Hardware manual

EUROCOM-17-5xx 3 Programmers Reference
Hardware Manual 57
3.4 Graphics Interface
3.4.1 Video Graphics
Address Map
Table31: Video Address Map
Address Access to Port Size
(Bit)
Access Type
$0FC0.0000-
$0FCF.FFFF
Video Memory 1 MB 32/16/8 read/write
burst
$0FE0.0000-
$0FEF.FFFF
Overlay Memory 0.5 MB 32/16 read/write
burst
$FEC4.0000-
$FEC4.0007
Direct Register of Bt445 8 read/write
$FEC4.0008-
$FEC4.7FFF
Mirrored Direct Register of Bt445
$FEC4.8000-
$FEC4.8007
Address and Sync Generator 8 write only
$FEC4.8008-
$FEC4.FFFF
Mirrored Address/Sync Generator