[coco] A couple of PC hardware questions
mmarlett at isd.net
mmarlett at isd.net
Fri Jan 16 10:53:01 EST 2004
The WOW was for a VERY rare on topic post to the CoCo malted list...... That
>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:
>> 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.
>>> 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
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