The 1200XL-1mb SRAM upgrade was just released last week, which was very much a personal project as well as the RAMBO XL-II which is also seeing an official release at this time.
The RAMBO XL-II initially had only been discussed and talked about on AtariAge, and also saw an initial release on that platform back in 2022. At the time I needed a way to increase my 1200XL's RAM up to 256K so as to run some applications with a higher memory requirement. The original ICD RAMBO board looked like a good way to do that, but was no longer available, thus the reason I cloned their 1980's era product.
A few years later I encountered some noise issues in the analog video output on that same 1200XL, which after some investigation appeared to be originating from the DRAM and it's support circuitry. Thinking that swapping the DRAM out for SRAM might be a good way to eliminate the noise issue, the 1200XL-1mb board was born. And after installing one, I'm glad to say the noise is no longer present.
So manufacturing files for both upgrades is now downloadable at the RAM tab in my website's navigation bar.
Enjoy,
Michael
The RAMBO XL-II initially had only been discussed and talked about on AtariAge, and also saw an initial release on that platform back in 2022. At the time I needed a way to increase my 1200XL's RAM up to 256K so as to run some applications with a higher memory requirement. The original ICD RAMBO board looked like a good way to do that, but was no longer available, thus the reason I cloned their 1980's era product.
A few years later I encountered some noise issues in the analog video output on that same 1200XL, which after some investigation appeared to be originating from the DRAM and it's support circuitry. Thinking that swapping the DRAM out for SRAM might be a good way to eliminate the noise issue, the 1200XL-1mb board was born. And after installing one, I'm glad to say the noise is no longer present.
So manufacturing files for both upgrades is now downloadable at the RAM tab in my website's navigation bar.
Enjoy,
Michael
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