Amiga 3000


A3000 RomTower

KICKSTARTS:
1.4 or the 'Boot ROMs' looked for a file called devs:kickstart to boot up
2.04 available in ROM and as a kickstart file. All 3000's were to come with either one of these.
3.1 This is available as an upgrade

ROM chips are a pair of 40 pin DIPs.

CPU:
68030 at 25MHz or
68030 at 16MHz

FPU:
68882 at 25MHz
68881 at 16MHz for 16MHz machine

CHIPS:(ECS)
Denise - 8373 SuperDenise
Paula - Standard Paula
Agnus - 8372B or 8375 Agnus for 2 meg CHIP RAM
Gary - Fat Gary
Amber - De-interlacing chip to provide 31KHz video
Buster - SuperBuster -07, -09 and -11
DMAC - SuperDMAC -02, -04
Ramsey - Ramsey -04 and -07

RAM:
CHIP RAM Uses 44256 DRAM DIPs for up to 2 megabytes
FAST RAM uses 1x4 Static Column OR Page Mode ZIP DRAM for up to 16 Megabytes
or
FAST RAM uses 256x4 Static Column OR Page Mode ZIP DRAM up to 4 Megabytes
or
FAST RAM uses 44256 DRAM DIPs for 1 Megabyte of FAST RAM. May not be used in conjuction with ZIPs.

PORTS:
15KHz Video
31KHz Video
External Disk drive
Parallel Port
External SCSI Connector
Serial Port
Mouse/Joystick ports
5-pin DIN Keyboard Port
Left and Right RCA Audio

SLOTS:
1 Video Slot. In line with ZorroIII slot
1 xxx pin CPU slot
4 ZorroII/III 16/32-bit Expansion slots
2 16-bit ISA slots (for use with BridgeBoard Devices) inline with ZorroIII slots

MOTHERBOARD REVISIONS:
7.x Used a ROM tower to hold the ROMs
8.x ?? 9.x Eliminated use of a ROM tower
Also has labels on the motherboard for jumpers

A3000 Motherboard


o 1 RCA Stereo Jacks
o 2 VDE selector switch
o 3 Video finetune adjustment
o 4 VGA connector
o 5 Amiga Video connector
o 6 SCSI & Parallel port
o 7 External Floppy
o 8 Serial port
o 9 Amber gate array
o 10 System expantion bus
o 11 Super DMAC gate array DMA controller for SCSI
o 12 System ROM
o 13 Paula Audio I/O
o 14 Denise Enhansed 1280 hires
o 15 Fat Agnus
o 16 Fat Gary gate array system address decoding
o 17 Fast RAM
o 18 Chip RAM
o 19 FAT Buster gate array DMA Arbitrary for motherboard
o 20 MC68030 microprocessor 16/25 Mhz
o 21 MC68881/82 Math coprocessor
o 22 Ramsey gate array Dynamic-static RAM controller
o 23 Fast RAM (DIP)
o 24 Fast processor slot
o 25 Mouse/joy
o 26 mouse/joy
o 27 Keyboard
o 29 System power 135 Watt power supply

Amiga 3000/3000T Jumper Settings


Jumper  Pins    -01 -02 -03 -04     Function
----------------------------------------------------------------------------

J100    4       2-3 2-3 1-2 1-2     Quadrature Clock Phasing
J101    3       2-3 2-3 2-3 2-3     FPU Clock Source
J102    3       2-3 2-3 2-3 2-3     System Clock Source
J103    4       3-4 3-4 3-4 3-4     FPU CS/BERR
J104    3       1-2 1-2 1-2 1-2     CPU Clock Source
J151    3       2-3 2-3 1-2 1-2     ROM Timing
J152    3       2-3 2-3 1-2 1-2     ROM Timing
J180    3       2-3 2-3 2-3 2-3     A2000 ROM Compatibility Jumpers
J181    3       2-3 2-3 2-3 2-3     A2000 ROM Compatibility Jumpers
J200    3       1-2 2-3 1-2 2-3     NTSC/PAL Select
J350    3       1-2 1-2 1-2 1-2     Tick Clock Source
J351    3       2-3 2-3 2-3 2-3     Disable DF1: (1-2 to enable)
J352    3       2-3 2-3 2-3 2-3     Light Pen Source
J481    3       2-3 2-3 2-3 2-3     VDE Scan Double Only Jumper
J482    3       1-2 1-2 1-2 1-2     VDE PLL Loop Adjust
J483    3        -   -   -   -      VDE Factory Test Points
J800    3       1-2 1-2 1-2 1-2     WD33C93
J851    3       1-2 1-2 2-3 2-3     RAM Controller Speed Jumper
J852    5       4-5 4-5 4-5 4-5     -012A Ramsey only (See Notes)
J853    3       2-3 2-3 2-3 2-3     -012A Ramsey only (See Notes)

J852 connecting pins 2 & 3 : 1Mbit, in 256k x 4
J852 connecting pins 1 & 2 : 4Mbit, in 1m x 4


Notes:

    J150, J151:     ROM Timing.
        The ROM timing circuit provides four different speed settings to
        match the output enable and access timing of the system ROMs.

        To set the jumpers, determine the output enable time and access
        times for the ROMs you wish to use.  The ROM must have lower values
        than for the setting you select.

        System standard ROMs have T(oe) = 110ns and T(acc) = 250ns.

        CLK     J151    J150    T(oe)(min.) T(acc)(min.)

        16 MHz   2-3     2-3     157ns       250ns
        16 MHz   2-3     1-2     220ns       312ns
        16 MHz   1-2     2-3     282ns       375ns
        16 MHz   1-2     1-2     345ns       437ns

        25 MHz   2-3     2-3     90ns        160ns
        25 MHz   2-3     1-2     130ns       200ns
        25 MHz   1-2     2-3     170ns       240ns
        25 MHz   1-2     1-2     210ns       280ns

    J180, J181:     ROM Compatibility Jumpers

                            J180    J181

        A2000/A500 ROMS:    1-2     1-2
        A3000 ROMs:         2-3     2-3

    J851-J853:      RAM Controller Compatibility Settings

                                        J852    J853

        -012A Ramsey w/ 256K4 RAMs     4-5     2-3
        Later Ramseys w/ 256K4 RAMs    2-3     1-2
        Later Ramseys w/ 1M4 RAMs      1-2     1-2

The A3000 also has NVRAM configuration which is powered by the same battery as the clock. It supports the following:-

SCSI Controller ID:
You can configure the SCSI controller ID to whatever ID you want, the default however is 7.
You can set the length of time that the SCSI timesout, increases this may prevent slowboot drives which haven't spun up yet from not being detected.
Synchronous SCSI mode, this may speed up many driver operations, but may also be incompatible with some drives
You can turn on or off Multiple LUNs.

The A3000 has a DMA SCSI chipset based on the WDC33C93 Chipset and has a 50pin connector internally and a 25pin connector externally. A3000 Fast Slot Pins

Pin number Signal name


1 /DSACK1
2 GND
3 GND
4 /HALT
5 R/W
6 GND
7 GND
8 /BGACK
9 /SBR
10 GND
11 GND
12 /AVEC
13 EXT90
14 VCC
15 VCC
16 /RAMSLOT
17 /BOSS
18 VCC
19 VCC
20 FC0
21 /STERM
22 VCC
23 VCC
24 FC1
25 /BR
26 VCC
27 VCC
28 /CBACK
29 /BERR
30 DIS_CLKS *
31 /EMUL
32 /CBREQ
33 A8
34 ECLK30 *
35 GND
36 A0
37 A9
38 GND
39 GND
40 A1
41 A10
42 ECLK90A *
43 /INT6 +
Pin number Signal name
44 A2
45 A11
46 ECLK90
47 GND
48 A3
49 A12
50 GND
51 GND
52 A4
53 A13
54 ECPUCLKB *
55 /WAIT
56 A5
57 A14
58 ECPUCLKA *
59 GND
60 A6
61 A15
62 GND
63 GND
64 A7
65 A16
66 reserved
67 /CI2P +
68 A24
69 A17
70 reserved
71 GND
72 A25
73 A18
74 GND
75 GND
76 A26
77 A19
78 DIS_CLK30 *
79 /PI2C +
80 A27
81 A20
82 reserved
83 GND
84 A28
85 A21
86 GND
87 GND
88 A29
89 A22
90 reserved
91 /DSACK0
92 A30
93 A23
94 VCC
95 VCC
96 A31
97 /DS
98 VCC
99 VCC
100 /ECS
101 /CIOUT
102 VCC
103 VCC
104 /DBEN
105 /BG
106 VCC
107 VCC
108 /RMC
109 /CPURST
110 /FPURST
111 reserved
112 EXTCPU
113 /EBCLR
114 /SENSEZ3P +
115 GND
116 /IPEND
117 /RESET
118 GND
119 GND
120 /IPL0
121 SIZ0
122 GND
123 GND
124 /IPL1
125 FC2
126 CLK90
127 reserved
128 /IPL2
129 SIZ1
130 GND
131 GND
132 /CIIN
133 /AS
134 /FPUCS
135 CPUCLKA
136 /OCS
137 D31
138 GND
139 GND
140 D15
141 D30
142 GND
143 GND
144 D14
145 D29
146 reserved
147 /CBR
148 D13
149 D28
150 reserved
151 GND
152 D12
153 D27
154 GND
155 GND
156 D11
157 D26
158 reserved
159 /BG30
160 D10
161 D25
162 reserved
163 GND
164 D9
165 D24
166 GND
167 GND
168 D8
169 D16
170 reserved
171 reserved
172 D0
173 D17
174 VCC
175 VCC
176 D1
177 D18
178 VCC
179 VCC
180 D2
181 D19
182 VCC
183 VCC
184 D3
185 D20
186 VCC
187 VCC
188 D4
189 D21
190 GND
191 GND
192 D5
193 D22
194 GND
195 GND
196 D6
197 D23
198 GND
199 GND
200 D7

Thanks to Rick Harris, Ron Mascaro and Greg Scott (National Amiga)