Specifications

88 SAM0023-122898 ESS Technology, Inc.

ES1869 DATA SHEET

APPENDIX A: ES1869 PNP ROM DATA EXAMPLE

16-bit address decode used with external device

decoding. A[15:12] and AEN should be all zero.

LDN #0 Control Interface

LDN #1 Audio (FM) MPU-401

LDN #2 Joystick

LDN #3 IDE CD-ROM

LDN #4 Modem (not used here)

NOTE: Contact your ESS sales representative or FAE for

the most current EPROM data code for your hardware

design.

; *********************************************************

;

; Start of ESS Proprietary Header (8 bytes)

;

; *********************************************************

0A5H ; PNP OK byte

059H ; IRQA = 9 IRQB = 5

0A7H ; IRQC = 7 IRQD = 10

0CBH ; IRQE = 11 IRQF = 12

010H ; DRQA = 0 DRQB = 1

053H ; DRQC = 3 DRQD = 5

002H ; MPU-401 part of audio, CD, DRQ latching off

00CH ; GPO1/GPI are not used by Modem DMA channel or g.p.

; *********************************************************

;

; Start of PNP Resource Header

;

; *********************************************************

016H, 073H, 018H, 069H ; "ESS1869A" product id for ES1869

0FFH, 0FFH, 0FFH, 0FFH ; serial number FFFFFFFF (not supported)

000H ; header checksum

00AH, 010H, 010H ; PNP 1.0, ESS version 1.0

082H, 023H, 000H, “ESS ES1869 Plug and Play AudioDrive”

; *******************************************************

;

; LOGICAL DEVICE 0 -- Configuration Ports

; 8 bytes at any I/O address that is a multiple of 8

;

; *******************************************************

015H, 016H, 073H, 000H, 006H, 000H ; ESS0006

047H, 001H, 000H, 008H, 0F8H, 00FH, 008H, 008H ; 800-FF8 8 bytes