Commodore Amiga - Agnus; Features;Pin Configurations

AMIGA 1000 COMPONENT LEVEL REPAIR
CUSTOM ANIMATION CHIP
— Agnus —
FEATURES:
• Bit Blitter — Uses Hardware to Move Display Data — Allows High Speed Animation —
Frees the CPU for other Concurrent Tasks
• Display Synchronized Coprocessor
• Controls 25 DMA Channels — Allows the Disk and Sound to Operate with Minimal CPU
intervention
D 8 - 1
48
-D 9
D7 — 2
47
— D 10
D6 — 3
46 — D 11
D5 — 4
45 — D 12
D 4 -
5 44
— D 13
D3 — 6
43
— D14
D2 —
7
42
-D 1 5
D I 
8 41
-V S S
DO-
9 4 0 -H S Y
V C C - 10
39 — CSY
R E S - 11
38
-V S Y
IN T 3 - 12
8361 %
-FIR ©
DM AL—
13
-D R A 8
B L S - 14
35 -D R A 7
D B R -
15 34
-D R A 6
A R W -
16
33 -D R A 5
R G A 8- 17 32
-D R A 4
R G A 7-
18 31
-D R A 3
R G A 6- 19
30 -D R A 2
R G A 5- 20
29
-D R A 1
R G A 4 -
21
28
-D R A 0
R G A 3 - 22 27
-V S S
R G A 2-
23 26 — CCKQ
R G A 1- 24
25 — CCK
PIN DESIGNATION
FUNCTION TYPE
1-9
DO-D8
Data Bus Lines 0-8
I/O
10 Vcc
+ 5VDC
I
11 / RES
System Reset
I
12 /INT3
Interrupt Level 3
0
13
DMAL
DMA Request Line
I
14 /BLS
Blitter Slowdown
I
15 /DBR
Data Bus Request 0
16
/ARW Agnus Ram Write 0
17-24 RGA1-8
Register Address 1-8
I/O
25
CCK Color Clock
I
26
CCKQ
Color Clock Delay
I
27 Vss
Ground
I
28-36 DRAO-8
Dynamic Ram Address 0-8 0
37 /LP
Light Pen Input
I
38
/VSY
Vertical Sync
I/O
39
/CSY
Composite Sync 0
40
/HSY Horizontal Sync
I/O
41 Vss
Ground
I
42-48
D9-D15
Data Bus Lines 9-15
I/O
1-6