On Fri, 20 Jan 1995 19:09:16 +0000 (GMT), Steve Taylor said: > DPL-compiled aps use the FPC nearly all the time, meaning that the ROM is > nearly always paged in, and the mode 1 interrupts never reach Driver. So > no other programs get processor time, the pointer never seems to move and > so on.
Well, I may have completely misunderstood the problem here, but how about examining the frame counter after each RST28 call to see whether one or more interrupts occurred and then forcing a task switch immediately if one did? I presume that if you wanted the pointer to keep moving then you would have no problems in attaching a "move the pointer but don't switch tasks" subroutine to the frame interrupt vector... imc
