[Coco] 6309

[Dave Philipsen]

The HD63C09E is a microprocessor made by Hitachi that is pin-compatible 
with the MC68B09E from Motorola (which is what your CoCo originally 
comes with).  It is basically 100% compatible (with some pretty 
unremarkable exceptions) with the 6809 but it also has a 'native mode' 
that can be entered where it has improved performance.  The native mode 
also adds some more registers and instructions.  Generally, the 6309 
runs somewhere around 10% faster than the 6809 and, if you take 
advantage of some of its additional instructions it may even perform 
better than that.

There is a re-write of the OS9 operating system called NitrOS9 that 
supports the native mode of the 6309 and gives you some performance 
improvement although there is a version of NitrOS9 for the plain vanilla 
6809 too.  Given the fact that neither the 6809 nor the 6309 are being 
actively produced anymore, a person may want to obtain a few just in 
case he blows one up or something happens.  You should have enough of 
them to last you through the rest of your lifetime or the expectancy 
that you will be involved as a hobbyist with the CoCo or 6809/6309!

Dave


On 3/26/2017 11:50 PM, Steve C. wrote:
> For those of us not maintaining the previous emails, what is the 6309, why
> do we want one or three of 'em, how much will they be if you reach 100, and
> do they come with sockets? Oh, and before I hit send, are they compatible
> with everything 6809? Oh, yes, and most importantly... dang I hit send.
>
> On Sun, Mar 26, 2017 at 8:31 PM, camillus gmail <camillus.b.58 at gmail.com>
> wrote:
>
>> Hi all,
>>
>> As of this moment 3/26/2017 10:30 PM we have 74 count.
>> 26 to go and knock off a dollar/piece....LOL
>>
>>
>> cb
>>
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>>