Mode "16 color" per pixel (actually only 15 colors):
Enable: #EFF7 D0=1 - ON, 0 - OFF
Byte structure: 76543210 - IiGRBgrb
Pixel 0, 2, 4, 6 structure: igrb
Pixel 1, 3, 5, 7 structure: IGRB
Used rotate RAM page: pixel 0, 1 - #C000-D7FF, pixel 2, 3 - #4000-57FF, pixel 4, 5 - #E000-F7FF, pixel 6, 7 - #6000-77FF etc.
Characters structure:
#C000 #4000 #E000 #6000
#C100 #4100 #E100 #6100
.................................
#C700 #4700 #E700 #6700
The videomode used Bus Request mode. The "16 color" videomode is realized in the Pentagon-1024SL v2.2.
Standard published in the new version emulator UnrealSpeccy 0.36.6 (
http://www.alonecoder.narod.ru/ ).