Atari 800 Basic Reference Manual

ERROR
CODE NO.
16
17
18
Note:
19
20
21
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
ERROR CODE MESSAGE
RETURN Error: A RETURN was encountered without a matching GOSUB.
Garbage Error: Execution of"garbage" (bad RAM bits) was attempted. This error
code may indicate a hardware problem, but may also be the result of faulty use of
POKE. Try typing NEW or powering down, then re-enter the program without
any POKE commands.
Invalid String Character: String does not start with a valid character, or string
in VAL statement is not a numeric string.
The following are INPUT /OUTPUT errors that result during the use of disk
drives, printers, or other accessory devices. Further information is pro-
vided with the auxiliary hardware.
LOAD program Too Long: Insufficient memory remains to complete LOAD.
Device Number Larger than 7 or Equal to 0.
LOAD File Error: Attempted to LOAD a non-LOAD file.
BREAK Abort: User hit M,!;@M key during I/0 operation.
IOCB
1
already open.
Nonexistent Device specified.
IOCB Write Only. READ command to a write-only device (Printer).
Invalid Command: The command is invalid for this device.
Device or File not Open: No OPEN specified for the device.
Bad IOCB Number: Illegal device number.
IOCB Read Only Error: WRITE command to a read-only device.
EOF: End of File read has been reached. (NOTE: This message may occur when
using cassette files.)
Truncated Record: Attempt to read a record longer than 256 characters.
Device Timeout. Device doesn't respond.
Device NAK: Garbage at serial port or bad disk drive.
Serial bus input framing error.
Cursor out of range for particular mode.
Serial bus data frame overrun.
1
IOCB refers to Input/Output Control Block. The device number is the same as the IOCB number.
B-2 Appendix

Atari 800 Specifications

General

Processor	MOS Technology 6502
Processor Speed	1.79 MHz
ROM	10 KB
Graphics	ANTIC and GTIA chips
Release Year	1979
Display Resolution	up to 320 x 192
Colors	128 colors
Sound	4 channels
Storage	Cartridge, cassette, floppy disk
Ports	Cartridge, serial, monitor
Operating System	Atari OS