INT 1A - SET UP SOUND MULTIPLEXOR (PCjr ONLY)

Input

Output

AX

 80h Source     AX

BX

         BX

CX

         CX

DX

         DX
ES:DI     ES:DI 
Source: 0 = 8253 channel 2              2 = I/O channel "Audio IN"
        1 = cassette input              3 = Sound generator chip


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