|Re: HP-41 MLDLs|
Message #2 Posted by Marcus von Cube, Germany on 28 May 2009, 5:09 a.m.,
in response to message #1 by Garth Wilson
From the top of my head:
MLDL2000 by Meindert Kuipers:
Needs card reader shell or similar housing, stores ROM images in flash or RAM. Very flexible (multiple dip switch selectable configurations, USB connectivity to PC for full control of the RAM and ROM configuration) but adds considerably to the size of the 41. Bank switching (Advantage) and Hepax (on device development) are supported. Battery backup is possible.
Clonix & NoVRAM by Diego Diaz:
Clonix is a flash only ROM emulator which supports bank switching. It fits into a module housing. To flash ROMs you'll need a prommer device (for PICs). Bankswitching is supported.
NoVRAM in its various incarnations adds RAM for Hepax emulation and ROM storage but you still need a prommer. The size is the same. The contents is protected even if you remove the module. So you can use the Hepax file system to transfer programs between machines.
All MLDLs or ROM emulators will eat on your batteries to various degrees. This is somehow firmware dependent. (I'll need to update my devices.) AFAIK none of them can emulate extended memory (but they can hold the EM functions in ROM, of course.)
Edited: 28 May 2009, 5:11 a.m.