From OSDev Wiki
The first link is a great general reference for other NIC chipsets as well because it goes through step-by-step instructions on how to do things like IRQ and DMA handling.
- Writing Drivers for the DP8390 NIC Family of Ethernet Controllers
- DP8390D/NS32490D NIC Network Interface Controller, Architecture
Datasheets and Guides for the DP8390 chipset family.