Creative SB0350 Hardware Programming Guide - Page 123

Sound Blaster I/O Address Maps A-9 SB16 I/O Address Map Sound Blaster 16 uses base I/O address 220h, 240h, 260h or 280h. These are jumper selectable. Base Address 220h 240h 260h 280h I/O Addresses Used 220h to 233h 240h to 253h 260h to 273h 280h to 293h Table A-14: SB16 I/O Ports The following table lists the functions of the I/O ports: I/O Address Base + 0h Base + 0h Base + 1h Base + 2h Base + 2h Base + 3h Base + 4h Base + 5h Base + 6h Base + 8h Base + 8h Base + 9h Base + Ah Base + Ch Base + Ch Base + Eh Base + 10h Base + 11h Base + 12h Base + 13h Description FM Music Status Port FM Music Register Address Port FM Music Data Port Advanced FM Music Status Port Advanced FM Music Register Address Port Advanced FM Music Data Port Mixer chip Register Address Port Mixer chip Data 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) CD-ROM Command or Data Register CD-ROM Status Register CD-ROM Reset Register CD-ROM Enable Register Access Read Write Write Only Read Write Write Only Write Only Read/Write Write Only Read Write Write Only Read Only Write Read Read Only Read/Write Read Only Write Only Write Only Table A-15: SB16 I/O Port Functions FM music can also be accessed through I/O addresses 388h and 389h.