Sega Dreamcast - Revision history

Josh: Fix file reference

2026-02-10T11:33:52Z

Fix file reference

← Older revision		Revision as of 12:33, 10 February 2026
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	{{Infobox computer		{{Infobox computer
	\| name = Sega Dreamcast		\| name = Sega Dreamcast
	\| image = [[File:Sega-dreamcast-set.~~png~~\|250px]]		\| image = [[File:Sega-dreamcast-set.jpg\|250px]]
	\| caption = Sega Dreamcast console, controller, and VMU		\| caption = Sega Dreamcast console, controller, and VMU
	\| manufacturer = Sega		\| manufacturer = Sega
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	== Gallery ==		== Gallery ==
	<gallery mode="packed" heights="180">		<gallery mode="packed" heights="180">
	File:Sega-dreamcast-set.~~png~~\|Dreamcast console, controller, and VMU		File:Sega-dreamcast-set.jpg\|Dreamcast console, controller, and VMU
	File:Sega-Dreamcast-Motherboard-Top.jpg\|Dreamcast mainboard (top view)		File:Sega-Dreamcast-Motherboard-Top.jpg\|Dreamcast mainboard (top view)
	File:Sega-Dreamcast-Controller-wVMU-FL.jpg\|Standard controller with VMU inserted		File:Sega-Dreamcast-Controller-wVMU-FL.jpg\|Standard controller with VMU inserted

Josh at 20:42, 9 August 2025

2025-08-09T20:42:34Z

← Older revision		Revision as of 21:42, 9 August 2025
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	The '''Sega Dreamcast''' is a home video game console released by Sega in late 1998 in Japan and worldwide in 1999. As Sega's final console, it introduced several innovations, including built-in modem support for online play and a versatile architecture aimed at both arcade and home gaming.		The '''Sega Dreamcast''' is a home video game console released by Sega in late 1998 in Japan and worldwide in 1999. As Sega's final console, it introduced several innovations, including built-in modem support for online play and a versatile architecture aimed at both arcade and home gaming.

	== 🧠 Architecture and Processor ==		== Architecture and Processor ==
	At its core, the Dreamcast is powered by a '''Hitachi SH-4''' 32-bit RISC CPU running at 200 MHz, delivering 360 MIPS and 1.4 GFLOPS. The SH-4 features a superscalar architecture with a 128-bit SIMD DSP for fast floating-point operations, making it well-suited for 3D graphics and arcade-quality games.		At its core, the Dreamcast is powered by a '''Hitachi SH-4''' 32-bit RISC CPU running at 200 MHz, delivering 360 MIPS and 1.4 GFLOPS. The SH-4 features a superscalar architecture with a 128-bit SIMD DSP for fast floating-point operations, making it well-suited for 3D graphics and arcade-quality games.

	The system’s graphics are handled by the '''PowerVR2 CLX2''' GPU, developed by NEC and VideoLogic, capable of hardware transform and lighting, bump mapping, anti-aliasing, and order-independent transparency.		The system’s graphics are handled by the '''PowerVR2 CLX2''' GPU, developed by NEC and VideoLogic, capable of hardware transform and lighting, bump mapping, anti-aliasing, and order-independent transparency.

	== 💾 Memory and Storage ==		== Memory and Storage ==
	The Dreamcast’s memory subsystem comprises:		The Dreamcast’s memory subsystem comprises:
	* '''16 MB 64-bit main RAM'''		* '''16 MB 64-bit main RAM'''
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	For storage, the Dreamcast uses proprietary '''GD-ROM''' discs (1.2 GB capacity), providing more space than standard CDs. Save data is stored on '''VMU''' (Visual Memory Unit) memory cards, each with 128 KB flash memory, which also function as mini-game devices and secondary screens.		For storage, the Dreamcast uses proprietary '''GD-ROM''' discs (1.2 GB capacity), providing more space than standard CDs. Save data is stored on '''VMU''' (Visual Memory Unit) memory cards, each with 128 KB flash memory, which also function as mini-game devices and secondary screens.

	== 🖥️ Display and Graphics ==		== Display and Graphics ==
	The graphics subsystem is built around the '''PowerVR2 CLX2''' GPU, offering:		The graphics subsystem is built around the '''PowerVR2 CLX2''' GPU, offering:
	* '''640×480 pixels''' maximum resolution (progressive scan)		* '''640×480 pixels''' maximum resolution (progressive scan)
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	The GPU can render approximately 3–5 million polygons per second in real-world scenarios, enabling arcade-quality visuals.		The GPU can render approximately 3–5 million polygons per second in real-world scenarios, enabling arcade-quality visuals.

	== 🔊 Sound Capabilities ==		== Sound Capabilities ==
	Audio is managed by the '''Yamaha AICA''' sound processor, which includes:		Audio is managed by the '''Yamaha AICA''' sound processor, which includes:
	* '''64 hardware channels''' (PCM/ADPCM)		* '''64 hardware channels''' (PCM/ADPCM)
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	This architecture allows for complex soundtracks, voice samples, and immersive sound effects.		This architecture allows for complex soundtracks, voice samples, and immersive sound effects.

	== 🎮 Input/Output and Expansion ==		== Input/Output and Expansion ==
	The Dreamcast features a range of I/O and expansion options:		The Dreamcast features a range of I/O and expansion options:
	* '''Four controller ports''' for standard controllers, light guns, arcade sticks, and other peripherals		* '''Four controller ports''' for standard controllers, light guns, arcade sticks, and other peripherals
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	* '''Optional peripherals''': keyboard, mouse, microphone, camera, and more		* '''Optional peripherals''': keyboard, mouse, microphone, camera, and more

	== 🔍 PCB Schematics & Service Manual ==		== PCB Schematics & Service Manual ==
	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />

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	The Dreamcast’s mainboard integrates the SH-4 CPU, PowerVR2 GPU, AICA sound processor, and RAM. The power supply board is a separate, easily replaceable module. Official service manuals and schematics are available via [[Sega Dreamcast Service Manual (PDF)]] and enthusiast resources.		The Dreamcast’s mainboard integrates the SH-4 CPU, PowerVR2 GPU, AICA sound processor, and RAM. The power supply board is a separate, easily replaceable module. Official service manuals and schematics are available via [[Sega Dreamcast Service Manual (PDF)]] and enthusiast resources.

	== 📷 Gallery ==		== Gallery ==
	<gallery mode="packed" heights="180">		<gallery mode="packed" heights="180">
	File:Sega-dreamcast-set.png\|Dreamcast console, controller, and VMU		File:Sega-dreamcast-set.png\|Dreamcast console, controller, and VMU
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	</gallery>		</gallery>

	== 🧪 Related Pages ==		== Related Pages ==
	* [[Sega Dreamcast Maintenance Guide\|Sega Dreamcast General Maintenance]]		* [[Sega Dreamcast Maintenance Guide\|Sega Dreamcast General Maintenance]]
	* [[Sega Dreamcast Troubleshooting Guide]]		* [[Sega Dreamcast Troubleshooting Guide]]

Josh: /* 🧪 Related Pages */

2025-05-09T15:31:14Z

🧪 Related Pages

← Older revision		Revision as of 16:31, 9 May 2025
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	{\| class="wikitable styled-table" style="width:80%; text-align:center;"		{\| class="wikitable styled-table" style="width:80%; text-align:center;"
	! style="background-color:#f2f2f2;"\| Mainboard		! style="background-color:#f2f2f2;"\| Mainboard
	! style="background-color:#f2f2f2;"\| ~~Power Supply Board~~		! style="background-color:#f2f2f2;"\| Mainboard Schematic
	\|-		\|-
	\| [[File:Dreamcast-~~motherboard~~.jpg\|thumb\|~~center\|300px~~\|Sega Dreamcast mainboard~~]][[File:Dreamcast-motherboard-schematic.png\|center\|thumb\|Dreamcast Mainboard Schematic~~]]		\| [[File:Sega-Dreamcast-Motherboard-Top.jpg\|center\|thumb\|337x337px\|Sega Dreamcast mainboard]]
	\| [[File:Dreamcast-psu.jpg\|thumb\|center\|220px\|Dreamcast Power Supply Unit~~]][[File:Dreamcast-psu-schematic.png\|center\|thumb\|Dreamcast PSU Schematic~~]]		\| [[File:Dreamcast-psu.jpg\|thumb\|center\|220px\|Dreamcast Power Supply Unit]]
	\|}		\|}

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	== 📷 Gallery ==		== 📷 Gallery ==
	<gallery mode="packed" heights="180">		<gallery mode="packed" heights="180">
	File:Sega-dreamcast-set.~~jpg~~\|Dreamcast console, controller, and VMU		File:Sega-dreamcast-set.png\|Dreamcast console, controller, and VMU
	File:Dreamcast-~~motherboard~~.jpg\|Dreamcast mainboard (top view)		File:Sega-Dreamcast-Motherboard-Top.jpg\|Dreamcast mainboard (top view)
	File:Dreamcast-~~psu.jpg\|Power supply module~~		File:Sega-Dreamcast-Controller-wVMU-FL.jpg\|Standard controller with VMU inserted
	~~File:Dreamcast~~-~~controller~~.jpg\|Standard controller with VMU inserted		File:Sega-Dreamcast-VMU.jpg\|Visual Memory Unit (VMU)
	File:~~Dreamcast-gdrom-drive.jpg\|GD~~-~~ROM optical drive assembly~~		File:Sega-Dreamcast-Broadband-Adapter-FL.jpg\|Broadband adapter peripheral
	~~File:~~Dreamcast-~~vmu~~.jpg\|Visual Memory Unit (VMU)
	File:Dreamcast-~~broadband~~-~~adapter~~.jpg\|Broadband adapter peripheral
	</gallery>		</gallery>

	== 🧪 Related Pages ==		== 🧪 Related Pages ==
	* [[Sega Dreamcast General Maintenance]]		* [[Sega Dreamcast Maintenance Guide\|Sega Dreamcast General Maintenance]]
	* [[Sega Dreamcast Troubleshooting Guide]]		* [[Sega Dreamcast Troubleshooting Guide]]
	* [[Sega Dreamcast Controller Repair Guide]]		* [[Sega Dreamcast Controller Repair Guide]]
	* [[Sega Dreamcast Capacitor Replacement Guide]]		* [[Sega Dreamcast Capacitor Replacement Guide]]
	* [[Sega Dreamcast Service Manual (PDF)]]		* [[Sega Dreamcast Service Manual (PDF)]]

	~~[[Category:Sega Consoles]]~~
	~~[[Category:Dreamcast]]~~
	~~[[Category:Sixth-generation video game consoles]]~~

	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />
			[[Category:Sega Systems]]

Josh at 15:26, 9 May 2025

2025-05-09T15:26:06Z

← Older revision		Revision as of 16:26, 9 May 2025
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	{{Infobox computer		{{Infobox computer
	\| name = Sega Dreamcast		\| name = Sega Dreamcast
	\| image = [[File:Sega-dreamcast-set.~~jpg~~\|250px]]		\| image = [[File:Sega-dreamcast-set.png\|250px]]
	\| caption = Sega Dreamcast console, controller, and VMU		\| caption = Sega Dreamcast console, controller, and VMU
	\| manufacturer = Sega		\| manufacturer = Sega
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	\| weight = 1.5 kg		\| weight = 1.5 kg
	\| os = Sega OS (Katana SDK), custom middleware		\| os = Sega OS (Katana SDK), custom middleware
	\| predecessor = [[Sega Saturn]]		\| predecessor = [[Sega Saturn (Model 2)]]
	\| successor =		\| successor =
	\| codename = Katana		\| codename = Katana
	\| model = HKT-3000 (JP/NA/EU/AU)		\| model = HKT-3000 (JP/NA/EU/AU)
	\| logo = [[File:Dreamcast~~-Logo-Orange~~.svg\|~~250px~~]]		\| logo = [[File:Dreamcast logo.svg\|150px]]
	\| ~~Mega Drive / Genesis]]~~		\|}}
	~~\| codename = Katana~~
	}}

	The '''Sega Dreamcast''' is a home video game console released by Sega in late 1998 in Japan and worldwide in 1999. As Sega's final console, it introduced several innovations, including built-in modem support for online play and a versatile architecture aimed at both arcade and home gaming.		The '''Sega Dreamcast''' is a home video game console released by Sega in late 1998 in Japan and worldwide in 1999. As Sega's final console, it introduced several innovations, including built-in modem support for online play and a versatile architecture aimed at both arcade and home gaming.

Josh: Automated update by bot

2025-05-09T15:22:54Z

Automated update by bot

New page

{{Infobox computer
| name = Sega Dreamcast
| image = [[File:Sega-dreamcast-set.jpg|250px]]
| caption = Sega Dreamcast console, controller, and VMU
| manufacturer = Sega
| type = Home video game console
| release date = 27 November 1998 (JP); 9 September 1999 (NA); 14 October 1999 (EU); 30 November 1999 (AU)
| discontinued = 31 March 2001 (hardware)
| price = JP¥29,000 (JP launch); US$199 (NA launch)
| cpu = Hitachi SH-4 RISC @ 200 MHz
| memory = 16 MB main RAM, 8 MB video RAM, 2 MB sound RAM
| storage = GD-ROM (1.2 GB), VMU flash memory (128 KB)
| display = 640×480 pixels, 16.77 million colours (24-bit), VGA output supported
| sound = Yamaha AICA, 64-channel PCM/ADPCM, 32-bit ARM7 @ 45 MHz
| dimensions = 190 mm × 195 mm × 76 mm
| weight = 1.5 kg
| os = Sega OS (Katana SDK), custom middleware
| predecessor = [[Sega Saturn]]
| successor =
| codename = Katana
| model = HKT-3000 (JP/NA/EU/AU)
| logo = [[File:Dreamcast-Logo-Orange.svg|250px]]
| Mega Drive / Genesis]]
| codename = Katana
}}

The '''Sega Dreamcast''' is a home video game console released by Sega in late 1998 in Japan and worldwide in 1999. As Sega's final console, it introduced several innovations, including built-in modem support for online play and a versatile architecture aimed at both arcade and home gaming.

== 🧠 Architecture and Processor ==
At its core, the Dreamcast is powered by a '''Hitachi SH-4''' 32-bit RISC CPU running at 200 MHz, delivering 360 MIPS and 1.4 GFLOPS. The SH-4 features a superscalar architecture with a 128-bit SIMD DSP for fast floating-point operations, making it well-suited for 3D graphics and arcade-quality games.

The system’s graphics are handled by the '''PowerVR2 CLX2''' GPU, developed by NEC and VideoLogic, capable of hardware transform and lighting, bump mapping, anti-aliasing, and order-independent transparency.

== 💾 Memory and Storage ==
The Dreamcast’s memory subsystem comprises:
* '''16 MB 64-bit main RAM'''
* '''8 MB video RAM (VRAM)'''
* '''2 MB sound RAM (AICA)'''

For storage, the Dreamcast uses proprietary '''GD-ROM''' discs (1.2 GB capacity), providing more space than standard CDs. Save data is stored on '''VMU''' (Visual Memory Unit) memory cards, each with 128 KB flash memory, which also function as mini-game devices and secondary screens.

== 🖥️ Display and Graphics ==
The graphics subsystem is built around the '''PowerVR2 CLX2''' GPU, offering:
* '''640×480 pixels''' maximum resolution (progressive scan)
* '''16.77 million colours''' (24-bit RGB)
* '''VGA output''' (via optional cable), S-Video, composite, and RGB SCART (region dependent)
* Advanced features: hardware Z-buffering, anti-aliasing, environment mapping, and real-time texture decompression

The GPU can render approximately 3–5 million polygons per second in real-world scenarios, enabling arcade-quality visuals.

== 🔊 Sound Capabilities ==
Audio is managed by the '''Yamaha AICA''' sound processor, which includes:
* '''64 hardware channels''' (PCM/ADPCM)
* '''32-bit ARM7 RISC CPU''' @ 45 MHz dedicated to audio tasks
* 2 MB dedicated sound RAM
* 44.1 kHz/48 kHz stereo output, with real-time effects and MIDI synthesis

This architecture allows for complex soundtracks, voice samples, and immersive sound effects.

== 🎮 Input/Output and Expansion ==
The Dreamcast features a range of I/O and expansion options:
* '''Four controller ports''' for standard controllers, light guns, arcade sticks, and other peripherals
* '''Visual Memory Unit (VMU)''' slots in each controller for save data, mini-games, and status displays
* '''Built-in 56k modem''' (RJ-11) for online multiplayer and web browsing (10BASE-T LAN adapter available in Japan)
* '''AV output''' supporting composite, S-Video, RGB, and VGA (with adapter)
* '''Serial expansion port''' (for link cable, debugging, or broadband adapter)
* '''Optional peripherals''': keyboard, mouse, microphone, camera, and more

== 🔍 PCB Schematics & Service Manual ==
<templatestyles src="Template:StyledTable/styles.css" />

{| class="wikitable styled-table" style="width:80%; text-align:center;"
! style="background-color:#f2f2f2;"| Mainboard
! style="background-color:#f2f2f2;"| Power Supply Board
|-
| [[File:Dreamcast-motherboard.jpg|thumb|center|300px|Sega Dreamcast mainboard]][[File:Dreamcast-motherboard-schematic.png|center|thumb|Dreamcast Mainboard Schematic]]
| [[File:Dreamcast-psu.jpg|thumb|center|220px|Dreamcast Power Supply Unit]][[File:Dreamcast-psu-schematic.png|center|thumb|Dreamcast PSU Schematic]]
|}

The Dreamcast’s mainboard integrates the SH-4 CPU, PowerVR2 GPU, AICA sound processor, and RAM. The power supply board is a separate, easily replaceable module. Official service manuals and schematics are available via [[Sega Dreamcast Service Manual (PDF)]] and enthusiast resources.

== 📷 Gallery ==
<gallery mode="packed" heights="180">
File:Sega-dreamcast-set.jpg|Dreamcast console, controller, and VMU
File:Dreamcast-motherboard.jpg|Dreamcast mainboard (top view)
File:Dreamcast-psu.jpg|Power supply module
File:Dreamcast-controller.jpg|Standard controller with VMU inserted
File:Dreamcast-gdrom-drive.jpg|GD-ROM optical drive assembly
File:Dreamcast-vmu.jpg|Visual Memory Unit (VMU)
File:Dreamcast-broadband-adapter.jpg|Broadband adapter peripheral
</gallery>

== 🧪 Related Pages ==
* [[Sega Dreamcast General Maintenance]]
* [[Sega Dreamcast Troubleshooting Guide]]
* [[Sega Dreamcast Controller Repair Guide]]
* [[Sega Dreamcast Capacitor Replacement Guide]]
* [[Sega Dreamcast Service Manual (PDF)]]

[[Category:Sega Consoles]]
[[Category:Dreamcast]]
[[Category:Sixth-generation video game consoles]]

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