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  1. 1. I'm interested in:

    • RAM 320XL naked version
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    • RAM 320XL full version
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    • RAM 320XE
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    • RAM 576+
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Thanks all for the suggestions! I'm going to look into them ;-) My goal is to run all those newly demos for Atari (some require 320KB if i'm not mistaken). I do have a SDrive-MAX project ready to try out when I finish the SIO connector.

So would both options (syscheck or turbo freezer) be valid for running those demos of a SDrive-MAX?

Syscheck is available from Germany...my neighbor ;-) So think that is the easiest way. Syscheck ram upgrade uses (only?) RAMBo scheme? Will this be a problem running all available demos?

 

Edited by davince

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Turbo-Freezer 2011 uses Rambo. It should be fine for most demos.

 

As far as SDrive-Max goes, I've never heard of any incompatibilities with Turbo-Freezer 2011.

 

One thing to note about the Syscheck, is that it comes with no enclosure. The Turbo-Freezer 2011 (as you can see through the link I posted) has a small connector PCB (for PBI or ECI) and the device cased in a standard AtariMax translucent cartridge shell. The Turbo-Freezer's also more compact in size -- or at least doesn't stick out from the back of the computer as far (using ECI)...

 

Edited by MrFish
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18 hours ago, MrFish said:

One thing to note about the Syscheck, is that it comes with no enclosure.

Enclosures are in development.

 

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I apologize in advance for this question..

I have the RamboXL 256k installed in my Atari 800xl.  I remember swapping out the 8 64k drams for 256k drams.

Can this be done to get 320k?  (using 320k drams x8)

 

t

Edited by thomas3120

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22 minutes ago, thomas3120 said:

I apologize in advance for this question..

I have the RamboXL 256k installed in my Atari 800xl.  I remember swapping out the 8 64k drams for 256k drams.

Can this be done to get 320k?  (using 320k drams x8)

 

t

If you had the old 64 k chips you could make a 320k memory upgrade combining them and adding support chips for it.... last I knew there aren't any 320k spec chips...

you might go for 128k chips of 256 k chips and make 384k or 512k respectively... though when crossing to 512k you lose internal basic...

Edited by _The Doctor__
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15 minutes ago, _The Doctor__ said:

If you had the old 64 k chips you could make a 320k memory upgrade combining them and adding support chips for it.... last I knew there aren't any 320k spec chips...

you might go for 128k chips of 256 k chips and make 384k or 512k respectively... though when crossing to 512k you lose internal basic...

yes i have some of the original 64k ones but you lost me after that...

So do all the 256k ram ics stay (x8), do you replace soe of those with 64k?

I noticed before all ram was socketed, all but the 3 closest to the user (upper U's i believe)

 

Also, I wouldn't be changing anything to the RamboXL pcb would I?

t

Edited by thomas3120

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no, it does not work that way... you would have the base 64k plus an add on board. for your 256k chips and the supporting circuitry

it's simple math... 64 plus 256=320k

256 and 256 is 512

in all cases you need support for the extra memory... you can't just plop whatever you want in the original ram sockets...

 

this really should be it's own thread....

 

but to be relevant, it might be easier or cheaper to just get pre made memory upgrades, internal or external and have them installed for you etc.

Edited by _The Doctor__
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To add 64K back in you would piggy back them onto the 256K chips, a messy mod at best. Also the RAMbo board won't support that, so you would need more logic chips for even more mess.

Edited by ClausB
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3 hours ago, ClausB said:

To add 64K back in you would piggy back them onto the 256K chips, a messy mod at best. Also the RAMbo board won't support that, so you would need more logic chips for even more mess.

 

And even if you were willing to go to that much trouble, you'd be better off using 8 more 256K chips and getting 512K total.   For the few $$$ you'd save recycling the 64K chips it wouldn't be worth it IMHO.

 

Atarimax used to sell a 512K upgrade board based on Claus' design, which is also the template for the Rambo.

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