Creative SB0350 Hardware Programming Guide - Page 118
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A-4 Sound Blaster I/O Address Maps SB2.0 I/O Address Map Sound Blaster 2.0 uses base I/O address 220h or 240h. These are jumper selectable. Base Address 220h 240h I/O Addresses Used 220h to 22Fh 240h to 24Fh Table A-5: SB2.0 I/O Ports The following table lists the functions of the I/O ports: I/O Address Base + 0h Base + 1h Base + 2h Base + 3h Base + 6h Base + 8h Base + 8h Base + 9h Base + Ah Base + Ch Base + Ch Base + Eh Description C/MS Music Voice 1-6 Data Port C/MS Music Voice 1-6 Register Port C/MS Music Voice 7-12 Data Port C/MS Music Voice 7-12 Register Port DSP Reset FM Music Status Port FM Music Register Port FM Music Data Port DSP Read Data Port DSP Write Command/Data DSP Write-Buffer Status (Bit 7) DSP Read-Buffer Status (Bit 7) Access Write Only Write Only Write Only Write Only Write Only Read Write Write Only Read Only Write Read Read Only Table A-6: SB2.0 I/O Port Functions The C/MS Music Voice ports apply only when the C/MS chips are present. FM music can also be accessed through I/O addresses 388H and 389H.