sm501: Implement negated destination raster operation mode
commitdebc7e7dad1e70c03d585d96625da0038eba375c
authorSebastian Bauer <mail@sebastianbauer.info>
Wed, 4 Jul 2018 09:40:58 +0000 (4 11:40 +0200)
committerDavid Gibson <david@gibson.dropbear.id.au>
Sat, 7 Jul 2018 02:12:27 +0000 (7 12:12 +1000)
treef473397743f0f931e7fdf198949c41ddf4df7492
parent54b2a4339ccae45d4264c2437978abd04ff82bca
sm501: Implement negated destination raster operation mode

Add support for the negated destination operation mode. This is used e.g.
by AmigaOS for the INVERSEVID drawing mode. With this change, the cursor
in the shell and non-immediate window adjustment are working now.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
hw/display/sm501.c