Intel 460GX - Manual (Page 202)

LPC/FWH Interface Configuration
11-12 Intel® 460GX Chipset Software Developer’s Manual
11.1.25 LPC Sound Decode Ranges (Function 0)
Address: E2h
Default Value: 00h
Attributes: Read/Write
11.1.26 LPC Generic Decode Range (Function 0)
Address: E4-E5h
Default Value: 0000h
Attributes: Read/Write
Bit Description
7:6 Reserved.
5:4 Microsoft Sound System Decode Range: The following table describes which range to
decode for the MSS port:
Bits Decode Range
00 530 - 537
01 604 - 60B
10 E80 - E87
11 F40 - F47
3 MIDI Decode Range: The following table describes which range to decode for the Midi Port
Bits Decode Range
0 330 - 331
1 300 - 301
2 Reserved.
1:0 SB16 Decode Range: The following table describes which range to decode for the Sound
Blaster 16 Port
Bits Decode Range
00 220 - 233
01 240 - 253
10 260 - 273
11 280 - 293
Bit Description
15:9 Base Address: Base Address for the generic decode range. This address is aligned on a 512
byte boundary, and being I/O, must have address lines 31:16 as “0”.
8:1 Reserved.
0 Enable: When set, the range defined by the Base Address register is enabled for decode.