Crystal LAN CS8920, Техническое справочное руководство, Страница: 51 / 67

AN84REV1 51
CS8920 Technical Reference Manual
DB 0x01 ; Decode 16-bit ISA addresses
DB 0x00 ; Bits 7:0 of IO base min address
DB 0x02 ; Bits 15:8 OF IO base min address
DB 0x60 ; Bits 7:0 of IO base max address
DB 0x03 ; Bits 15:8 OF IO base max address
DB 0x10 ; 16 ports needed
DB 0x10 ; IO base paragraph aligned
;-------------------------------------------------------------
; Memory Descriptor 0, 16K Boot ROM
;-------------------------------------------------------------
DB 0x81 ; Large Item, Memory Descriptor 0
DB 0x09 ; Descriptor length = 9 bytes
DB 0x00
DB 0x40 ; 8-bit ROM, non-shadowable, non-cacheable
DB 0x80
DB 0x0C ; Min Base Address = 0xC8000
DB 0x00
DB 0x0F ; Max Base Address = 0xF0000
DB 0x00
DB 0x20 ; Base Alignment
DB 0x40
DB 0x00 ; Range Length
;-------------------------------------------------------------
; Memory Descriptor 1 - 4K Shared Memory (RAM)
;-------------------------------------------------------------
DB 0x81 ; Large Item, Memory Descriptor 1
DB 0x09 ; Descriptor length = 9 bytes
Figure 3.4.1. Example PnP Resource Data Record (part 3 of 4)