[Techtoolslist] 9010 and Konami 1 cpu?

[Ian Eure]

Based on what I see in the MAME source[1] for the Konami-1, I 
think a pin adapter will work for everything except RUN UUT.

The opcodes for the CPU are encrypted, so instruction fetches have 
to pass through a decryption stage before being handed to a plain 
6809E for execution.  But, since all the troubleshooting 
functionality is internal to the pod, it ought to be able to do 
the usual stuff okay.  Run UUT definitly wouldn’t work, because 
it’ll get invalid (encrypted) opcodes.

It wouldn’t surprise me if the eBay adapter had a side-effect of 
changing the ROM signatures.  It looks like you can tell 
instruction fetches apart from other memory reads by examining 
LIC, but it’s a gamble whether the adapter’s designer used that or 
some other method to trigger decryption.


[1]: 
https://github.com/mamedev/mame/blob/master/src/mame/machine/konami1.cpp

davids at oz.net writes:

> Maybe, don't want to drop $70 on a part I might not need of 
> course.  But probably worth it to try.  I started working on a 
> simple signal adapter PCB to convert the pinout.  Should let the 
> fluke do the exercise functions but won't run the game of 
> course.
>
> David
>
> -----Original Message-----
> From: Techtoolslist <techtoolslist-bounces at flippers.com> On 
> Behalf Of Justin
> Sent: Saturday, January 4, 2020 10:11 PM
> To: Technical Tools Mail List <techtoolslist at flippers.com>
> Subject: Re: [Techtoolslist] 9010 and Konami 1 cpu?
>
> I was looking at that myself with a Juno First boardset that I’m 
> working on.  
>
> Maybe this adapter would do the job?
>
> https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F223533089610
>
> Justin
> Sent from my mobile
>
>> On Jan 4, 2020, at 8:15 PM, davids at oz.net wrote:
>> 
>> Working on a Konami jailbreak board.  The Cpu is a Konami-1 
>> which is 
>> a 6809E with some built in encryption stuff (and two more 
>> pins).
>> 
>> 
>> 
>> Anyone ever used a fluke on one of these?  Any idea how to wire 
>> up an 
>> adapter or if there is one out there?
>> 
>> 
>> 
>> Thanks,
>> 
>> David
>> 
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