Atari 400 - Page 292

290 User's Ha ndbook to the Atari 400 / 800 Computers
Error
#
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Error Name
IO CB Writ e Only
Invalid Command
Devi ce/ File
Not Open
Bad IO CB
Number
IO CB R ea d
Onl y Error
End of File
Trun
ca ted Record
138 Device
Tim eo ut
139 Devi
ce NAK
Cause & Recovery
An att empt was made to r ea d from a
file opened
on ly for write oper-
ations. Th e file must be r eo pened
for a read or read/ write ope ration.
This e
rror is generall y ca u se d by an
ill ega l comma nd code be ing us ed
with an X IO or IO CB co mmand.
A channel was referenced before it
was ope ned.
An att e
mpt was made to use an il-
l ega llO CB ind ex. A BASIC program
ca n on ly use channels 1-7.
An attempt was made
to write to a
devi
ce or fi le that is ope ned on ly for
read ope rati ons.
Th e end -of-f ile record was reached.
This error occurs
when an attempt is
made to r ea d a r ecord whose record
size is larger than the all owed ma xi-
mum. This e rr or al so occurs when
an INPUT stat eme nt is u se d to r ea d
from a fi le cr ea ted with a PUT
co mmand .
Th e ex ternal devi ce specifi ed does
not respond within the time al-
low ed by the Atari ope rating sys-
tem. Be ce rtain the prop er devi ce
was specified , the device is properly
connected, an d that the device's
pow er is on.
Th e device does n ot respo nd, as it
received an incorrect paramete
r.
Check th e input/output co mmand