[coco] A couple of PC hardware questions

[Ray Watts]

I'm not sure what the WOW! is for, Mark.  You did see the Grizzly CoCo 
at Pittsburgh.  However, I forgot to mention two other additions crowded 
into the CoCo chassis;  your AT keyboard interface and a 128k printer 
buffer.  The buffer was added when I bought one the size of a coughdrop 
box and stripped the PCB out of it.  I discovered it didn't require the 
9V external PS because the 9v went directly to a 5V regulator.  Just 
removed the regulator, hooked the PCB to the 65W supply and mounted it 
along with everything else where the keyboard was removed.

Mark Marlette wrote:

> At 07:08 PM 1/15/2004 -0800, you wrote:
>
> Ray,
>
> WOW! On on topic post....I believe that is correct on the internal 
> ZIP. Never had one...Internals I go to EZ135, faster than a ZIP100. 
> Hard to beat a ZIP external.
>
> Mark
> Cloud-9
>
>> 1.  What is the difference between an AT and an ATX power supply?  I 
>> note that the specs for an ATX show a +5V VSB lead.  How is that used?
>>
>> 2. Does a PS/2 keyboard operate identically to an AT keyboard (except 
>> for the connector size)?
>>
>> The reason I ask is that the latest JAMECO catalog has a 150W ATX PS 
>> (though a litttle pricey) that will slide easily into the space left 
>> by pulling the transformer and voltage regulator heat sink.  This 
>> will allow one to install a superboard, a SCSI controller, a floppy 
>> controller (both on a Y-cable), a couple of 3.5" floppy drives, a 
>> SCSI HD and an internal SCSI ZIPdrive all into a CoCo chassis.  Then, 
>> all you have to do is build a polystyrene backplane and cover.  
>> Essentially, this is what I did on the Grizzly CoCo except I only had 
>> a 65W PS so I had to go with an external ZIP.  And, of course, Disto 
>> 2-meg and 3 in 1 boards in place of the superboard.  I was able to 
>> obtain several internal ZIP's to use for this purpose.  One advantage 
>> to internal ZIP's is (correct me if I'm wrong, Mark) you are not 
>> restricted to using /h5 and /h6.
>>
>> JAMECO also has PS/2 keyboards (also a little pricey)  in place of 
>> those windows monstrosities flooding the market.
>>
>> Thanks,    Griz
>>
>>
>>
>> --
>> Coco mailing list
>> Coco at maltedmedia.com
>> http://five.pairlist.net/mailman/listinfo/coco
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