The Cursor

Edit CACHEMAN.C so off-screen memory is allocated for the hardware cursor. Remember that cursors can be larger than 32 x 32
Edit the eddm_DeviceSetCursor function in the EDDMCURS.C file so it copies the AND and XOR masks into off-screen VRAM. The primary change will be to reformat the incoming AND and XOR masks into a form suitable for use by the hardware cursor.
Edit EDDCURSR.ASM, and add code to support the hardware cursor.