Simple question on cold reset

[Slor]

I simply want to add a momentary button to my 800XL to allow a cold reset without turning off the power switch. I know I saw the connections to make, but darn if I can't locate the info now. Can someone point me to the info or simply tell me what connections to make (assuming it's just that easy)?

 

thanks

[Foebane]

If I remember, to make a cold reset (so that the Atari "farts" through its memory test) it wasn't necessary to turn it off, just press another key with the reset. I forget which, though.

[NightSprinter]

I think it might be the "Option" key that you hold down to get into the test menu and bypass ATARI BASIC. Don't quote me on that, though.

[Jeff Lodoen]

I think it might be the "Option" key that you hold down to get into the test menu and bypass ATARI BASIC.  Don't quote me on that, though.

937202[/snapback]

 

Was it not the HELP key you mean? (or type BYE from BASIC)

Hold OPTION to disable BASIC

Hold START to boot an ML cassette

 

But I believe the only guaranteed way to get a cold RESET requires hardware. The hardware I read about was a cartridge-shell with a button called "Jumpstart". To get a cold reset, you'd hold the button and press RESET.

 

Look near the bottom here.

 

I simulated the effect on my machine by popping in a crummy game cart (Webster, yuck!), then holding RESET and pulling it out.

[SeaGtGruff]

I simply want to add a momentary button to my 800XL to allow a cold reset without turning off the power switch.  I know I saw the connections to make, but darn if I can't locate the info now.  Can someone point me to the info or simply tell me what connections to make (assuming it's just that easy)?

 

thanks

936812[/snapback]

I may be remembering wrong (it may have been for a different computer, like the C64), but I know I saw an article in a home computer magazine many years ago about how to add a "cold reset" button. Since (AFAIK) most of the old Atari mags are now archived online, you might want to search through them to see if you can find an article on how to do this.

 

Michael Rideout

[+poobah]

Way back in the dark ages, before the dawn of time (I think '80 or '81) I hooked up a little Radio Shack momentary contact job to my trusty Atari 800. I'm fairly certain it was on the 6502's reset line, but I don't know for sure. It's definately possible, 'cause I have one.... I'll have to head down to the old computer archive/basement and drag her out for inspection....

[gcude]

I simply want to add a momentary button to my 800XL to allow a cold reset without turning off the power switch.  I know I saw the connections to make, but darn if I can't locate the info now.  Can someone point me to the info or simply tell me what connections to make (assuming it's just that easy)?

 

thanks

936812[/snapback]

 

 

Here's a link to The Freezer mod ...

 

http://atrey.karlin.mff.cuni.cz/~pavel/atari/freezer.html