jantypas@hope.UUCP (John Antypas) (06/14/88)
I've got 99% of a hercules graphics driver done and now I'm trying to force Sys V/AT to allow me to write to console memory without causing a system panic. The preferred way to do this is: char *c c = gstokv(VIDEOSEL); which would return a kernel virtual address pointing to video memory. (See gst.s) and this is the console driver does it, but it doesn't work. As soon as I try anything at all, such as: *c = 0xff which should put 8 dots on the upper left of the screen, the system dies. Any guesses? John Antypas -- Soft21 --21st Century Software: UUCP: {buita|garp|killer|pyramid|reed|sdeggo|ucsd!ucrmath|uport}!soft21!jantypas Internet: jantypas%soft21.uucp@{garp.MIT.EDU, ucsd.EDU} BITNET: jantypas@ucrvms