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interrogates each expansion device in turn and assigns address space or resources as needed. For example, in the case of a memory card, the OS can dynamically add the memory to the system. Through
Autoconfig the OS can access firmware on expansion devices, for example, to boot from a disk connected
159:) such as manufacturer ID, product ID, and the amount of address space the device requires. The CPU then writes a base memory address to the device (or tells it to "shut up" if for some reason it can't be configured), and the device asserts /CFGOUT.
220:
The Amiga 2000 can accommodate five Zorro expansion cards, such as, RAM expansions, SCSI controllers and graphic cards. However the standard does not put a limit on the number of devices. In the A2000, two Zorro II slots are aligned with
247:
systems. From the A3000 design onwards, it was deemed desirable for all enumerable hardware expansions to use
Autoconfig. It is OS-legal for non-Autoconfig hardware to be completely ignored and the standard was adopted in AmigaOS 3.1.
173:, connecting the /CFGOUT of one slot directly to the /CFGIN of the next would create the problem that an unoccupied slot would break the configuration chain. To solve this, the backplane
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the /CFGIN and /CFGOUT signals to form the /CFGIN for the next slot (/CFGOUT is pulled low if undriven), which allows empty slots to be bypassed. This requires one
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bus. Autoconfig requires the 68000 data and address bus to be available to all devices on the bus. In theory, a virtual address system, as used in
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slots. The Zorro bus and ISA bus can be connected by means of a "bridgeboard", such as, the Janus
Hardware Emulator, which allows emulation of
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The /CFGIN of the first device is tied to ground. The second device's /CFGIN is controlled by the first device's /CFGOUT, and so on.
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computers which is intended to automatically assign resources to expansion devices without the need for
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Expansion devices respond to certain fixed memory addresses starting at hexadecimal
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was first used in the Amiga 2000, though a similar expansion bus is present on the
20:
147:) if the /CFGIN signal is asserted and the device is not already configured. The
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expansion bus specification for configuring expansion devices in Amiga systems.
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314:. Amiga Technical Reference Series (Third ed.). Addison-Wesley.
152:
710:
545:
233:
229:
226:
210:
96:
518:
25:
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Amiga system for automatically setting up hardware peripherals
337:"What Is ACPI (Advanced Configuration and Power Interface)?"
209:. Zorro II is a relatively straightforward extension of the
239:
Zorro III is the 32 bit auto-configuring expansion bus of
408:
Commodore Amiga A500/A2000 Technical
Reference Manual
181:(quad OR gate) on the Amiga 2000, which is the only
155:
of configuration information (usually supplied by a
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217:, would require a minor revision to Autoconfig.
379:"K / AUTOCONFIG(TM) / The Autoconfig Mechanism"
530:
482:, Commodore-Amiga, Inc., 1987, archived from
8:
114:Autoconfig is integrated within the Amiga's
268:, whereas in later documents it was styled
256:In early Commodore documents it was styled
189:Hardware specifications and bus connections
537:
523:
515:
788:Amiga Advanced Architecture chipset (AAA)
76:Learn how and when to remove this message
476:Introduction to the Commodore Amiga 2000
436:
434:
39:This article includes a list of general
510:Amiga Hardware Manufacturer ID Registry
414:, Commodore-Amiga, Inc., archived from
358:"The Amiga Museum » Kickstart 1.2"
297:
448:. Commodore-Amiga, Inc. Archived from
7:
783:Advanced Graphics Architecture (AGA)
122:. When the system is switched on,
45:it lacks sufficient corresponding
14:
443:"The Zorro III Bus Specification"
185:hardware required by Autoconfig.
282:
30:
311:Amiga Hardware Reference Manual
441:Haynie, Dave (20 March 1991).
103:settings. It is analogous to
1:
118:firmware, usually stored in
127:to a hard disk controller.
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193:Autoconfig is part of the
18:
335:To, Acpi (3 July 2020) .
851:other Amiga custom chips
19:Not to be confused with
768:Original Chip Set (OCS)
60:more precise citations.
959:Computer configuration
778:Enhanced Chipset (ECS)
405:Finkel, Steve (1987),
923:Amiga video connector
793:Commodore AA+ Chipset
699:Unofficial PPC models
678:Unofficial 68k models
356:Received, Intuition.
798:Amiga Hombre chipset
169:design such as the
891:3rd Party Hardware
807:Amiga custom chips
258:Auto Configuration
93:auto-configuration
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105:PCI configuration
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877:Extra Half-Brite
740:Amiga prototypes
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56:this article by
47:inline citations
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918:Amiga Zorro III
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872:Hold-And-Modify
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649:AmigaOne models
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455:on 16 July 2012
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52:Please help to
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954:Computer buses
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504:External links
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731:Sam460ex Lite
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721:Sam440ep-flex
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489:on 2012-06-13
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836:Denise (OCS)
661:AmigaOne 500
562:Amiga models
491:, retrieved
484:the original
475:
469:
457:. Retrieved
450:the original
423:, retrieved
416:the original
407:
382:. Retrieved
372:
361:. Retrieved
351:
340:. Retrieved
330:
310:
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290:Amiga portal
269:
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141:0xFF00 0000
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113:
95:protocol of
88:
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72:
63:
44:
21:GNU Autoconf
831:Alice (AGA)
752:Power A5000
262:auto-config
183:motherboard
66:August 2008
58:introducing
938:Categories
841:Lisa (AGA)
493:2011-09-03
459:31 January
425:2011-09-03
384:2021-04-29
377:Pic, The.
363:2021-04-29
342:2021-04-29
306:Miner, Jay
276:References
270:AUTOCONFIG
266:AutoConfig
245:Amiga 4000
241:Amiga 3000
207:Amiga 1000
171:Amiga 2000
89:Autoconfig
41:references
882:Kickstart
548:hardware
236:systems.
199:Zorro III
167:backplane
145:Zorro III
137:0xE8 0000
116:Kickstart
867:Chip RAM
860:Hardware
726:Sam460ex
716:Sam440ep
656:AmigaOne
580:500 Plus
308:(1991).
252:Notation
203:Zorro II
195:Zorro II
131:Protocol
107:through
949:AmigaOS
819:Blitter
706:Pegasos
685:Minimig
552:history
153:nibbles
124:AmigaOS
54:improve
824:Copper
747:Walker
690:Natami
620:3000UX
318:
179:74LS32
151:reads
101:jumper
91:is an
43:, but
944:Amiga
846:Paula
814:Agnus
711:Efika
630:4000T
615:3000T
546:Amiga
487:(PDF)
480:(PDF)
453:(PDF)
446:(PDF)
419:(PDF)
412:(PDF)
234:80386
230:80286
227:Intel
211:68000
165:In a
97:Amiga
640:CDTV
635:CD32
625:4000
610:3000
605:2500
600:2000
595:1500
590:1200
570:1000
461:2010
316:ISBN
243:and
197:and
143:for
139:(or
109:ACPI
585:600
575:500
264:or
232:or
223:ISA
215:PCI
175:ORs
157:PAL
149:CPU
120:ROM
940::
433:^
393:^
272:.
260:,
111:.
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550:(
538:e
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524:v
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366:.
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324:.
79:)
73:(
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64:(
50:.
23:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.