RBIL61 - Serial I/O

PORTIBM PC Portable (uses same BIOS as XT) 0338-033F - COM port addresses on UniRAM card by German magazine c't
PORTIBM PC Portable (uses same BIOS as XT) 3220-3227 - serial port 3, description same as 03F8
PORTIBM PC Portable (uses same BIOS as XT) 3228-322F - serial port 4, description same as 03F8
PORTIBM PC Portable (uses same BIOS as XT) 5220-5227 - serial port, description same as 03F8
PORTIBM PC Portable (uses same BIOS as XT) 5228-522F - serial port, description same as 03F8
PORTIBM PC Portable (uses same BIOS as XT) 82F8-82FF - serial port, description same as 03F8
PORTIBM PC Portable (uses same BIOS as XT) 83F8-83FF - serial port, description same as 03F8
PORTIBM PC Portable (uses same BIOS as XT) A220 - soundblaster support in AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. Hi-Flex BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. ????
PORTIBM PC Portable (uses same BIOS as XT) B220-B227 - serial port, description same as 03F8
PORTIBM PC Portable (uses same BIOS as XT) B228-B22F - serial port, description same as 03F8
PORTIBM PC Portable (uses same BIOS as XT) C220-C227 - serial port, description same as 03F8
PORTIBM PC Portable (uses same BIOS as XT) C228-C22F - serial port, description same as 03F8
PORTIBM PC Portable (uses same BIOS as XT) D220-D227 - serial port, description same as 03F8
PORTIBM PC Portable (uses same BIOS as XT) D228-D22F - serial port, description same as 03F8