Output of the Workbench 1.x Assign command is incorrect with the AROS ROM. Boot a WB 1.3 disk, press Ctrl-D to break startup-sequence and type Assign. The output should look like this (under Kickstart 1.3; with 3.1 the order of directories/devices differs):
Volumes:
Workbench1.3 [Mounted]
Directories:
S Workbench1.3:s
L Workbench1.3:l
C Workbench1.3:c
FONTS Workbench1.3:fonts
DEVS Workbench1.3:devs
LIBS Workbench1.3:libs
SYS Workbench1.3:
Devices:
PRT PAR SER RAW CON
RAM DF0
However with the AROS ROM, output looks like this:
Volumes:
Workbench1.3 [Mounted]
Directories:
FONTS Volume: Workbench1.3
S Volume: Workbench1.3
L Volume: Workbench1.3
DEVS Volume: Workbench1.3
LIBS Volume: Workbench1.3
C Volume: Workbench1.3
SYS Volume: Workbench1.3
Devices:
RAM RAW CON DF0
Apart from the wrong "Volume: Workbench1.3" output, AROS doesn't have the DOS devices PRT, PAR and SER listed.
Something odd: Under Kickstart 2.04/3.1, booting a Workbench *1.1* disk and typing assign gives similar output to the AROS case above; it shows "Volume: Workbench" for each entry. So it looks like there's some BCPL incompatibility there even with later Kickstart versions. By comparison, booting a WB 1.1 disk with Kickstart 1.3 and typing Assign gives this:
Volumes:
Workbench1.3 [Mounted]
Directories:
S Volume: Workbench Dir: s
L Volume: Workbench Dir: l
C Volume: Workbench Dir: c
FONTS Volume: Workbench Dir: fonts
DEVS Volume: Workbench Dir: devs
LIBS Volume: Workbench Dir: libs
SYS Volume: Workbench Dir: Workbench
Devices:
PRT PAR SER RAW CON
RAM DF0
As of Feb 21, 2013, this appears to work.