Husky MP2500 Manual page 316

Colour Graphics Adaptor (CGA)
Address
3D0
3D1
3D2 - as 3D0
3D3 - as 3D1
3D4 - as 3D0
3D5 - as 3D1
3D6 - as 3D0
3D7 - as 3D1
3D8
3D9
3DA
3DB
3DC
Diskette Controller
Address Operation
3F2
3F4
3F5
294
Operation Context
Read
Write
Read index=14..15
index=other
Write index=10..15
index=other
Read
Write
Read
Write
Read
Write
Read
Write
Read
Write
Context
Compatible?
YES
YES
YES
NO (ignored)
YES
NO (ignored)
YES (no effect on IBM)
YES
YES (no effect on IBM)
NO (ignored)
YES
YES (no effect on IBM)
YES (no effect on IBM)
NO (ignored)
YES (no effect on IBM)
NO (ignored)
Compatible?
NO (ignored)
NO (ignored)
NO (ignored)
H MP2500 System Developer's Guide
USKY