The ElkSD64 has proved to be extremely popular, but people regularly
asked if there was a version that would work with the Plus 1 expansion. Those requests lead directly to the ElkSD Plus 1.
The ElkSD-Plus 1 is a combined SD card interface and RAM expansion in cartridge form, which works in a Plus 1 cartridge slot.
The ElkSD-Plus 1 is cable of using two seperate versions of the MMFS filesystem, switchable either by jumper or in software. By default MMFS 1.4x is used, ensuring maximum compatibility and stability. But MMFS 2 is also available, which some people will prefer as it enables easier use of .SSD images but at the cost of breaking compatibility with game launcher menus.
Another new feature is the failed flash recovery system. If a problem occurs when updating the ElkSD-Plus 1's software setting a jumper will enable the cartridge to boot from a backup copy of MMFS and be able to re-run the update flashing process.
The Plus 1 cartridge slots are limited to two 16K memory banks per cart, as one bank is used by the MMFS ROM this means the 32K of RAM on the ElkSD64 has had to be reduced to 16K on the ElkSD Plus 1, resulting in a total of 48K usable RAM on the Electron.
The ElkSD Plus 1 rev 1.x is no longer available, it has been replaced by the rev 2.x version.
|Installation Instructions||elksdp1_inst.pdf||Installation Instructions (2.x)|
|User Guide||ESDP1_Guide.zip||ElkSD-Plus 1 full user guide.|
|Games Collection (Big)||elkbig.zip||A large third-party collection of Electron games, some need sideways ram to run.|
Please note: these downloads are for revision 2 ElkSD Plus 1 cartridges only. If you don't know which revision you have, check the side of the cartridge. The rev 1 has a 3-pin jumper block on the side, the rev 2 does not.