ZaneKaminski
Well-known member
Here’s the link: https://www.applefritter.com/content/five-new-opensource-appleii-cards-coming-soon-we-need-your-help
RAM2E is gonna be released in a week or two, having been tested by several others with no problem. GR8RAM and Time Machine are working in my lab but one tester reports an incompatibility with the CFFA3000 card, which is currently out of production and I can’t obtain, so they are held up.
Mouserial and Library Card are next on the list to finish, but they both have an MCU, which makes them more complex.
As for this project, I completed the new layout with the additional SRAM for 512k compatibility but I didn’t like the cost, especially once I added the proper type of DIP headers. So I will be redoing it to use a microSD card, at the expense of being a bit slower. The CPLD on the board will implement a straightforward SPI interface between the Mac and the microSD card running at 25 MHz, so the peak bandwidth will be 25 Mbit/sec or just over 3 MBytes/sec.
RAM2E is gonna be released in a week or two, having been tested by several others with no problem. GR8RAM and Time Machine are working in my lab but one tester reports an incompatibility with the CFFA3000 card, which is currently out of production and I can’t obtain, so they are held up.
Mouserial and Library Card are next on the list to finish, but they both have an MCU, which makes them more complex.
As for this project, I completed the new layout with the additional SRAM for 512k compatibility but I didn’t like the cost, especially once I added the proper type of DIP headers. So I will be redoing it to use a microSD card, at the expense of being a bit slower. The CPLD on the board will implement a straightforward SPI interface between the Mac and the microSD card running at 25 MHz, so the peak bandwidth will be 25 Mbit/sec or just over 3 MBytes/sec.