11-06-2023, 12:55 PM
Also an option is to get a Floppy Disk (DRAM) core board and swap out the ROM (SRAM) board. That'll give you a Premium with at least 56K of RAM. More likely 128K.
There are changes that need to be made to the main board to prep it for being a Floppy (DRAM) board, but it's well documented in the Microbee Hardware Notebook with Updates (In the repository. It's probably the most useful document out there for Microbee repairs)
If you do stick with the PC85 configuration, I've done up a ROM swapper board that sits in the ROM I position that gives you 16 different ROM images that can be switched out for each other. (See here: https://github.com/cheshirenoir/BeeMultiRom)
If you do go down that path, I probably have spare PCBs somewhere.
John
There are changes that need to be made to the main board to prep it for being a Floppy (DRAM) board, but it's well documented in the Microbee Hardware Notebook with Updates (In the repository. It's probably the most useful document out there for Microbee repairs)
If you do stick with the PC85 configuration, I've done up a ROM swapper board that sits in the ROM I position that gives you 16 different ROM images that can be switched out for each other. (See here: https://github.com/cheshirenoir/BeeMultiRom)
If you do go down that path, I probably have spare PCBs somewhere.
John
John "CheshireNoir" Parker
----
One Dark Little Kitten
----
One Dark Little Kitten