├── IBM PC AT ├── AT BIOS V1 │ ├── ATLINK │ ├── BIOS.ASM │ ├── BIOS1.ASM │ ├── BIOS2.ASM │ ├── DISK.ASM │ ├── DSEG.SRC │ ├── DSKETTE.ASM │ ├── EXE2BIN │ ├── FILL.ASM │ ├── GDT_BLD.ASM │ ├── IAPX286.MAC │ ├── KYBD.ASM │ ├── ORGS.ASM │ ├── POSTEQU.SRC │ ├── PRT.ASM │ ├── README.TXT │ ├── RS232.ASM │ ├── SEGMENT.SRC │ ├── SIDT_BLD.ASM │ ├── SYSDATA.INC │ ├── SYSDATA.MAC │ ├── SYSINIT1.ASM │ ├── TEST1.ASM │ ├── TEST2.ASM │ ├── TEST3.ASM │ ├── TEST4.ASM │ ├── TEST5.ASM │ ├── TEST6.ASM │ ├── TEST7.ASM │ └── VIDEO1.ASM ├── AT BIOS V2 │ ├── ATLINK │ ├── BIOS.ASM │ ├── BIOS1.ASM │ ├── BIOS2.ASM │ ├── DISK.ASM │ ├── DSEG.INC │ ├── DSKETTE.ASM │ ├── EXE2BIN │ ├── FILL.ASM │ ├── IAPX286.INC │ ├── KYBD.ASM │ ├── ORGS.ASM │ ├── POSTEQU.INC │ ├── PRT.ASM │ ├── README.TXT │ ├── RS232.ASM │ ├── SYSDATA.INC │ ├── TEST1.ASM │ ├── TEST2.ASM │ ├── TEST3.ASM │ ├── TEST4.ASM │ ├── TEST5.ASM │ ├── TEST6.ASM │ └── VIDEO1.ASM └── AT BIOS V3 │ ├── ATLINK │ ├── BIOS.ASM │ ├── BIOS1.ASM │ ├── BIOS2.ASM │ ├── DISK.ASM │ ├── DSEG.INC │ ├── DSKETTE.ASM │ ├── EXE2BIN │ ├── FILL.ASM │ ├── IAPX286.INC │ ├── KYBD.ASM │ ├── ORGS.ASM │ ├── POSTEQU.INC │ ├── PRT.ASM │ ├── README.TXT │ ├── RS232.ASM │ ├── SYSDATA.INC │ ├── TEST1.ASM │ ├── TEST2.ASM │ ├── TEST3.ASM │ ├── TEST4.ASM │ ├── TEST5.ASM │ ├── TEST6.ASM │ └── VIDEO1.ASM ├── IBM PC XT 286 ├── BIOS.ASM ├── BIOS1.ASM ├── BIOS2.ASM ├── DISK.ASM ├── DSEG.INC ├── DSKETTE.ASM ├── EXE2BIN ├── FILL.ASM ├── IAPX286.INC ├── KYBD.ASM ├── ORGS.ASM ├── POSTEQU.INC ├── PRT.ASM ├── README.TXT ├── RS232.ASM ├── SYSDATA.INC ├── TEST1.ASM ├── TEST2.ASM ├── TEST3.ASM ├── TEST4.ASM ├── TEST5.ASM ├── TEST6.ASM ├── VIDEO1.ASM └── XT286LNK ├── IBM PC XT ├── XT BIOS V1 │ ├── README.TXT │ └── XTBIOS.ASM ├── XT BIOS V2 │ ├── BIOS1.ASM │ ├── DSEG.INC │ ├── DSKETTE.ASM │ ├── EXE2BIN │ ├── FILL.ASM │ ├── HEADER.ASM │ ├── KEYBRD.ASM │ ├── POST.ASM │ ├── POSTEQU.INC │ ├── PRT.ASM │ ├── README.TXT │ ├── RS232.ASM │ ├── VIDEO.ASM │ └── XTLINK └── XT BIOS V3 │ ├── BIOS1.ASM │ 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