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This early COMPAQ Diagnostics diskette from the PCjs archives is noteworthy because it contains COMPAQ MS-DOS 3.31 system files that are more than one year older than any other release of COMPAQ MS-DOS 3.31 we’ve seen.
From README.CPQ
:
C O M P A Q (R) P E R S O N A L C O M P U T E R S
U S E R D I A G N O S T I C S A N D S E T U P
The USER DIAGNOSTICS diskette contains the TEST program as
well as SETUP. USER DIAGNOSTICS Version 5.08 and SETUP version
5.05 supercede any earlier versions located on other COMPAQ
USER PROGRAMS diskettes.
At the A> prompt, type the NUMBER of the utility for which
you want instructions and press the ENTER key.
1. Information about the TEST program.
2. Information about the SETUP program.
3. Information about the ROMREV program.
[PCjs Machine "deskpro386"]
Waiting for machine "deskpro386" to load....
Volume in drive A has no label
Directory of A:\
IBMBIO COM* 23591 9-16-87 12:00p
IBMDOS COM* 30632 9-16-87 12:00p
COMMAND COM* 25332 9-16-87 12:00p
AUTOEXEC BAT* 33 1-29-88 12:00p
CONFIG SYS* 12 1-29-88 12:00p
DISKCOPY COM* 6264 9-16-87 12:00p
ROMREV COM 1248 1-29-88 12:00p
USER EXE* 193264 1-29-88 12:00p
TEST COM 1984 1-29-88 12:00p
SETUP EXE 39968 1-29-88 12:00p
README CPQ 1464 1-29-88 12:00p
1 BAT 70 1-29-88 12:00p
2 BAT 71 1-29-88 12:00p
3 BAT 72 1-29-88 12:00p
TEST SCR 549 1-29-88 12:00p
SETUP SCR 652 1-29-88 12:00p
ROMREV SCR 518 1-29-88 12:00p
17 file(s) 325724 bytes
16384 bytes free