© nemo 2018-2019
Here are various things that change the RISC OS VDU
This module provides SWIs that allow VDU24 (graphics window) and VDU29 (graphics origin) to surpass the VDU’s 16bit limit, and for VDU28 (text window) and VDU31 (text cursor position) to surpass the 8bit limit.
This is not a full solution as it doesn’t address the 16bit OS_Plot limit directly (though it can be bypassed by altering the origin) and, more seriously, does not allow any mechanism for printer drivers to implement the API.
The full solution is called VDUExtend, and I’m working on it.