Creative SB0350 Hardware Programming Guide - Page 117

Sound Blaster I/O Address Maps A-3 SBMCV I/O Address Map Sound Blaster for Micro Channel Version uses I/O addresses 2x0h - 2xFh, where x is a number from 1 to 6. Base Address 210h 220h 230h 240h 250h 260h I/O Addresses Used 210h to 21Fh 220h to 22Fh 230h to 23Fh 240h to 24Fh 250h to 25Fh 260h to 26Fh Table A-3: SBMCV I/O Ports The following table lists the functions of the I/O ports: I/O Address Base + 6h Base + 8h Base + 8h Base + 9h Base + Ah Base + Ch Base + Ch Base + Eh Description 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 Read Write Write Only Read Only Write Read Read Only Table A-4: SBMCV I/O Port Functions FM music can also be accessed through I/O addresses 388h and 389h.