Disk Drive Controller; Keyboard And Mouse Interface; Isa Bridge Controller - Motorola MVME1603 Installation And Use Manual

Block Diagram

Disk Drive Controller

3

Keyboard and Mouse Interface

ISA Bridge Controller

3-12
The ISASIO device incorporates a low- and high-density disk drive
controller for use with an optional disk drive. The disk drive may take the
form of a mezzanine board or a separate module. The drive interfaces with
the ISASIO controller via base board connector J6. The unit receives
power via connector J16 (on the MVME1600-001) or J19 (on the
MVME1600-011).
The ISASIO disk drive controller is compatible with the DP8473, 765A,
and N82077 devices commonly used to implement floppy disk controllers.
Software written for those devices may be used without change to operate
the ISASIO controller. The ISASIO device may be used to support any of
the following devices:
3 1 -inch 1.44MB floppy disk drive
/
2
5 1 / -inch 1.2MB floppy disk drive
4
Standard 250kbps to 2Mbps tape drive system
On the MVME1600-001 base board, the ISASIO device provides ROM-
based keyboard and mouse interface control. The front panel of the
MVME1600-001 board has two 6-pin circular DIN connectors for
keyboard and the mouse connections.
The MVME1603/MVME1604 uses an Intel S82378ZB bridge controller
to supply the interface between the PCI local bus and the ISA system I/O
bus (diagrammed in Figure 1-1 and Figure 1-2 for the two base boards).