Atari 400 Basic Reference Manual

~
~
~
o-+
~~
o-+ ~v~
~
o-+ ~v~
~
~~~v
6
~
~~~v ~'->
~~~v ~'->
'->~~v
+~'->c
~
o"+.~v
+~ '->c ~
o'+..~v
+~ '->c ~
~~'->c
~v
(>~
~~'->c
~v &
~~'->c ~v '->~
231
E7
240
FO
249
F9
232
E8
241
F1
250
FA
233
E9 242
F2
251
FB
234
EA
243
F3
252
FC
235
EB
244
F4
253
FD
1 .... 1 (Buzzer)
236
EC
245
F5 254
FE
[I] (Delete
character)
237
ED
246
F6
255
FF
[I] (Insert
character)
238
EE
247
F7
239
EF
248
F8
See Appendix H for a user program that performs decimal/hexadecimal conversion.
Notes:
1. ATASCII stands for "ATARI ASCII". Letters and numbers have the same values as those in ASCII, but
some of the special characters are different.
2. Except as shown, characters from 128-255 are reverse colors of 1 to 127.
3.
Add 32 to upper case code to get lower case code for same letter.
4. To get ATASCII code, tell computer (direct mode) to PRINT ASC (" ___ ") Fill blank with letter,
character, or number of code. Must use the quotes!
5.
On pages C-1 and C-3, the normal display keycaps are shown as white sym-
bols on a black background; on pages C-4 and C-6 inverse keycap symbols
are shown as black on a white background.
C-6 Appendix

Atari 400 Specifications

General

Manufacturer	Atari
Model	400
Type	Home Computer
Release Year	1979
CPU	MOS Technology 6502
CPU Speed	1.79 MHz
ROM	10 KB
Operating System	Atari OS
Keyboard	Membrane keyboard
RAM	8 KB (expandable to 48 KB)
Graphics	ANTIC and GTIA chips
Sound	4 channels
Display	RF output for connection to TV
Storage	Optional cassette tape drive or floppy disk drive
Ports	Cartridge
Display Resolution	320x192 (16 colors)