American Megatrends Enterprise-IV User Manual page 8

Introduction to VL-Bus,
Continued
The following graphic shows the EISA and VL-Bus expansion slots. You can install 16-bit ISA or 32-bit
EISA adapter cards in any expansion slot, including the VL-Bus slots. The VL-Bus expansion slots include
one EISA slot that has both EISA and VL-Bus bus mastering (SLOT 6) slot and one VL-Bus master slot
(SLOT 7) that is an EISA non-bus mastering slot.
EISA or ISA adapter cards have no VL-Bus functionality when installed in a VL-Bus expansion slot.
The current VL-Bus expansion socket specification includes a 16-bit MCA® (Micro Channel Architecture)
expansion socket inline with a standard 32-bit EISA expansion socket connector.
A future VL-bus specification will use a 32-bit MCA connector (a total of 64 bits). The VL-Bus
specification supports 32-bit EISA adapter cards.
The VL-Bus Adapter Cards have a different set of connectors on the bottom of the card and will only fit in
the VL-Bus expansion slots.
Chapter 1 Introduction to VL-Bus
2