>> Thanks for the info - I did a bit of looking and found
>> several references once I mentioned "Atari 400" - turns out
>> the supplies are AC, which probably explains why your DMM is
>> having trouble determining the polarity.
>
>Interesting - the one I've got here has DC markings on it! Now I'm confused.
Really! - is it the original supply? I'd really like to know FOR SURE before I try
and power this thing up - I think tonight I will take it apart and look to see if
there is an internal rectifier/filter/regulator etc.
Btw, Here are some links so the AC references:
http://www.vidgame.net/misc_utility/cross_ref.htm
http://www.faqs.org/faqs/atari-8-bit/faq/section-35.html
http://www.myoldcomputers.com/museum/comp/atari400.htm
>The only Atari machine that didn't have DOS built in out of the box was the
>400. All the rest from the 800 upwards supported disks because they had the
>extra memory and ROM commands. It's a while since I've played with any of my
>1050s though, but I know where the disks are if nobody with easier access
>comes up first.
Can you (or anyone else) tell me how to access the DOS in ROM? Basically, I
would like to format a disk and write/read something to verify that the drive
is working - as noted previously, I have no diskettes at all for this drive.
Regards,
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Vintage computing equipment collector.
Received on Mon Apr 19 2004 - 04:23:55 BST