J7 Ide Interface Configuration - Motorola MBX Series Installation And Use Manual

Placing a jumper on J6 pins 1 and 2 configures the MBX for external
arbitration. Placing a jumper on J6 pins 2 and 3 (the default) configures the
MBX for internal arbitration.

J7 IDE Interface Configuration

IDE I/O controllers can be categorized as either "legacy" or "native"
devices. "Legacy" devices use a hard-wired addressing scheme with fixed
interrupt requests. The more recent "native" (also known as Bus Master
IDE) devices use controller registers that are relocatable in I/O space, with
interrupt requests mapped to the appropriate registers.
Use J7 to configure the IDE interface on MBX series boards as necessary
for the devices you have installed.
Placing a jumper on J7 pins 1 and 2 configures the IDE interface for native
addressing mode. Placing a jumper on J7 pins 2 and 3 (the default)
configures the IDE interface for legacy addressing mode.
For additional details on programming IDE devices, refer to the MBX
Series Embedded Controller Version B Programmer's Reference Guide
(listed in
http://www.motorola.com/computer/literature
J6
1 2 3
External Arbitration
J7
1 2 3
Native IDE Mode
Appendix B, Related
J7 IDE Interface Configuration
J6
1 2
Internal Arbitration
(factory configuration)
J7
1 2 3
Legacy IDE Mode
(factory configuration)
Documentation).
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