>>
>
>
Received on Fri Jan 14 16:42:29 2000