Hi,
I got a 16bit ISA controller with 2x COM, 1x LPT, 1x game, 1x IDE, 1x FD.
The datasheet* tells about "Extension Adapter Mode". (Page 44, 46, 59)
This is a stripped down ISA Bus with just 3 address lines.
These are the signals:
/XWR
/XRD
XD0-XD7
XA0-XA2
XIRQ
XDRQ
/XDACK
TC
13 Signals for...