NC100 Tips and Tricks

Screenshots

Press Control-Shift-S to dump the NC100’s display to storage.

The file will be 4096 bytes in size: each row of 480 pixels is stored in a sequence of 60 bytes, with one bit per pixel. Each row is padded with four empty bytes, so that’s 64 bytes per row over 64 lines: 4096 bytes.

Screenshot files are stored as s.{extension} where {extension} starts at a and continues through the Ascii printable character set and then cycles back to a.

Transfer screenshot files to your computer in the usual way.

Hidden files

At the file selector (Function-L), type Control-Shift-H to show/hide system-hidden files, if any are present.

Protext command mode

Within a document, hit Control-Shift-Stop to enter command mode. Hit Stop to exit.

Command	Argument(s)	Notes
DU	{address}	Dump the memory from {address} in hex. Press Stop to pause the display. Press Space to continue, or Stop again to exit.
MM	{page}	Switch the specified 16KB RAM or ROM page into the Z80 addressable space at address 0x4000.
Key	{macro key} "{macro definitiion}"	Define a macro.

Power On Self Test (POST)

Hold down Shift-Symbol on power up to be offered the option to run the NC100’s POST routine.

Lithium cell issues

If you are experiencing warnings concerning the low power level of your NC100’s lithium back-up coin cell, especially if the battery is nowhere near the end of its five-year lifespan, carefully insert a small wedge of plastic or paper between the casing and the cell’s spring-mounted positive terminal. This will maintain battery connection during minor movements and knocks, and should eliminate the warning.

A non-conducting wedge will hold the coin cell terminal in place