PCjs Machines

Home of the original IBM PC emulator for browsers.


DoubleDOS 2.1F

This version of DoubleDOS comes from the PCjs Software Archive and likely patched as well (e.g., to disable copy protection), since the date for DOUBLEDO.EXE is almost a year newer than the rest of the files.

It also seems to be very DOS version-sensitive. It crashes on PC DOS 2.00 but appears to work OK on PC DOS 2.10, so that’s what we boot with here. A directory listing of the 160Kb diskette is provided below.

[PCjs Machine "ibm5160-doubledos"]

Waiting for machine "ibm5160-doubledos" to load....

Directory of DoubleDOS 2.1F

 Volume in drive A has no label
 Directory of A:\

IBMBIO   COM*     1920   1-01-80  12:00a
IBMDOS   COM*     6400   1-01-80  12:00a
COMMAND  COM     17792  10-20-83  12:00p
READ_ME  1ST      4992   4-16-84   3:14p
DOUBLEDO EXE     38912   2-28-85   9:13p
DOUBLED2 PGM     23552   4-16-84   3:36p
SWITCH   EXE      1408   4-16-84   3:22p
SWITCH   ASM      1534   4-16-84   3:40p
123DRIVE BAT       675   4-16-84   2:43p
DBLDMONO DRV       798   4-05-84   2:58p
DBLDCOLO DRV      5363   4-05-84   2:58p
DBLDHERC DRV      5330   3-31-84   2:20p
DBLDB&W  DRV      5363   3-31-84   2:56p
DBLDCPQ  DRV       798   3-31-84   4:47p
DBLDANSI SYS      1698   4-05-84   2:59p
PRNAME8  VER        36   4-16-84   3:37p
DOUBLED1 EXE     11264   1-01-80  12:14a
       17 file(s)     127835 bytes
                       25088 bytes free