IBM 770 manual IDE Channel on the UltraBay, MIDI/Joystick Port, MIDI Interface, Joystick Interface

IDE Channel on the UltraBay II

A primary IDE channel is provided on the UltraBay connector, providing two system settings:

I/O Address	IRQ Level
01F0–01F7	IRQ 14
03F6

A secondary IDE channel is provided on the UltraBay connector, providing two system settings:

I/O Address	IRQ Level
0170–0177	IRQ 15
0376

If	a	hard	disk	is attached to the hard disk connector, an IDE device
on	the	UltraBay		becomes a primary slave. (The hard disk attached
to	the hard		disk	connector	is the primary master.) If no hard disk is
attached to			the	hard disk	connector, an IDE device on the UltraBay
is	a	primary	master.

MIDI/Joystick Port

The MIDI/joystick port consists of the following functions:

ŸMIDI port (in/out)

ŸJoystick port

A standard game port connector is provided with a MIDI/joystick cable.

MIDI Interface

A MIDI communication	function is provided	with	the DSP	subsystem.
The MIDI interface	is compatible with	MPU-401	(UART	mode).

Joystick Interface

A joystick interface is provided at I/O address 0201. You can select whether to enable or disable it with the ThinkPad Features program.

3-14 Subsystems