YMF715E Datasheet, PDF (15/54 Pages) YAMAHA CORPORATION – OPL3 Single-chip Audio System 3

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ɹ2-2. PnP ISA Configuration Register
OPL3-SA3 has the following Registers defined in the PnP ISA software.
0x00
Card Control
0x22
0x30
LDN=0, SA3 Sound System
0x75
LDN=1, Joy Stick
LDN=2, MODEM
LDN=3, CDROM
Listed below is the register map of card control register and logical device registers. For the detailed
description of each register, please refer to the Plug and Play ISA Specification 1.0a
Card Control Registers
Index R/W
D7
D6
D5
D4
D3
D2
D1
D0
00h
W
Set RD_DATA
01h
R
Serial Isolation
02h
W
Config Control
03h
W
Wake [CSN]
04h
R
Resource Data
05h
R
Status
06h R/W
Card Select Number
07h R/W
Logical Device Number
20h
W
Resource Data Write
21h
W
IKD RDWE
ɹRDWE : Resource Data Write Enable
Setting “1” to this bit means the host can download the resources data to EEPROM and
internal SRAM via 20h.
ɹIKD : Initiation Key Disable
Setting “1” to this bit means OPL3-SA3 should not detect the initiation key in the Wait for
Key state.
May 21, 1997
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