Josh: Removed Category:Macintosh

2026-03-26T20:44:46Z

Removed Category:Macintosh

← Older revision		Revision as of 21:44, 26 March 2026
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	[[Category:Apple Vintage Computers]]		[[Category:Apple Vintage Computers]]
	~~[[Category:Macintosh]]~~
	[[Category:Macintosh Quadra]]		[[Category:Macintosh Quadra]]

Josh: Fix table widths to 70%

2026-02-10T11:16:31Z

Fix table widths to 70%

← Older revision		Revision as of 12:16, 10 February 2026
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	Built-in video with 512 KB VRAM (expandable to 1 MB via VRAM SIMMs):		Built-in video with 512 KB VRAM (expandable to 1 MB via VRAM SIMMs):

	{\| class="wikitable" style="width:60%~~; text-align:center;~~"		{\| class="wikitable" style="width:70%"
	\|+ '''Supported Resolutions'''		\|+ '''Supported Resolutions'''
	\|-		\|-
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	For DOS card-specific issues:		For DOS card-specific issues:

	{\| class="wikitable" style="width:~~100~~%;"		{\| class="wikitable" style="width:70%"
	\|+ '''DOS Card Troubleshooting'''		\|+ '''DOS Card Troubleshooting'''
	\|-		\|-

Josh: Fix infobox image syntax: wrap filename in File:...

2026-02-10T10:32:55Z

Fix infobox image syntax: wrap filename in File:...

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	{{Infobox computer		{{Infobox computer
	\| name = Macintosh Quadra 610 DOS Compatible		\| name = Macintosh Quadra 610 DOS Compatible
	\| image = Macintosh_Quadra_610.jpg		\| image = [[File:Macintosh_Quadra_610.jpg]]
	\| caption = Macintosh Quadra 610 (DOS Compatible variant uses identical case)		\| caption = Macintosh Quadra 610 (DOS Compatible variant uses identical case)
	\| manufacturer = Apple Computer, Inc.		\| manufacturer = Apple Computer, Inc.

Josh: Add product image to infobox

2026-02-10T10:31:09Z

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← Older revision		Revision as of 11:31, 10 February 2026
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	{{Infobox computer		{{Infobox computer
	\| name = Macintosh Quadra 610 DOS Compatible		\| name = Macintosh Quadra 610 DOS Compatible
	\| image =		\| image = Macintosh_Quadra_610.jpg
	\| caption =		\| caption = Macintosh Quadra 610 (DOS Compatible variant uses identical case)
	\| manufacturer = Apple Computer, Inc.		\| manufacturer = Apple Computer, Inc.
	\| type = Personal Computer		\| type = Personal Computer

Josh: Created article for Macintosh Quadra 610 DOS Compatible

2026-02-10T10:23:07Z

Created article for Macintosh Quadra 610 DOS Compatible

New page

{{Infobox computer
| name = Macintosh Quadra 610 DOS Compatible
| image =
| caption =
| manufacturer = Apple Computer, Inc.
| type = Personal Computer
| release_date = February 28, 1994
| discontinued = June 13, 1994
| price = US$2,100
| cpu = Motorola 68040 @ 25 MHz (Mac)<br>Intel 486SX @ 25 MHz (DOS)
| memory = 8 MB RAM (expandable to 68 MB Mac, 32 MB DOS)
| storage = 160 MB or 230 MB SCSI HDD
| display = DB-15 video port, up to 1152×870 @ 8-bit
| sound = 8-bit mono (Mac side only)
| dimensions = 3.4" H × 16.3" W × 15.6" D (8.6 × 41.4 × 39.6 cm)
| weight = 14 lbs (6.4 kg)
| os = System 7.1 – Mac OS 8.1
| predecessor = [[Macintosh Quadra 610]]
| successor = [[Power Macintosh 6100 DOS Compatible]]
| codename = Speedbump 610
| model = M2322LL/A
}}

The '''Macintosh Quadra 610 DOS Compatible''' is a dual-processor personal computer manufactured by Apple Computer and released on February 28, 1994.<ref>{{cite web |url=https://support.apple.com/kb/SP227 |title=Macintosh Quadra 610 DOS Compatible: Technical Specifications |publisher=Apple Inc. |access-date=2026-02-10}}</ref> It combines a Motorola 68040 processor running Mac OS with an Intel 486SX processor on a DOS Compatibility Card (internally codenamed "Houdini"), allowing the machine to run both Macintosh software and DOS/Windows applications.<ref>{{cite web |url=https://en.wikipedia.org/wiki/Macintosh_Quadra_610 |title=Macintosh Quadra 610 |publisher=Wikipedia |access-date=2026-02-10}}</ref>

Apple produced approximately 25,000 units of the Quadra 610 DOS Compatible as a market test.<ref name="byte199504">{{cite web |url=https://archive.org/details/eu_BYTE-1995-04_OCR/page/n212/mode/1up |title=One Box, Two Computers |publisher=Byte Magazine |date=April 1995 |access-date=2026-02-10}}</ref> The product sold out within months of launch, demonstrating sufficient demand for Apple to develop successor products including the [[Power Macintosh 6100]] DOS Compatible.

== DOS Compatibility Card ==

The DOS Compatibility Card occupies the Processor Direct Slot (PDS) and contains:

* Intel 486SX processor running at 25 MHz
* One 72-pin SIMM slot supporting up to 32 MB RAM for DOS operations (80 ns or faster)
* 512 KB dedicated video RAM for DOS display
* PC game port connector

The card allows switching between Mac OS and DOS environments without rebooting. DOS video output is routed through the Mac's display port using a Y-adapter cable, or can be connected to a separate VGA monitor. The DOS card lacks sound capabilities; audio is not available in DOS mode.<ref>{{cite web |url=http://www.edibleapple.com/2009/12/09/blast-from-the-past-a-look-back-at-apples-dos-compatibility-cards/ |title=Blast from the Past: A look back at Apple's DOS Compatibility Cards |publisher=Edible Apple |date=December 9, 2009 |access-date=2026-02-10}}</ref>

== Architecture and Processor ==

=== Mac Side ===

The Macintosh side uses a Motorola 68040 processor at 25 MHz with integrated FPU. Unlike some Quadra 610 configurations which shipped with the 68LC040 (lacking FPU), all DOS Compatible models include the full 68040.<ref name="everymac">{{cite web |url=https://everymac.com/systems/apple/mac_quadra/specs/mac_quadra_610.html |title=Macintosh Quadra 610 (PC) Specs |publisher=EveryMac.com |access-date=2026-02-10}}</ref>

* 32-bit data path
* 25 MHz system bus
* 8 KB L1 cache (integrated in CPU)
* 1 MB ROM

=== DOS Side ===

The Intel 486SX-25 processor on the DOS card provides:

* 32-bit architecture
* 25 MHz clock speed
* No integrated FPU (SX variant)
* Independent RAM via dedicated 72-pin SIMM slot

== Memory and Storage ==

=== RAM Configuration ===

The logic board has 4 MB RAM soldered on-board with two 72-pin SIMM slots. Supported SIMM sizes are 4, 8, 16, and 32 MB, allowing a maximum of 68 MB total Mac RAM (4 MB onboard + 32 MB + 32 MB).

The DOS card's separate SIMM slot accepts one 72-pin SIMM up to 32 MB (80 ns or faster). DOS RAM is independent from Mac RAM.

=== Storage Systems ===

* Internal SCSI hard drive: 160 MB or 230 MB configurations
* 1.44 MB SuperDrive (auto-inject 3.5" floppy)
* Optional internal 2× CD-ROM drive (AppleCD 300i)
* External SCSI connector (DB-25) for additional devices

== Display and Graphics ==

=== Mac Video ===

Built-in video with 512 KB VRAM (expandable to 1 MB via VRAM SIMMs):

{| class="wikitable" style="width:60%; text-align:center;"
|+ '''Supported Resolutions'''
|-
! Resolution !! 512 KB VRAM !! 1 MB VRAM
|-
| 512×384 || 16-bit || 16-bit
|-
| 640×480 || 8-bit || 16-bit
|-
| 800×600 || 8-bit || 16-bit
|-
| 832×624 || 8-bit || 16-bit
|-
| 1024×768 || 4-bit || 8-bit
|-
| 1152×870 || 4-bit || 8-bit
|}

=== DOS Video ===

The DOS card includes 512 KB dedicated VRAM for DOS display output. Video can be displayed through:

* The Mac's DB-15 video port using the included Y-adapter cable
* A separate VGA monitor connected to the DOS card's output

== Input/Output and Expansion ==

=== Port Configuration ===

* 2× ADB ports (keyboard and mouse)
* 2× Serial ports (printer and modem, mini DIN-8)
* 1× SCSI port (DB-25)
* 1× AAUI-15 Ethernet port
* 1× DB-15 video output
* 1× Audio output (3.5mm)
* 1× Microphone input (omni)
* 1× PC game port (DOS card)

=== Expansion ===

The PDS slot is occupied by the DOS Compatibility Card. A NuBus adapter (M1402LL/A) that would normally allow installation of a 7" NuBus card cannot be used with the DOS Compatible model.

== General Maintenance ==

The Quadra 610 DOS Compatible shares the same base hardware and case design as the [[Macintosh Centris 610]]. For detailed maintenance practices including cleaning, PRAM battery management, connector corrosion prevention, and voltage adjustments, refer to the [[Macintosh Centris 610 General Maintenance]] page.

== Capacitor Replacement Guide ==

Detailed capacitor replacement guidelines for the logic board can be found on the [[Macintosh Centris 610 Capacitor Replacement Guide]] page.

== Troubleshooting ==

A comprehensive troubleshooting guide addressing no power, video issues, and other common problems is available on the [[Macintosh Centris 610 Troubleshooting]] page.

For DOS card-specific issues:

{| class="wikitable" style="width:100%;"
|+ '''DOS Card Troubleshooting'''
|-
! Symptom !! Possible Cause !! Recommended Action
|-
| No DOS video || Y-cable not connected || Verify Y-adapter cable connections
|-
| Cannot switch to DOS || Card not seated properly || Reseat DOS card in PDS slot
|-
| DOS mode freezes || Insufficient DOS RAM || Install SIMM in DOS card slot
|-
| PC game port not working || Driver not loaded || Install PC Setup software from included disks
|}

== Technical Details ==

<templatestyles src="Template:StyledTable/styles.css" />

=== System Architecture at a Glance ===

{| class="wikitable styled-table" style="width:90%; text-align:center;"
! Sub-system !! Specification
|-
| '''Mac CPU''' || Motorola 68040 @ 25 MHz
|-
| '''DOS CPU''' || Intel 486SX @ 25 MHz
|-
| '''Bus width''' || 32-bit data
|-
| '''ROM''' || 1 MB
|-
| '''Max Mac RAM''' || 68 MB (72-pin SIMMs)
|-
| '''Max DOS RAM''' || 32 MB (dedicated SIMM)
|-
| '''Video''' || 512 KB – 1 MB VRAM (Mac), 512 KB (DOS)
|-
| '''Storage''' || SCSI HDD, 1.44 MB floppy
|-
| '''Networking''' || AAUI-15 Ethernet
|}

=== Identification ===

{| class="wikitable styled-table" style="width:60%; text-align:center;"
|-
! Identifier !! Value
|-
| Apple Order No. || M2322LL/A (160 MB HDD)
|-
| Model Number || M2113
|-
| Gestalt ID || 53
|-
| ROM ID || $067C
|-
| ROM Version || $23
|}

== See Also ==

* [[Macintosh Quadra 610]]
* [[Macintosh Centris 610]]
* [[Power Macintosh 6100 DOS Compatible]]

== References ==

<references />

[[Category:Apple Vintage Computers]]
[[Category:Macintosh]]
[[Category:Macintosh Quadra]]

Macintosh Quadra 610 DOS Compatible - Revision history

Josh: Removed Category:Macintosh

Josh: Fix table widths to 70%

Josh: Fix infobox image syntax: wrap filename in File:...

Josh: Add product image to infobox

Josh: Created article for Macintosh Quadra 610 DOS Compatible