1. 3C503N.EXE Driver
2. PROTOCOL.INI File Contents

PROTOCOL.INI Driver File Contents (3C503N.EXE)

;
;   3c503 3Com EtherLink II adapter
;
    DRIVERNAME = ELNKII$
;       2nd driver name = ELNKII2$
    INTERRUPT = 3
;       interrupt channel number (required, default = 3)
;       Use 2,3,4,5   Software selectable
    IOADDRESS = 0x300
;       adapter base address (required, default = 0x300)
;       Must match the I/O base address jumper setting on the adapter
;       Use 0x250, 0x280, 0x2A0, 0x2E0, 0x300, 0x310, 0x330, 0x350
    DMACHANNEL = 1
;       DMA channel number (optional, default = 1)
;       Use 1 or 3, software selectable
;   DATATRANSFER = SINGLE_DMA     ;Single mode dma, slow, but compatable
;   DATATRANSFER = BLOCK_DMA      ;Block mode dma, faster DMA method
;   DATATRANSFER = DEMAND_DMA     ;Demand mode dma, fastest DMA method
;         If DMA does not work in your computer,
;         or there's no DMA channel available
;         or your running MicroSoft Windows 3.0, use
;   DATATRANSFER = PIO_WORD
;         Programmed I/O word mode xfer (use on 286, 386 machines)
;   DATATRANSFER = PIO_BYTE
;         Programmed I/O byte mode xfer (use on very fast 386, 486 machines)
;   MAXTRANSMITS = 40
;       number of transmit queue elements (optional, default = 8)
;       Min = 8, Max = 50
;       Use the default for DOS and normal OS/2 clients
;       Set MAXTRANSMITS = 40 for OS/2 servers
;   XMITBUFS = 2
;       number of adapter resident xmit buffers (optional, default = 2)
;       Min = 1, Max = 2
;   NETADDRESS = "02608C123456"
;       network address (optional, default = network address PROM value)
;       the network address is 12 hex digits enclosed in quotes
;   TRANSCEIVER = EXTERNAL
;       Ethernet connection method (optional, default = onboard)
;       EXTERNAL specifies the AUI (DIX) connector