Справочник Пользователя для IBM 560E

Audio Subsystem

Sound Blaster Support Function

The Sound Blaster support function provides three system settings:
I/O address, IRQ level, and DMA channel.

Audio Port Specifications

Audio Output:

–

⅛

-inch mini-jack for headphone

– Headphone speaker output: 22 mW (32 ohm) maximum
– Maximum output level: 2.4 V pp
– Output impedance: 75 ohm

Audio Input:

–

⅛

-inch mini-jack for microphone or line input

– Microphone gain: 26 dB minimum, 48.5 dB maximum
– Maximum input level:

Microphone:

125 mV pp

Line In:

4.0 V pp

– Input impedance:

Microphone:

47 k ohm

Line In:

30 k ohm

I/O Address

IRQ Level

DMA Channel

0220–022F (Default)
0240–024F
0338–033F (FM synthesizer)

IRQ 5 (Default)
IRQ 7
IRQ 10
IRQ 11

DMA 0
DMA 1 (Default)
–
–

3-6

ThinkPad 560/560E Subsystems