MROM64C programming instructions

Programming instructions

First, prepare an image to program to the "010" chip.
The easiest way is as follows:

1. create a desktop folder named "characters" and copy 16 character ROMs into it.
2. create a desktop folder named "kernals" and copy 1 BASIC ROM and 7 kernal ROMs into it.
3. create a desktop folder named "combined" and leave it empty.
   You should now have a folder structure like this:

   .
   |--characters
   |   |-- character0.bin
   |   |-- character1.bin
   |   |-- character2.bin
   |   |-- character3.bin
   |   |-- character4.bin
   |   |-- character5.bin
   |   |-- character6.bin
   |   |-- character7.bin
   |   |-- character8.bin
   |   |-- character9.bin
   |   |-- character10.bin
   |   |-- character11.bin
   |   |-- character12.bin
   |   |-- character13.bin
   |   |-- character14.bin
   |   `-- character15.bin
   |--kernals
   |   |-- basic.bin
   |   |-- kernal0.bin
   |   |-- kernal1.bin
   |   |-- kernal2.bin
   |   |-- kernal3.bin
   |   |-- kernal4.bin
   |   |-- kernal5.bin
   |   `-- kernal6.bin
   `--combined
   
   

4. Navigate to "characters".
   If using windows, open command prompt in this folder, and execute:

   copy /b * combined_fonts.bin

   If using linux, open a terminal in this folder, and execute:

   cat * > combined_chars.bin

   Copy combined_chars.bin into the "combined" folder.


5. Navigate to "kernals". If using windows, open command prompt here, and execute:

   copy /b basic + kernal0 + kernal1 + kernal2 + kernal3 + kernal4 + kernal5 + kernal6 combined_kernals.bin

   
   If using linux, open a terminal here, and execute:

   cat basic + kernal0 + kernal1 + kernal2 + kernal3 + kernal4 + kernal5 + kernal6 > combined_kernals.bin

   Make sure to substitute correct file names.
   Copy combined_kernals.bin into the "combined" folder.


6. Navigate to "combined", which should now look like:

   combined
   |-- combined_char.bin
   `-- combined_kernals.bin
   

   Combine these two files using

   copy /b combined_char.bin + combined_kernals.bin mrom64c.bin

   or

   cat combined_char.bin combined_kernals.bin > mrom64c.bin

   as appropriate, making sure that the character sets are first.

Page created: 27FEB2026
Last modified: 27FEB2026