The following table attempts to explain the numbers that are displayed ollowing a SYSTEM FAILURE.
A system failure is generally a hardware problem. Try recreating the same error with
the same software on another Apple III to confirm if it is software or hardware that is
causing the failure.
Copying certain protected diskettes will cause an error $06 when the copy is booted. This
is a normal effect of the protection scheme.
$01 BADBRK Break instruction from within SOS
$02 BADINT1 Interrupting device not found
$03 BADINT2 Bad zero page allocation
$04 NMIHANG Unable to lock NMI
$05 EVQOVFL Event queue overflow
$06 STKOVFL 6502 stack overflow
$07 BADSYSCALL DMGR detected invalid request code
$08 MCTOVFLOW DMGR - too many device handlers
$09 MEM2SML Memory size less than 64K
$0A VCBERR BFMGR - volume control block not useable
$0B FCBERR File control block crashed
$0C ALCERR Allocation blocks invalid
$0D DIRERR Directory is not correct
$0E TOOLONG Pathname buffer overflow
$0F BADUFNUM Invalid buffer number
$010 BADBUFSIZ Invalid buffer size (=0 or >16K)
BFMGR Block file manager
DMGR Device Manager