Creative SB0350 Hardware Programming Guide - Page 119
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Sound Blaster I/O Address Maps A-5 SB2CD I/O Address Map Sound Blaster 2.0 CD Interface uses base I/O address 250h or 260h. These are jumper selectable. Base Address 250h 260h I/O Addresses Used 250h to 255h 260h to 265h Table A-7: SB2CD 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 + 4h Base + 5h Description CD-ROM Command or Data Register CD-ROM Status Register CD-ROM Reset Register CD-ROM Enable Register Mixer chip Register Address Port Mixer chip Data Port Access Read/Write Read Only Write Only Write Only Write Only Read/Write Table A-8: SB2CD I/O Port Functions
Sound Blaster I/O Address Maps
A-5
SB2CD I/O Address Map
Sound Blaster 2.0 CD Interface uses base I/O address 250h or 260h.
These are
jumper selectable.
Base Address
I/O Addresses Used
250h
250h to 255h
260h
260h to 265h
Table A-7: SB2CD I/O Ports
The following table lists the functions of the I/O ports:
I/O Address
Description
Access
Base + 0h
CD-ROM Command or Data Register
Read/Write
Base + 1h
CD-ROM Status Register
Read Only
Base + 2h
CD-ROM Reset Register
Write Only
Base + 3h
CD-ROM Enable Register
Write Only
Base + 4h
Mixer chip Register Address Port
Write Only
Base + 5h
Mixer chip Data Port
Read/Write
Table A-8: SB2CD I/O Port Functions