Editing Amiga 600 (section)

==Technical information==
The A600 shipped with a [[Motorola 68000]] CPU, running at 7.09&nbsp;MHz ([[PAL]]) or 7.16&nbsp;MHz ([[NTSC]]) and 1 MB [[Amiga Chip RAM|"chip" RAM]] with 80&nbsp;ns access time.<ref name="a600_schematics">{{citation|url=http://amiga-manuals.xiik.net/schematics/A600%20-%20Service%20Manual-ENG.rar |title=A600 System Schematics |publisher=Commodore Electronics Limited |date=April 1992 |url-status=dead |archive-url=https://web.archive.org/web/20120331155139/http://amiga-manuals.xiik.net/schematics/A600%20-%20Service%20Manual-ENG.rar |archive-date=2012-03-31 }}</ref><ref>{{cite web|title=A600 DRAM type and speed|url=http://www.amiga-stuff.com/hardware/256kx16-dram.html}}</ref>

===Graphics and sound===
The A600 is the last Amiga model to use Commodore's [[Amiga Enhanced Chip Set|Enhanced Chip Set]] (ECS), which can address 2&nbsp;MB of [[Amiga Chip RAM]] and adds higher resolution display modes. The so-called [[MOS Technology Agnus|Super Agnus]] display chip can drive screen modes varying from 320×200 pixels to 1280×512 pixels, with different [[Horizontal scan rate|frequency sync]]. As with the original Amiga chipset, up to 32 colors can be displayed from a 12-bit (4096 color) palette at lower display resolutions. An [[Amiga Halfbrite mode|extra-half-bright]] mode offers 64 simultaneous colors by allowing each of the 32 colors in the palette to be dimmed to half brightness. Additionally, a 4096-color "[[Hold-And-Modify|HAM]]" mode can be used at lower resolutions. At higher resolutions, such as 800×600i, only 4 simultaneous colors can be displayed.

Sound was unchanged from the original Amiga design, namely, 4 [[direct memory access|DMA]]-driven 8-bit channels, with two channels for the left speaker and two for the right.

The A600 was the first Amiga model since the original Amiga 1000 with built-in color composite video (RCA), which allowed the A600 to be used with a standard CRT television without the need for a [[Amiga video connector|Commodore A520 RF Modulator]] adaptor.

===Peripherals and expansion===
{{Multiple image
| total_width       = 300
| align             = right
| direction         = vertical
| header            = Right and rear ports and slots<ref name=ACCA/>
| image1            = Commodore Amiga 600 right side (cropped).png
| caption1          = Right side of the Amiga 600, with its three LED lights, two [[Atari joystick port]]s, and one floppy drive.
| image2            = Commodore Amiga 600 back (cropped).png
| caption2          = Rear panel. From left to right: an external floppy disk drive connector, a serial port, a parallel port, a pair of stereo audio ports, a port for video output, one for color composite video output, an RF modulator port, and a power socket.
}}

The A600 features Amiga-specific connectors including two [[D-subminiature|DB9M]] ports for [[joystick]]s, [[mouse (computing)|mice]], and [[light pen]]s, a standard 25-pin [[RS-232]] [[serial port]] and a 25-pin [[Centronics]] [[parallel port]]. As a result, the A600 is compatible with many peripherals available for earlier Amiga models, such as [[MIDI]], [[sampling (signal processing)|sound samplers]] and video-capture devices.

Expansion capabilities new to the Amiga line were the [[PC Card|PCMCIA]] Type II slot and the internal 44-pin ATA interface both most commonly seen on [[laptop]] computers. Both interfaces are controlled by the '[[Amiga custom chips#Gayle|Gayle]]' custom chip. The A600 has internal housing for one 2.5" internal hard disk drive connecting to the ATA controller.<ref name="a600_schematics"/>

The A600 is the first of only two Amiga models to feature a PCMCIA Type II interface. This connector allows use of a number of compatible peripherals available for the laptop-computer market, although only 16-bit PCMCIA cards are hardware-compatible; newer 32-bit PC Card (CardBus) peripherals are incompatible. Mechanically, only Type I and Type II cards fit in the slot; thicker Type III cards will not fit (although they may connect if the A600 is removed from its original case). The port is also not fully compliant with the PCMCIA Type II standard as the A600 was developed before the standard was finalized. The PCMCIA implementation on the A600 is almost identical to the one featured on a later Amiga, the [[Amiga 1200|1200]]. A number of Amiga peripherals were released by third-party developers for this connector including SRAM cards, [[CD-ROM]] controllers, [[SCSI]] controllers, network cards, [[sampling (signal processing)|sound samplers]], and video-capture devices. Although PCMCIA was similar in spirit to Commodore's expansion architecture for its [[Commodore 64|earlier systems]], the intended capability for convenient external expansion through this connector was largely unrealized at the time of release because of the prohibitive expense of PCMCIA peripherals for a lower-budget personal computer.<ref>{{cite web|title=The Extreme Amiga 600 Upgrading Page - What the hell is an Amiga 600?|url= http://www.amiga600.de/whatisamiga600.htm}}</ref> Later, a number of compatible laptop-computer peripherals have been made to operate with the A600, including network cards (both wired and wireless), serial modems and [[CompactFlash]] adapters.

===Operating system===
The A600 shipped with [[AmigaOS]] 2.0, consisting of [[Workbench (AmigaOS)|Workbench]] 2.0 and a [[Kickstart (Amiga)|Kickstart]] ROM revision 37.299, 37.300 or 37.350 (Commodore's internal revision numbers). Confusingly, all three ROM revisions were officially designated as version "2.05". Some early A600s shipped with Kickstart 37.299, which had neither support for the internal ATA controller, nor for the PCMCIA interface. Although it is possible to load the necessary drivers from floppy disk, it is not possible to boot directly from ATA or PCMCIA devices. Models fitted with Kickstart 37.300 or 37.350 can utilize those devices at boot time. Version 37.350 improved compatibility with ATA hard disks by increasing the wait time for disks to spin up during boot.

===Specifications===
[[Image:A600 caseremoved.jpg|thumb|250px|A600 with part of the case removed, showing the motherboard and floppy disk drive]]
{| class="wikitable"
! Attribute
! Specification<ref name="a600_schematics"/>
|-
|[[Central processing unit|Processor]]
|[[Motorola 68000]] at 7.16&nbsp;MHz ([[NTSC]]) or 7.09&nbsp;MHz ([[PAL]])
|-
|[[Random-access memory|RAM]]
|
1&nbsp;[[Megabyte|MB]] [[Amiga Chip RAM]] with 80 ns access time; upgradeable by further 1&nbsp;MB in "trapdoor" expansion slot<br/>
Up to 4&nbsp;MB in [[PC card|PCMCIA]] slot<br/>
Up to 64&nbsp;MB with unofficial expansions,<ref name="aca630"/> 64/128MB with Vampire/v2 600<ref name="Vampire"/> and 512Mb with the A600 Apollo Manticore.<ref name=":0" />
|-
|[[Read-only memory|ROM]]
|512&nbsp;[[kilobyte|KB]] [[Kickstart (Amiga)|Kickstart]] ROM or 1&nbsp;MB with unofficial expansions
|-
|Chipset
|[[Amiga Enhanced Chip Set|Enhanced Chip Set]] (ECS)
|-
|Video
|12-bit color palette (4096 colors)<br/>
Graphic modes from:
*320×200 to 320×512[[interlaced|i]] with 32, 64 ([[Amiga Halfbrite mode|EHB]] mode) or 4096 ([[Hold-and-Modify|HAM]] mode) on-screen colors
*640×200 to 640×512i with 16 on-screen colors
*1280×200 to 1280×512i, 640×480[[progressive scan|p]]60 (VGA) with 4 on-screen colors
|-
|Audio
|4 × 8-bit [[PCM]] channels (2 [[Stereophonic sound|stereo]] channels)<br/>
28–56&nbsp;kHz maximum [[Direct memory access|DMA]] [[sampling rate]] (dependent on video mode in use)<br/>
70&nbsp;dB [[Signal-to-noise ratio|S/N ratio]]
|-
|Removable storage
|3.5" [[Double density|DD]] [[floppy disk]] drive (880&nbsp;KB capacity)
|-
|Internal Storage
|20 or 40&nbsp;MB 2.5" hard disk drive (A600HD model only)
|-
|Audio/video out
|Analog RGB video out ([[D-subminiature|DB-23M]])<br/>
Colour Composite video out ([[RCA connector|RCA]])<br/>
[[RF connector|RF]] audio/video out (RCA)<br/>
Audio out (2 × RCA)
|-
|Input/output ports
|2 × Mouse/Gamepad ports ([[D-subminiature|DE9]])<br/>
[[RS-232]] [[serial port]] (DB-25M)<br/>
Centronics style [[parallel port]] (DB-25F)<br/>
[[Floppy disk]] drive port (DB-23F)<br/>
44-pin ATA controller (internal)<br/>
16-bit Type II PCMCIA slot
|-
|Expansion slots
|80-pin expansion slot for 1&nbsp;MB RAM upgrade (may include a [[Real-time clock|RTC]])
|-
|[[Operating system]]
|[[AmigaOS]] 2.0 ([[Workbench (AmigaOS)|Workbench]] 2.05 and [[Kickstart (Amiga)|Kickstart]] 2.05)
[[AmigaOS]] 3.1 and 3.2 (the latter requiring 2 MB RAM or more) with [[Kickstart (Amiga)|Kickstart]] 3.1 or 3.2 replacement respectively and 3.5/3.9 with [[Motorola 68020|68020]] CPU upgrade
|-
|Physical dimensions
|350 × 240 ×75&nbsp;mm (W × D × H)
|-
|Other
|Integrated keyboard with 78 keys (without numeric keypad)
|}