Page 1
SYSTEM SCHEMATICS
A2630
NOVEMBER, 1989
PN-314033-01
z. commodore
COMPUTERS
Page 2
SYSTEM SCHEMATICS
A2630
NOVEMBER, 1989 PN-314033-01
Commodore Business Machines, Inc.
1200 Wilson Drive, West Chester, Pennsylvania 19380 U.S.A.
Commodore makes no express or implied warranties with
regard to the information contained herein. The infor
mation is made available solely on an as is basis, and the
entire risk as to completeness, reliability, and accuracy
is with the user. Commodore shall not be liable for any
damages in connection with the use of the information
contained herein. The listing of any available replacement
part herein does not constitute in any case a recommenda
tion, warranty or guaranty as to quality or suitability of
such replacement part. Reproduction or use without ex
press permission, of editorial or pictorial content, in any
matter is prohibited.
This manual contains copyrighted and proprietary information. No part
of this publication may be reproduced, stored in a retrieval system, or
transmitted in any form or by any means, electronic, mechanical, photo
copying, recording or otherwise, without the prior written permission
of Commodore Electronics Limited.
Copyright © 1989 by Commodore Electronics Limited.
All rights reserved.
Page 3
A2630 SYSTEM SCHEMATICS
DESCRIPTION
The A2630 68030 based Accelerator Card is an 86 pin Coprocessor Slot expansion card for the Amiga 2000. In addi
tion to a Motorola 68030, the A2630 has an onboard 68882 Floating Point Unit (FPU) which is nominally clocked
at the same rate. Provisions are provided on the board for the upgrade to a faster 68881 or 68882 clocked by its own
separate crystal oscillator. The 68030 is clocked at nearly four times the 7.16 Mhz of the Amiga 68000 CPU. Addi
tionally, the processor addresses a full 32 bit address range with a true 32 bit data path, doubling the data path of
68000. The A2630 is equipped with 2 or 4 megabytes of 32 bit wide DRAM which is autoconfigured and recognized
by the system as standard expansion bus FAST memory. The card is also equipped with 64K of 16 bit ROM which
is used for system initialization, diagnostics and system bootup time options.
TECHNICAL SPECIFICATIONS
Processor Motorola MC68030 clocked at 25Mhz with onboard instruction and data caches and built in memory
management unit (MMU).
Coprocessor Motorola MC68882 floating point math coprocessor clocked at 25Mhz. A 33 MHz MC68881 or
MC68882 can be used if the appropriate crystal is placed in U203 and jumpered as the clock for the FPU.
Memory 2 or 4 Megabytes of 32 bit data path, autoconfiguring memory. Memory type is 414256 Zip-style
package with speed of 100ns.
ROM
Card Type Full-size Amiga 2000 86-pin CPU slot.
Power Supplied by system.
Compatibility Compatible with the AmigaDOS operating system and platform engine for AMIX.
64K by 16 bits for power on initialization.
Compatible with most Amiga application software when the following are avoided:
1) use of upper 8 bits of 68000 addresses for tables
2) use of signed math on addresses
3) use of self-modifying code
4) running code on CPU stack
5) basing time dependent code on CPU speed
JUMPER CONFIGURATION
CLOCK CONFIGURATION JUMPERS
J200 Generally 2-3 are jumpered to gate -AS instead of delayed -AS
J202 Crystal Bridge. When in place, CPU crystal also clocks the FPU.
When removed, FPU is clocked by U203. If jumper is removed and FPU is present, crystal must be in U203
to clock FPU or the system will not boot.
SYSTEM CONFIGURATION JUMPERS
J301 MEG4. With the jumper in place, the system expects 2 megabytes, and removed, the system expects 4 megabytes
of DRAM.
J302 B2000. With this jumper present, the system expects to be installed in an A2000 with 68000 removed. Nominal
ly, with the jumper absent, the system expects a B2000, and through the mouse engaged bootup menu, can
boot the 68000 if desired.
J303 AUTO. With the jumper absent, the onboard memory is autoconfiged at bootup. If the jumper is present,
all onboard DRAM is disabled.
J304 OSMODE. With the jumper absent, the system autoboots AmigaDOS. If the jumper is present, the sytem will
attempt to autoboot AMIX.
1
Page 4
A2630 SYSTEM SCHEMATICS
A2630 ACCELERATOR CARD INTERNATIONAL PACKING ASSEMBLIES
312287-01 A2630 2M 25MHZ (U.S.)
363035-03 BULK PACKING BOX
363097-02 PACKING BOX
363183-01 MANUAL USER A2630 ENGLISH (SUB:)
363230-01 MANUAL USER A2630 ENGLISH, FRENCH,
SPANISH, GERMAN,
ITALIAN
318904-01 WARRANTY CARD (U.S.)
314877-02 SERVICE CENTER LIST
318928-01 PLASTIC BAG
312288-05 PCB ASSY A2630 (2M 25MHZ)
312287-02 A2630 2M 25MHZ (CANADA)
363035-03 BULK PACKING BOX
363097-02 PACKING BOX
363183-01 MANUAL USER A2630 ENGLISH (SUB:)
363230-01 MANUAL USER A2630 ENGLISH, FRENCH,
SPANISH, GERMAN,
ITALIAN
318882-01 WARRANTY CARD (CANADA)
318928-01 PLASTIC BAG
312288-03 PCB ASSY A2630 (2M 25MHZ)
312287-03 A2630 2M 25MHZ ENGLISH, FRENCH,
SPANISH, GERMAN,
ITALIAN
363035-03 BULK PACKING BOX
363097-02 PACKING BOX
363183-01 MANUAL USER A2630 ENGLISH (SUB:)
363230-01 MANUAL USER A2630 ENGLISH, FRENCH,
SPANISH, GERMAN,
ITALIAN
318928-01 PLASTIC BAG
312288-03 PCB ASSY A2630 (2M 25MHZ)
312287-04 A2630 2M 25MHZ ENGLISH, DUTCH,
DANISH, SWEDISH,
NORWEGIAN
363035-03 BULK PACKING BOX
363097-02 PACKING BOX
363183-01 MANUAL USER A2630 ENGLISH (SUB:)
363231-01 MANUAL USER A2630 ENGLISH, DANISH,
DUTCH, SWEDISH,
NORWEGIAN
318928-01 PLASTIC BAG
312288-03 PCB ASSY A2630 (2M 25MHZ)
312287-05 A2630 2M 25MHZ (AUSTRALIA)
363035-03 BULK PACKING BOX
363097-02 PACKING BOX
363183-01 MANUAL USER A2630 ENGLISH (SUB:)
363230-01 MANUAL USER A2630 ENGLISH, FRENCH,
SPANISH, GERMAN,
ITALIAN
318884-01 WARRANTY CARD (AUSTRALIA)
318928-01 PLASTIC BAG
312288-03 PCB ASSY A2630 (2M 25MHZ)
312287-06 A2630 4M 25MHZ (U.S.)
363035-03 BULK PACKING BOX
363097-02 PACKING BOX
363183-01 MANUAL USER A2630 ENGLISH (SUB:)
363230-01 MANUAL USER A2630 ENGLISH, FRENCH,
SPANISH, GERMAN,
ITALIAN
318904-01 WARRANTY CARD (U.S.)
314877-02 SERVICE CENTER LIST
318928-01 PLASTIC BAG
312288-04 PCB ASSY A2630 (4M 25MHZ)
312287-07 A2630 4M 25MHZ (CANADA)
363035-03 BULK PACKING BOX
363097-02 PACKING BOX
363183-01 MANUAL USER A2630 ENGLISH (SUB:)
363230-01 MANUAL USER A2630 ENGLISH, FRENCH,
SPANISH, GERMAN,
ITALIAN
318882-01 WARRANTY CARD (CANADA)
314877-02 SERVICE CENTER LIST
318928-01 PLASTIC BAG
312288-04 PCB ASSY A2630 (4M 25MHZ)
312287-08 A2630 4M 25MHZ ENGLISH, FRENCH,
SPANISH, GERMAN,
ITALIAN
363035-03 BULK PACKING BOX
363097-02 PACKING BOX
363183-01 MANUAL USER A2630 ENGLISH (SUB:)
363230-01 MANUAL USER A2630 ENGLISH, FRENCH,
SPANISH, GERMAN,
ITALIAN
318928-01 PLASTIC BAG
312288-04 PCB ASSY A2630 (4M 25MHZ)
312287-09 A2630 4M 25MHZ ENGLISH, DUTCH,
DANISH, SWEDISH,
NORWEGIAN
363035-03 BULK PACKING BOX
363097-02 PACKING BOX
363183-01 MANUAL USER A2630 ENGLISH (SUB:)
363231-01 MANUAL USER A2630 ENGLISH, DANISH,
DUTCH, SWEDISH,
NORWEGIAN
318928-01 PLASTIC BAG
312288-04 PCB ASSY A2630 (4M 25MHZ)
312287-10 A2630 4M 25MHZ (AUSTRALIA)
363035-03 BULK PACKING BOX
363097-02 PACKING BOX
363183-01 MANUAL USER A2630 ENGLISH (SUB:)
363230-01 MANUAL USER A2630 ENGLISH, FRENCH,
SPANISH, GERMAN,
ITALIAN
318884-01 WARRANTY CARD (AUSTRALIA)
318928-01 PLASTIC BAG
312288-04 PCB ASSY A2630 (4M 25MHZ)
2
Page 5
A2630 SYSTEM SCHEMATICS
COMPONENT PARTS LIST
PCB ASSEMBLY #312288
312288-05 — A2630 PCB ASSY 2MEG 25 MHZ R9.0
Commodore part numbers are provided for reference only and do not indicate the availability of parts from Commodore.
Industry standard parts (Resistors, Capacitors, Connectors) should be secured locally. Approved cross-references for TTL chips,
Transistors, etc. are available in manual form through the Service Department, order #314000-01.
IC COMPONENTS
318099-01 414256 DRAM ZIP, 100 NS
390110-01
31805001
390091-01
390081-01
901521-63
901521-46 74LS245
390281-01 74F646 U701-702
901525-16
390399-01 MC68030 CPU 16MHZ
390399-02 MC68030 CPU 25MHZ U200
390277-01 68881 FPU 16MHZ
390434-01 MC68882 FPU 25MHZ
901521-16
390404-02 PAL BUFFER CNTRL
39041002 PAL BYTE SELECT U603
390413-02 PAL CLOCK GEN U708
390407-02 PAL 68000 MACH STATE U505
390406-02 PAL COUNTER/RESET U504
390408-02 PAL 6800 MACH STATE U506
390409-02
39040002
390401-02
390405-03
390402-02 PAL MEMORY SELECT U305
390403-02 PAL COPROCESSOR CNTRL U306
390411-02 PAL RAS/BURST U600
390411-03
390282-04 ROM UNIX BOOT LOW U102
390283-04
OSCILLATORS
325566-10
325566-22
324667-03 DELAY LINE, 20 NS TAPS U604,605
IC SOCKETS
904150-08 20P 0.300 U500,504-506,601,603,
39006001 24P 0.600 U301,304-306,501,600
90415005 28P 0.600 U102,103
390296-01
390296-05 128P PGA
RESISTOR NETWORKS
326149-01 22 OHM, 4 X 8
390227-03 22 OHM, 5 X 10
902410-10 IK, 9 X 10
902442-29 3.3K, 7 X 8
90241006 3.3K, 9 X 10
902412-14
326146-04 47 OHM, 4 X 8
390227-06 47 OHM, 5 X 10
74F04
74F244 U606
74F257
74F74
74LS174 U302,303,700
74S05
74LS138
PAL REFRESH MACH STATE U601
PAL AUTOCONF1G U301
PAL CHIP SELECT
PAL 68000 INTERFACE U501
PAL RAS/BURST U600
ROM UNIX BOOT HIGH U103
16.000 MHZ, USE ON -01, -02 ASSY
25 MHZ, USE ON -03, -04, -05, -06 ASSY
68P PGA
IK, 8 X 9 RP100-107
U400-431
U307.204
U100,101,104
U502,503,507
U703-707
U300
U200
U201
U201
U602
U500
U304
U202
U202
708
U201
U200
RP401-404
RP400.700
RP201
RP300
RP200
RP401-404
RP202,400,700
RESISTORS 1/4 WATT
90155063
90155094
90155058
90155001
90155094
90155056
90155018
CAPACITORS
900019-24 330 PF, MLC, RADIAL
251318-06 .01 UF, MLC, RADIAL
900022-03 .1 UF, MLC, RADIAL
900022-01 .22 UF, MLC, RADIAL
900022-05 .33 UF, MLC, RADIAL C400-415
390101-06 10 UF, 16V, ELEC, RADIAL
390101-01 47 UF, 16V, ELEC, RADIAL C104,308,432,508,608,
900462-21 22 PF, MLC, AXIAL COG C210-213
900462-49 330 PF, MLC, AXIAL, COG
390082-02
390082-01 .10 UF, MLC, AXIAL, Z5U
390082-05 .22 UF, MLC, AXIAL, Z5U
390082-04
900402-09 10 UF, 16V, TANTALUM, RADIAL
900402-19 47 UF, 16V, TANTALUM, RADIAL
CONNECTORS
39048001 EUROCARD RECPT W/O EARS 64 POS CN300.301
39005501
903326-02 HEADER 2 PIN, SIL, .100 J301-304
903326-03 HEADER 3 PIN, SIL, .100
390043-01
903326-02 HEADER 2 PIN, SIL, .100
903326-03
39004301 SHUNT, FEMALE 2 POS
MISCELLANEOUS
90680005 SCREW, PAN HEAD, M3X6 QTY = 2
312724-01
31229401 SHIELD, RF COVER
31229501
22 OHM
68 OHM
470 OHM
IK
68 OHM
47 OHM
2.2K
.01 UF, MLC, AXIAL, Z5U C200-203
.33 UF, MLC, AXIAL, Z5U C400-415
EUROCARD RECPT 64 POS SUB
SHUNT, FEMALE, 2 POS
HEADER 3 PIN, SIL, .100
BRACKET, MOUNTING
SHIELD, RF FENCE
R400.401
R201,202
R301
R300,500-502,700
R203,204,207-211
R205,206,400,401,503,
600
R504-506.600
C710,714,205,207
C200-203
C204,206,208,711,715,
717
C100,101,4,5,300-307,
500-507,600-606,700-708
C709,712,718
713
C205.710
C204,206,208,711,717
C100-104,209,300-307,
500-507,600-606,700-708
C712.714.718
C105,308,432,508,608,
713
J200
J200,202,301
SEE JUMPER
SETTINGS
J202
JP202
JP202.301
3
Page 6
A2630 BOARD LA YOUT 0312288 (-01 & -03)
2) J202 SHORTED (USE SAME CLOCK FOR U200 AND U201)
3) J301 SHORTED (2 MEG OF RAM)
A2630 SYSTEM SCHEMATICS
Page 7
A2630 SYSTEM SCHEMATICS
A2630 BOARD LA YOUT U312288 (-02 & -04)
JUMPER SETTING FOR PCB ASSY., A2630 (4M RAM)
1) J200 SHORTED BETWEEN PINS 2 AND 3 (USE-AS)
2) J202 SHORTED (USE SAME CLOCK FOR U200 AND U201)
Page 8
Schematic #312289, Rev. A
Sheet 1 of 7
M R 8 0
A2630 SYSTEM SCHEMATICS
M U X O
17
F l 8
/19
X 12 11
F
14
8
/ 9
/10
F n
13
10
13 2
F m 5
F i s 14
F ib 11
F
4 3
F 5 6
F i n r
F v 10
F
R 0 Q0
5
fl l Q 1
R 2 Q2
A 3 Q 3
U 100
3
B 0
6
B 1
B 2
B 3 S _ 0 E
R 0 Q0
R 1 Q 1
1 I JL Lbl 1
A2 Q2
il C- W C -
R 3 Q 3
U 101
B 0
R 1
U 1
B ?
L J C -
RR
C
C
CO
74 F 257
4 4
7 s'
12 s'
9 7
15
74 F 257
4 0
7 i \
12 2\
9 s \
Q
m
15
j \
IK
\
\
C S R G M O
- t > M R ( 8 s 0 )
“171
U1GG
POWER
— fr ~
/ z
y
/<
/ 5
F/ 6
/ 1
/ *
/ 9
/ 1(?
/ w
/ 1?
/13
/14
/15
/ ] 6
r a r
GND
i
__
w
CD
CD '
CJ
20 22
L£
R 0
9
R 1
8
R 2
7
R 3
6
R 4 U 102
5
R 5
4
R 6
3
R 7
25
R 8
24
R 9
21
R 1 0
23
A l l
2
R 1 2
26
fl 1 3
?1
R 1 4
__
L
R 1 5
R 0M2725 6
♦ 22 u F
_ C E _ 0 E
D0
D 1
D2
D3
D4
D5
D6
D7
16
Vcc
U1G1
POWER
GND
± 1 _ 1 6
12 17\
13 i s \
15 19\
16 g s \
.L7...2i \
18 2g \
19 2 3\
CD '
CJ
. 22u F
" vcc
U102
POWER
OND
CJ
. 22 uF
/ . 3 .... 8
/ e 5
2F 1
F 9 25
F*-8 .24
F -U . -21.
F ig ,23
F l 3 2
F i s 27
F i s i
28
—vrtf—
Ul G3
POWER
GND
20 22
_ C E _ 0 E
JJ L
RO
fl l
R 2
p ^
R 4 U 103
R 5
R 6
R 7
R 8
R 9
R 1 0
f i l l
R 1 2
R 1 3
fl 1 4
R 1 5 D0
R0M27256I
LO-
O .
. 22u F
D 1
D2
D3
D 4
D5
D6
D7
C 1 04
1.1 - g *
12 2 s \
13 g e \
15 z A
16 g a \
17 29\
18 3s \
19 31. \
v c c
+
~4 7 u F
16V
R( 3 1 s0 )U >
D ( 3 1 S 0 ) < >
y
. z
Z.
6
Page 9
C205
Schematic #312289, Rev. A
Sheet 2 of 7
A2630 SYSTEM SCHEMATICS
CflCHEO-
_ R V E C O -
.S TE R MO -
74F04
_ C P U C L K < ^ ^ < ^
U3Q7
CPU C L K O-
_
B GTT
_
H R L T
-cpu* m
=B§0EM$:
= 01$ :
R J O
i i i J S :
3K
RP20Q
VCC
6
©
J2 0 2
SRM E CLO CK
CR YS T R L
OUT^
U2Q 3
VCC
-1— a a —1—U- S_L_ a L_ u
^ CM—r— CM — r - ® CM— I— :
o u 4 . u -T S
VCC
gT ^ T sZD T sZL u
U2B3 ° ° °
POWER
r
r p £ r p
/ 38
/ 29
/ 28
/Z7
/
/ 26
/ Zl_
/ 22
/ I T
/ 29
/ I T
/ ia
A T
/ m
/is
/ o r
/ m
/ 12
< 3 T
£
/i 11
D
/ n
/T L
< n
/
VCC
I
6^
“7 |
OS*
RS *
RMC*
R/W*
D
T
FC2
FC1
FC0
SIZ1
SIZ 0
J i
3 1
3 T
~ZI
3 1
■ ¥
~z
=F
3
1
R31
R30
R29
R28
R27
R26
R25
R24
R23
R22
R21
R20
R 1 9
R 1 8
fl 1 7
R 1 6
R 1 5
R 1 4
R 1 3
R 1 2
fll 1
R 1 0
R9
R8
R7
R6
R5
R4
R3
R2
. R 1
- R0
U5 edej O
■Mj ir. a. Hi
—
'Cm o v m -
lo co
ro c o c o
CJ o u O O C JC J C_)(_)CJ
CJ C J CJ C JC J C JC J C JC J C J
> » > > > > > > >
CLK I N
RVE C *
IPEN D*
BR*
BG*
IPL2
BGR C K *
I PL 1
I PL0
HRL T *
RES E T*
BER R*
CD IS*
MM U DI S *
ST RT U S *
STE R M*
RE FI L L *
DS R C K 1 *
DS R CK 0 *
U 2 0 0
CI OUT*
CD
O O
CD
O O
CD
X
CD*—'CM CO
cd—><M co m - in cor- coco
OCDQ □ □ □ □ □ D O O C DO O
zzz z z z z z zz z z zz
ebebeb cbcbcbcbcb ebeb cbcbcbcb
031
D30
D29
D28
027
026
025
024
023
D22
021
D20
D 19
D 1 8
D 17
D16
D 1 5
014
013
012
Dll
D 1 0
D9
D8
D7
D6
D5
D4
03
D2
01
D0
NC0
NCI
NC2
NC3
NC4
116
33“
05 “
r r r
i w
TTET
IT T
TW T
r a r
“08“
_ O T
rm ~
7 0
0 3 “
n r
vzr
T05“
I T T
mi
rrr
r r r
33“
r r r
r25 T
n r
r r r
87
TOT"
TT5~
IU2“
38
83“
44
53
58
59
85
38\.
3a \
0
_Z2 N
3 D
_2*\
-« o
ib\
12 N
D
- v
1
VCC
vcco
VCC1
VCC 2
VCC 3
VCC 4
VCC 5
VCC 6
1 4
_£ R
_3_9_
_ n
_5_L
D5.
_£ 2
_52.
__zz
_2 D
1 n
12
13
17
21
23
28
36
47
58
___
6_L
CM
O O
O O
O O
CD
S E N S E * C D
r w * rr
DS* 2 3
RS*
cs*
SIZ E *
DS R CK 1 *
DS R C K0 *
CLK
RES E T *
R4
R3
R2
fie U 2 0 1
GND 0
GND 1
GND 2
GND 3
GND4
GND 5
GND 6
GND 7
GND 8
GND 9
GND 10
G N D 1 1
GND 12
D31
D30
D29
D28
D27
D26
D25
024
D23
D22
D21
020
019
D 1 8
017
016
D 1 5
D 1 4
013
012
Dll
010
09
D8
D7
06
05
D4
D3
02
01
DO
53_
£_4_
£i__
fL5_
£5 _
££ _
£J—
n
■<□__! P L C 2 s Q )
- O
CBREQ
5 >|
D
3fiN
_2B N
ID
68
22\
58
2l\
41
2fl\
48
IlS
42 ib\
37
|7S
38
38
,n\
28 .
h\
25
n \
29
1 1
S
28
IlS
1 9 ib\
24
A
9
n\
8
A
7
fiN
1 fi
fi\
6
A
5 . _
a
1 5
a
4
,\
3
____
____
A
-<3_CBflCK
_£I>_DBEN
- o -
ECS
-<3_GR ES ET
-<3_FPUCS
- O -
SENSE
^
-------
O D ( 3 1 s 0 :
O R ( 31 $0 )
7
Page 10
Schematic #312289, Rev. A
Sheet 3 of 7
A2630 SYSTEM SCHEMATICS
PRL20L8B
- O D ( 31:0)
- <□ R ( 31:0 )
_R E G R E S E T ( Z >
D C 3 1 : Q ) O
_C S R UT 0
MEG4
DS
R W
BOSS
_CPU RE SE T
RUT G
,JRS
^_CSAUT0
ON BO A R D
CSR OM
ME ML O C K
R8 K M0 D E
RBR
TR I ST AT E
CN300
_!§/
vcc
T_
VCC
X .
CN301
V_
Sl_
V_
V_
V.
Nl_
V_
V.
Vo
\ll_
\l2_
d _
VL_
Vi_
Vz_
ViL_
\t9
Vo
v _
\?2
Vl_
V<_
Vs
\gs_
-07
-09
-01 1
-0 1 5
-0 1 7
-0 1 9
-021
-0 2 3
-0 2 5
-0 2 7
-0 2 9
-031
-0 3 3
-0 3 5
-0 3 7
-0 3 9
-0 4 1
-0 4 3
-0 4 5
-0 4 7
-0 49
-0 5 1
-0 53
-0 55
-0 57
1!L
-06 1
063
J f
8 0
10O
120-
160 -
180—
20 0—
220-
2 4 0 -
260 -
28 0 -
3 0 0 -
320-
3 4 0-
36 0 -
380 -
400 -
420 -
440-
460-
480-
50 0
5 2 0
540-
5 6 0
5 8 0
60 0
6 2 0
6 4 0
-< □ CPU CL K
- O E X T S E L
- O _ D S R CK 0
- 0 _ D S R C K 1
- E > _ S T E R M
- 0 _ C B R C K
- 0 _ B E R R
- < □ - N O RR M
- < □ _ G R ES E T
- C - E C S
- < □ _ d b e n
- < d - D S
- < □ R - w
- < □ S1Z0
-<□ siz i
- < □ _ B G R C K
- < □ ECO
-<□ EC 1
- < □ EC2
-< □ -CBR E Q
- < □ - E X T E R N
- < □ -I R E F R EQ
- < □ _ C P UC L K
fit 31 :0 J O
r { > - 2
1 l /4F04
— U307
8
Page 11
Schematic #312289, Rev. A
Sheet 4 of 7
A2630 SYSTEM SCHEMATICS
U4Q«
POWER
pfc-i
U4C4
POWER
L^J
g l
S^p3uF
s i
Jip33uF
pfe-]
U401
POWER
L^J
P K
U40B
POWER
L^J
C401
a—
2Ep"33uF
BYTEO BYTE 1 BYTE2 BYTE3
vcc
s i
PSP
U402
POWER
2ip33uF
C
T)
iJ£J
F3 f
s i
U4G0
POWER
oip33uF
5 :
U409
POWER
X
U407
POWER
z fc
s l
u*ip33uF
s l
oTp33uF
i4 h
U418
POWER
U42Q
POWER
5 F
p^p
U417
POWER
L^J
pfcn
U421
POWER
IJ£J
rJ»“I
U41#
POWER
psp
U422
POWER
I X
p in
U419
POWER
X
U42S
POWER
L^J
r^ h
U4oo
POWER
X
r ^ i
U412
POWER
_ X
C4Q8
P E —
o [T33uF
1
p in
s l
U409
POWER
c
2E|T33uF
J"
X
pi*-]
' - 1 "
U413
POWER
oE|T33uF
_E_
psp
U418
POWER
X
ps=
U414
POWER
2 1
S~Pj733uF
....
p x
oip33uF
p i n
U41 1
POWER
LJ?J
p4*n
U41B
POWER
X _
7 1
oTp33uF
2 X '
o „|. 3 3u F
psp
U424
POWER
X
psp
U428
POWER
3 :
pfc-i
U426
POWER
t x
U429
POWER
psp
U428
POWER
P S
U43fl
POWER
X
p it -
U427
POWER
x _
U431
POWER
ta t
9
Page 12
Schematic #312289, Rev. A
Sheet 5 of 7
A2630 SYSTEM SCHEMATICS
fi( 3 1 : 0 ) 0
CYCEND[
_DSEN,
_B 0 SS .
SIZQI
SIZ1 .
TRI STATE
R W.
.ONBORRDL
_NEMSEL
_DSRCK0.
_RBG RCK,
RSEN
_E7TERN[
. G R E S E T O
.N E M L G C K O
_ R S O
_ R S DE L R Y O
S C L K O
DTRCK[
FDTRCK,
JTN30RRD
RRW
.EXTE RN
D S C L K O
\
0( 31*0 ) 0
VCC
PRL20L8R
~ S
~ F
T
~ f
$
"T F
"T T
T F
T T
“2F
IG IOG
11 101
12 102
13 103
14 104
15 105
16 106
17 107
18
19 ^
11 0 cd
111 L?
112 13
r 13
15
16
1 i
Id
19
20
_LDS
RRS
>FRW
>_UDS
BGRCK
B o s s r>
~ R_WC>-
PRL16L8R
VCC
- O _ 0 V R
R502
R8R.
BGRCK
u sr c k i ;
IEXTERN
RS
o nb o ar d:
_RRSl
1
T
T
T
~F
“ F
~ T
~F
F
T T
10 100
11 101
12 102
13 103
14 104
15 105
16 00
17
01
18
19
U50G
I T
12 .
L6_
L5_
13
____
1 2
1 9
- 0 _ DT R C K
. N E M S E L O
_ B G O
O . S 7MDIS
74S05
1 1
IG I OR*
11 I OB*
12 Q0*
13 Q1 *
14 Q2*
15 Q3*
16 IOC*
17 I OD*
OE*
CLK*
U505
T B T T l KEN— ^
n r
14
1 3
TTI
-----------------
CYCEND
>F_7MDIS
~ W
_DSRCKDIS
_ R E S E T O
E
B20G0
_DTRCK
JMODE.
_RBGl
RR3.
_R R L T .
6SKM0DEL
_ 7 M O -
R5G1
> RDGEH
>"RD0EL
>HDDIR
>DRSEL
74SG5
R5G0
6
0>
1
U3G0
74FG4
-t>_C PUEESET
- 0 _ G R E S E T
- O .B R
U307
74F7 4
12
7f l [ >
0 Q
0-
9 2
D S Q
Q_
|1
>CLK
>CLK
QC
d_Q
l
CLR
” 1
Q
y
1)502
VCC
74F 74
5
74S0 5
U5G2
— ^J>3-
u39G
-0 _ R 3 C
- O . D S R C K l
PRL16RSR
1 1
1 0 I OR*
11 108*
12 QQ*
13 Q l *
14 02*
15 0 3*
16 Q4*
17 0 5*
OE *
CLK *
U504
19
T T
T T
T T
T T
lb
T T
1.8
B
B05S
ZREGRESEl
PPL 16R6R
B2000
TRISTRTE
v p r O -
7 M O
1 1
n r
_L
IG K R*
I 1
103*
12 QG*
13
01*
14
Q2*
15 Q3*
16
04*
17 05*
OE*
CL!
K *
U5GE
19
T T
T T
TT"
T T
16
17
18
VCC
VCC
-yfer 'io F r~vfc"| ^ 1
I 'C r' .rt CD II C il I m
U5O0
POWER
o r.o
. 22uF
U501 i CD
POWER ^
C-NP I
. 22u F
vn
U502
POWER
GNO
. 22uF
VcC
US.3 3
POWER
C-i’.D
J T 2 2 u F
L b il d
T 47uF
16V
C P U C L K O -
VIC
!
in 1
VCC
CD
VIC
| r -
_
[
U504
CD
U505
CD
U506
CD
U537
1 CD
POWER
cso
UD
CJ
. 22uF
POWER
C-NO
in
CJ
. 22u F
POWER
GH0
LO
--
(_>
• 22uF
POWER
GN0
| T
______
r _
_ J !_ z e :
__
c
. 22uF
" 1
10
Page 13
Schematic #312289, Rev. A
Sheet 6 of 7
A2630 SYSTEM SCHEMATICS
DELAYLINE
_L
_RS
_A AS
_BGACK
_EXTERN
_MEMSEL
_REF ACK
_REFRAS
_dm aw ai t;
- 0 _ A S D E L A Y
PAL2QR4D
~ Y
_BGACK
_
A S t
R ASP-
_MEMSEL[
. ir e f r e qO -
x p u c l k O -
JLQ.
1 1
2 3
13
1
IG 10A*
I I
12
13
M
15
I OB*
QQ*
Ql*
Q2*
Q3*
16 I OCm
17 I OD*
18
19
I IQ
111 g
OE*
CLK*
CRYSTAL
3
OUT
74 F2 4 4
U2G2
R 2 0 1
- W —
68
£ c
21
_ERR5
T0
1 9
TB
1 7
16
15
— o
_R ASP
2
1 A 1
1 Y 1
4
1 A2
1 Y2
6
1 A3
1Y3
8
1 A4
1 Y4
1)
2A1
2Y1
13
2A2
2Y2
15
2A3
2Y3
n
2A4
»—i CvJ
LULU
o o
1 1
2Y4
_R0EF
_DSRCKDLY
^CHARGE
DELAYLINE
12
Y
U6Q6
VCC
PAL16L8B
IQ OG
I 1
01
12 02
13 03
14 04
15 05
16
06
17
07
OE*
CLK*
U60 1
19
TTT
TT
TE~
T5“
TT"
13
12
WANT
"REFRRS
"REFCAS
"REFHOLD
REFRCK
_DELCAS
T 1
IN
T 2 NC2
T 3 NC3
T 4 NC5
T5
U604
_BRAS
-----
a a -
R6 0 QV 47
VMR
>1TF CO
"RFC 1
>AFC2
>CPUCLK
B
RASG
IR '
”RAS1
-<Z3TR I STATE
- O mux
74 LS 1 3 8
R ( 3110 )
3A
R
H BA N K g^
U602
YC^
Yl^
Y2^
Y3^
Y4^-
Y5^
Y6>
a:cd Y7Y?
■*—* CSI CSI ^
r e f a c k :
:me ms ell
TJXJ
PAL16L8B
VCC
_REF CAS
_REFH0LD
SI Z0
SIZ1
_BGACK
_UDS
_LDS
_DS
_MEMSEL
T
T T
“ ■VCC ■
U600
POWER
GNO
I**
,22uF
U601
POWER
GNO
♦ 2 2 uF
VcC
U602
POWER
GND
,22 u F
U604
POWER
GND
* 2 2 uF
VCC“
U605
POWER
GND
. 22u F
~vtr~
U606
POWER
GND
. 2 2 u F
IG
I0Q
I 1
101
12
102
13
103
14
104
15
105
16
00
17 01
18
19
U6Q3
L8_
Y
-<C]R( 31*0)
1 5
_________
1 4
1 3
1 2
19
______________
]RJ4
EMR WR IT
"CAS0
~C AS 1
"CAS2
"CAS3
11
Page 14
Schematic #312289, Rev. A
Sheet 7 of 7
A2630 SYSTEM SCHEMATICS
_BGRCKO-
_B 0 SS O-
2
3
4
6
6
7
8
£
9
/TT
/Z
£
A
7
2
3
/«
4
/ 6
6
A
8
A
A 7
/1
8
9
/a
/
74LS 2 45
R 1 B 1
R2
R3 U705 BE
R4
R5
R6 ^
R7 £
fll
R2 B2
R3 BE
R4 U706 B4
R5
R6
R7 £
R1
R2
R 3 117(77
R5
R6
R7 £
QQCd |
n° —CD
O |
a |
u /u /
CD 1
B2
B4
BE
BE
B^
BE
B 1
BE
BE
B"
BE
B7
BE
74L S245
74LS245
18
B1
17
B2
16
B3
16
B/j
14
B5
13
B6
12
11
✓ T
22/
&
&
15/
_ 12/
U /
_ie/
_2/
I
( / £
/28
/s:
/22
/ 2a”
/7Z
Rfl(23«0)
74 LS646
ni b 1
R2 U701 B2
R3
R4
>CRB
CBR
R5 B
R6 B
R7 B
R8 iL B
cc icQcr
—-C^CCOD
CD | CO CO
37
74 LS64S
R1 B
R2 ||«inn B,
R3 U7Q2 B:
R4
->CRB
■ >CBR
R5 E
R6 B
R7 E
R8 £ E
cn |aDcr
— CD cron
CD |o d co
3P
19 n \
17 tzN
16 It
~ 5 >
7 E ^
nN
<£>
CN70O
N
VCC
^ - R 7 M
CDflC
_C1
B2UO0
S7MDIS
5_7MDIS
MUX
R7M
PRL16L8B
0>DSCL K
R( 31 * 0 ) 0
Vl _
I
v«
Vi
Vi
\J2_
V l§_
V ll_
\ 15
\ 16
<ZI_B0SS
<HflFC0
<DR FC1
<ZDRFC2
VCC
- U700
& -
06
D5
D4
>CLK
03
D2
01
74 LS174
QE —
QE
Q 4
Q2-1-
Q 1
_
1PLC 2:0 )
Vil_
FU31 J 0 ) O -
d r s e l E
_BERR<>
_RD0E HO -
RDD IR O -
_RD0ELtZ>-
D(31 J0) O -
vcc
<R'
1K>
R7Q0
74S05.
o < J
U300
------
74F04
^o<^-
U307
74 LS245
R 1 B 1
R2
£
R3 U703 BE
R4 B4
R5
R6
R7 £
£
%
£
/a 9
/
CD |
74 LS245
R 1 B 1
R2 B2
R3 U704 BE
R4 B4
R5
R6
R7 £
08
CD |
B2
16 12\
14 11\
BE
BE
B"
BE
17 e\
16 s\
16 4 \
B5-.y—
BE
BE
12 l \
B"
B£-“
__
BE
in s
~Tq\
Z§ \
Vi
Vi
Ss
tvS:
X 23
VMR
0 _ R E S E T
0> _ HR L T
0 _ R B R
C710
330PF~p
E i T
“VI
U7O0
POWER
j|L
~|72 2uF
ih sJ L " "
“VT
U701
POWER
ONO
JC
.22uF
fen
“VI
U702
POWER
ONO
VCC
22uF
U!
0 _ R BGR C K
0 _ R B G
O_0Tf lCK
c7 i_ iiir
.iJE p
U703
POWER
ONO
H 7 22 uF
S - l- r V IS-IT
CD
U704
POWER
u "T722uF
ONO
U70B
POWER
ONO
. 22uF
O R R W
0 _ L D S
O _ U 0 S
0 _ R R S
\
R D ( 15 t 0 )
C7123 ± n f e h s l l
1 0 u F^ P POWER u L??.,F POWER o “T7 (
16V-| Lo|sJ -|* 1
C713_3+ C71il_ C71_§L C71§]_ C 7 n L C718J + C709_
U706
POWER
ONO
330PF
U707
POWER
ONO
.luF
3 T ”
F722uF
330PF _
r a r“VI
U708
POWER
ONO
TV
.luF
u V 2 2 u F
10uF
16V
-10uF
16V
12
Page 15
COMPUTERS
Computer Systems Division
1200 Wilson Drive
West Chester, PA 19380
Page 16
This was brought to you
from the archives of
http://retro-commodore.eu
Loading...