There are three kinds of error messages you might get while
using your computer:
. Boot errors, such as BOOT ERROR DC. See the
Boot Errors Table for more information.
. Operating system errors, such as ERROR 24 or
FILE NOT FOUND. To get a brief description of a
numbered error, type ERROR followed by the error
number displayed. For example, type:
ERROR 31 (ENTER)
and your screen shows:
PROGRAM NOT FOUND
For more information see the System Errors Table.
. Application program errors -- see your application
program manual.
When an error message is displayed:
. Try the operation several times.
. Look up boot errors and operating system errors in
the following tables and take the recommended
actions. See your application program manual for
explanations of application program errors.
. Try using other diskettes.
. Reset the computer and try the operation again.
. Check all the power connections.
. Check all interconnections.
. Remove all diskettes from drives, turn off the
computer, wait 15 seconds, and turn it on again.
. If you tried all these remedies and continue to get
an error message, contact a Radio Shack Service
Center.
Note: If more than one thing is wrong, the computer might
wait until you correct the first error before displaying the
second error message.
Error Message Explanation/Action
---------------- ----------------------- -------------------
BOOT ERROR CK Checksum error -- Contact RSSC.
possibly a defective
ROM.
BOOT ERROR CT Defective CTC Contact RSSC.
chip.
BOOT ERROR DC Floppy disk
controller error.
a. Defective a. Try a different
diskette. diskette.
b. Floppy disk b. Turn on the
expansion unit. floppy disk
not on. expansion unit.
c. Defective FDC c. Contact RSSC.
Chip or Drive.
BOOT ERROR DM DMA chip failure. Contact RSSC.
BOOT ERROR D0 Drive not ready.
a. Improperly a. Insert the
inserted diskette again
diskette. and press .
b. Defective b. Try a different
diskette. diskette.
c. Defective c. Contact RSSC.
drive.
BOOT ERROR HA Controller error. Re-initialize the
Aborted command: hard disk or contact
Problem during RSSC.
boot-up of hard
disk.
BOOT ERROR HC CRC error. Re-initialize the
Invalid data in hard disk or contact
data field. RSSC.
BOOT ERROR HD Controller error. a. Re-initialize the
Busy not reset. hard disk.
b. Power down, wait
10 seconds, and
power up.
If the error occurs
again, contact RSSC.
BOOT ERROR HI CRC error. Re-initialize the
Invalid data in hard disk.
ID field.
BOOT ERROR HM Data address Re-initialize the
mark not found. hard disk.
BOOT ERROR HN ID not found. Re-initialize the
No Boot Track. hard disk.
BOOT ERROR H0 Track 0 error
on hard disk.
a. Didn't find a. Press RESET.
Track 0 before
time-out.
b. Secondary hard b. Turn on your
disk drives secondary hard
not turned on. disk drives.
BOOT ERROR HT Time-out while
waiting for Ready.
a. Hard disk drive a. Follow correct
not powered up. procedure:
Turn on the
hard disk first.
b. Hard disk drive b. Press RESET.
isn't turned on
and ready within
10 seconds after
the computer.
c. Hard disk drive c. Connect the
is disconnected. hard disk drive
or operate
under floppy
disk control.
BOOT ERROR LD Lost data during Try another
read -- FDC (floppy TRSDOS-II diskette
disk controller) or or contact RSSC.
drive fault.
BOOT ERROR MF Memory failure in Contact RSSC.
address range
X'1000'-X'7FFF'.
BOOT ERROR MH Memory failure in Contact RSSC.
address range
X'8000'-X'FFFF'.
BOOT ERROR ML Memory failure in Contact RSSC.
address range
X'0000'-X'0FFF'.
BOOT ERROR PI Defective PIO Chip. Turn on the
expansion bay if it
is off. If the
error occurs again,
contact RSSC.
BOOT ERROR RS The diskette Insert a TRSDOS-II
in Drive 0 is not formatted diskette
Radio Shack operating into Drive 0 and
system format. press RESET.
BOOT ERROR SC CRC Error. Try a different
Invalid data on diskette.
diskette or defective
diskette.
BOOT ERROR TK Record not found Re-format your
bootstrap track. diskette or try a
Improperly formatted different diskette.
or defective diskette.
BOOT ERROR Z8 Defective CPU. Contact RSSC.
NOT A SYSTEM Diskette in Drive Insert a TRSDOS-II
DISK 0 isn't a TRSDOS-II operating system
operating system diskette into
diskette. Drive 0.
----
RSSC = Radio Shack Service Center.
Code Message Explanation/Action
------ ------------------------ -------------------------
0 No Error Found. No error occurred.
1 Bad Function Code Check the function code
On SVC Call Or No number used on the SVC
Function Exists. call.
2 Character Not No record or character
Available. was available when you
you called the SVC.
3 Parameter Error On Parameter is incorrect or
Call. a required parameter
is missing.
4 CRC Error During Disk Try the operation again,
I/O. using a different
diskette. If the problem
occurs often, contact
RSSC.
5 Disk Sector Not Found. Try a different diskette.
6 Attempt To Open A Close the file before
File Which Has Not re-opening.
Been Closed.
7 Illegal Disk Change. TRSDOS-II detected an
illegal disk swap.
8 Disk Drive Not Ready. Drive door is open or the
diskette is not in the
drive. On Thinline
drives, check the DRIVE
command settings.
9 Invalid Data Provided Data stream to be
By Caller. processed has illegal
characters.
10 Maximum Of 16 Files Too many files are open
May Be Open At Once. at once.
11 File Already In Filename already exists
Directory. as a directory entry.
Kill the existing file,
choose another filename,
or specify a drive
number.
12 No Drive Available No on-line drive
For An Open. a. is write enabled
b. has enough space to
create a new file, or
c. has a system
directory.
13 Write Attempt To A File was opened for read
Read Only File. only, not for read/write.
14 Write Fault On Disk Error occurred during a
I/O. write operation. Try a
different diskette. If
the problem continues,
contact RSSC.
15 Disk Is Write Write enable the disk.
Protected.
16 DCB Is Modified And DCB (used in machine-
Is Unusable. language programming) has
been modified since the
last disk access (while
the file was open).
17 Directory Read Error. Error occurred during an
attempt to read the
directory. Use a
different diskette.
18 Directory Write Error. Error occurred during an
attempt to write to the
directory. Use a
different diskette.
19 Improper File Name Filespec you gave does
(Filespec). not meet TRSDOS-II
standard file
specifications.
20 ** Unknown Error Code **
21 ** Unknown Error Code **
22 ** Unknown Error Code **
23 ** Unknown Error Code **
24 File Not Found. Filename you gave was not
found on the available
disks or the file is the
incorrect type for the
desired operation.
25 File Access Denied You gave an incorrect
Due To Password password. See
Protection. the ATTRIB command.
26 Directory Space Full. Number of filenames
has reached the amount
set when you formatted
the disk.
27 Disk Space Full. No space is available on
the disk.
28 Attempt To Read Specified record number
Past EOF. is past the EOF.
29 Read Attempt Outside Use valid record numbers.
Of File Limits.
30 No More Extents Use the COPY command to
Available (16 copy the files and
Maximum). reduce fragmentation.
See also SAVE/RESTORE and
MOVE.
31 Program Not Found. Specified program is not
found on the available
disks.
32 Unknown Drive Number Specified drive number
(Filespec). is not valid.
33 Disk Space Allocation Use the COPY command to
Cannot Be Made Due To copy the files and reduce
Fragmentation Of Space. fragmentation.
34 Attempt To Use A File specified for
NON Program File As execution is not a
A Program. program file or the load
address given is illegal.
Make sure you have a
system diskette in
Drive 0.
35 Memory Fault During Program is loaded
Program Load. incorrectly, possibly
because of faulty memory
or a "bad" load address.
36 Parameter For Open Check the OPEN statements
Is Incorrect. or the DCB for errors.
37 Open Attempt For A File specified for open
File Already Open. is already open.
38 I/O Attempt To An Open the file before
Unopen File. access.
39 Illegal I/0 a. I command not given
Attempt. after a diskette swap.
b. Can be caused by an
I/O attempt to a
differently formatted
disk. Format the disk
under the current
version of TRSDOS-II
or use FCOPY.
40 Seek Error. a. Data cannot be read
from the disk --
faulty disk.
b. When re-initializing a
hard disk, you must
also reformat the
secondary drives.
41 Data Lost During Disk Contact RSSC.
I/O (Hardware Fault).
42 Printer Not Ready. Check the connections,
power, ribbon, on-line
status, and so on.
43 Printer Out Of Paper. Check the printer's paper
supply.
44 Printer Fault (May Be Check the connections,
Turned Off). power, ribbon, on-line
status, and so on.
45 Printer Not Available. Check the connections,
power, ribbon, on-line
status, and so on.
46 Not Applicable To Operation performed is
VLR Type Files. not valid for VLR files.
47 Required Command Required parameter or
Parameter Not Found. argument is missing from
the command.
48 Incorrect Command Option or argument
Parameter. given in the command is
incorrect.
49 Hardware Fault Contact RSSC.
During Disk I/O.
50 Invalid Space The space descriptor that
Descriptor. tells TRSDOS-II which
extent to read next is
invalid. Try a different
diskette.
51-255 ** Unknown error code **
These codes are also returned to machine code routines
that call a SVC (System Service Call) of TRSDOS-II.
Register A usually has a return code after any function
call. The Z flag is set when no error occurs. Exceptions
are certain computational routines, which use Registers A
and F to pass back data and status information.
----
RSSC = Radio Shack Service Center.
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