请问 gcdrom和xcdrom的参数/C0 /C1 /C2什么意思？

DEVICEHIGH=A:\GCDROM.SYS /D:CD2 /C0
DEVICEHIGH=A:\GCDROM.SYS /D:CD3 /C1
DEVICEHIGH=A:\GCDROM.SYS /D:CD4 /C2

DEVICE=XCDROM.SYS /D:MSCD000 /C0
DEVICE=XCDROM.SYS /D:MSCD001 /C1
DEVICE=XCDROM.SYS /D:MSCD002 /C2

GCDROM -- DOS SATA Native IDE CD-ROM Disk Driver, V2.3
==========================================

1. General Description
-------------------

GCDROM is a DOS driver for PC system SATA Native IDE CD-ROM drives.
The source code derive from XCDROM22 Projects.
Not support Legacy PATA mode IDE CD-ROM.


2. Setup and Configuration
-----------------------

GCDROM is loaded by the CONFIG.SYS file, which must have a command line
similar to:

GCDROM is loaded by the CONFIG.SYS file, which must have a command line
similar to:

DEVICE = GCDROM.SYS

you can use switch "/CNm" to select target controller, default is "/C0"

Examples: DEVICE=C:\DOS\GCDROM.SYS
DEVICEHIGH=C:\BIN\GCDROM.SYS /D:CDROM1 /C0

ok，谢谢

GCDROM.SYS 能取代XCDROM.SYS吗?