Alphanumeric Television Interface Controller (Antic); Antic Pin Assignments - Atari CX 5200 Field Service Manual

Alphanumeric
Televison Interface Controller
(ANTIC)
The primary
function of the
Alphanumeric
Television Interface Controller
(ANTIC)
chip
is
to get
data from memory,
independent of the processor,
for display
on the
video screen.
Figure
1-4 shows
the
pin
assignments
for
the
ANTIC.
GROUND
VS5
GTIA
DATA AN0
GT1A
DATA
ANt
Light
Pen
LF
GTIA
DATA
AN2
Hot Connected
RNM1
Interrupt
Output
NM1
Refresh
REF—
HALT
HALT
Address Bus
A3
Address Bus
A2
Address
Bus
A1
Address Bus
A0
Read/Write
R/'V
Ready
RDY
Address Bus
A10
Address Bus
A12
Address Bus
A13
Address Bus
A14
Address Bus
A15
1
40
2
39
3
38
4
37
5
36
6
35
7
34
8
33
9
32
10
ANTIC
31
11
30
12
29
13
28
14 27
15
26
16
25
17
24
18
23
19
22
20
21
D4 Data Bus
D5 Data
Bus
D6
Data Bus
D7 Data
Bus
RE.S
Reset
FPh#
Fast Phase
0
Clock
Ph#
Phase
0
Clock
D3
Data Bus
D2
Data Bus
D1 Data Bus
Dd
Data Bus
Ph2 Phase
2
Clock
A4
Address Bus
A
5
Address Bus
A
6
Address Bus
A7
Address Bus
A8
Address Bus
A9
Address Bus
All
Address
Bus
VCC 5V
Power
Figure
1-4.
ANTIC
Pin
Assignments
CX5200
Field
Service
Manual
1-5