Atari Lynx

The Atari Lynx is a handheld game console released by Atari Corporation on September 1, 1989. It was the first handheld game console to feature a colour LCD display. Originally developed at Epyx under the codename "Handy" by former Amiga designers RJ Mical and Dave Needle, the system was designed from 1986 and first shown at the Winter Consumer Electronics Show in January 1989. Epyx entered financial difficulty and Atari Corporation took over manufacturing and marketing, while Epyx handled initial software development. Epyx subsequently declared bankruptcy, leaving Atari as the sole owner of the hardware.

Atari Lynx

Atari Lynx I Handheld Console
Specifications
Manufacturer	Atari Corporation
Type	Handheld Game Console
Released	September 1, 1989
Discontinued	1995
Intro price	US$179.99 (1989)
CPU	WDC 65SC02 @ 4 MHz (inside "Mikey" custom VLSI)
Memory	64 KB DRAM (120 ns), 512 bytes bootstrap ROM
Storage	ROM cartridge (128 KB, 256 KB, 512 KB; up to 2 MB with bank switching)
Display	3.5" backlit colour LCD, 160 × 102 pixels, 4,096-colour palette, 16 simultaneous colours per scanline
Sound	4 channels, 8-bit DAC per channel, mono (Lynx I) / stereo (Lynx II)
Dimensions	273 × 108 × 38 mm (Lynx I), 235 × 108 × 51 mm (Lynx II)
Weight	519 g (Lynx I), 441 g (Lynx II)
OS / Firmware	Bootstrap ROM (512 bytes)
Codename	Handy
Model no.	PAG-0200 (Lynx I), PAG-0401 (Lynx II)

The Lynx competed against Nintendo's Game Boy (released five months earlier), Sega's Game Gear, and NEC's TurboExpress. Despite its technical superiority — colour graphics, hardware sprite scaling, and networking capability — the Lynx sold approximately 2–3 million units before discontinuation in 1995, compared to the Game Boy's 16 million units sold in the same period. The Game Boy's lower price, longer battery life, and larger game library (particularly the pack-in Tetris) were the primary factors in its dominance. Atari published 73 official titles for the Lynx before shifting focus to the Atari Jaguar in 1993.

In 1991, Atari released the Lynx II, a smaller and lighter redesign with improved battery life, rubber hand grips, a clearer backlit screen with a power-save option, and a stereo headphone jack replacing the original mono output. The Lynx II launched at US$99 without accessories.

Architecture and Processors

The Lynx uses two custom 16 MHz VLSI CMOS chips, known as "Mikey" and "Suzy", which together handle all processing, graphics, sound, and I/O functions.

Mikey

The Mikey chip contains:

• A WDC 65SC02 8-bit CPU running at up to 4 MHz (approximately 3.6 MHz average), a variant of the MOS 6502
• 4-channel sound engine with 8-bit DAC per channel, capable of both DAC and PSG (pulse/noise via LFSR taps) output
• Video DMA driver for the LCD
• 8 system timers (two reserved for LCD timing, one for UART)
• Interrupt controller
• UART for Comlynx networking (8E1 format, up to 62,500 baud; turbo mode up to 1,000,000 baud)

Suzy

The Suzy chip is a 16-bit custom blitter and maths co-processor providing:

• Unlimited blitter sprites with collision detection (practically limited to around 128)
• Hardware sprite scaling, distortion, and tilting
• Hardware decompression of compressed sprite data
• Hardware clipping and multi-directional scrolling
• Maths engine: 16 × 16 → 32-bit multiply with optional accumulation; 32 ÷ 16 → 16-bit divide
• Parallel processing alongside the CPU

The Lynx was the first gaming console with hardware support for sprite zooming and distortion. Dave Needle's technique of using stretched triangles instead of full polygons enabled fast pseudo-3D rendering on the handheld hardware.

Memory and Storage

• 64 KB of 120 ns DRAM, shared between CPU and Suzy
• 512 bytes of bootstrap and cartridge-loading ROM
• Two RAM chips: HM50464-12 (Lynx I) or D41464L-80 (Lynx II), each providing 256 Kbit (64K × 4-bit)

Game data is loaded from the cartridge ROM into RAM before execution, which means available working RAM decreases as game data is loaded. Cartridge sizes range from 128 KB to 512 KB, with bank switching supporting up to 2 MB.

Display

The Lynx features a 3.5-inch diagonal backlit colour LCD with:

• 160 × 102 pixel resolution (16,320 addressable pixels)
• 4,096-colour palette (12-bit colour depth)
• 16 simultaneous colours (4-bit) per scanline from the palette
• Variable frame rate up to 75 fps

The Lynx I uses a CCFL backlight tube, which contributes to high power consumption. The Lynx II offers a backlight on/off switch for battery conservation. The display can be flipped 180° in software, allowing left-handed play — a feature unique to the Lynx among its contemporaries.

Sound

Audio is generated by the Mikey chip:

• 4 independent channels, each with an 8-bit DAC
• Frequency range: 100 Hz to above 20 kHz
• Channels can operate in DAC mode for sampled audio or PSG mode for pulse waves and pseudo-random noise via configurable LFSR taps
• Mono output on Lynx I (via internal 16 Ω, 0.2 W speaker)
• Stereo output on Lynx II (via internal 8 Ω, 0.2 W speaker)
• 3.5 mm headphone jack (mono on Lynx I, stereo on Lynx II)

Power Supply

The Lynx requires 9 V DC input via:

• 6 × AA batteries in an internal battery holder (4–5 hours on Lynx I, 5–6 hours on Lynx II)
• External 9 V DC, 1 A power supply (centre-positive barrel connector)

The system includes a built-in switching voltage regulator circuit that converts the 9 V input to 5 V for the logic and display. Key components in this circuit include a MOSFET (Q11 on Lynx I, Q12 on Lynx II), a zener diode (ZD1 on Lynx I, D13 on Lynx II), and associated transistors. Failure of these components is one of the most common causes of non-working Lynx consoles.

Connectivity

• Comlynx port — serial UART networking allowing up to 8 players (some sources cite up to 18) via daisy-chained cables. Each player requires a separate Lynx and game cartridge.
• The networking system was originally designed for infrared (codenamed "RedEye") but was changed to cable before release because infrared links were too easily interrupted.

Physical Design

The Lynx I is a large, flat unit measuring 273 × 108 × 38 mm and weighing 519 g (without batteries). It features a joypad on the left, two fire buttons (A and B), Option 1 and Option 2 buttons, Pause, and On/Off. The cartridge slot is at the top of the unit.

The Lynx II, released in 1991, is smaller at 235 × 108 × 51 mm and 441 g, with rubber grips, a redesigned button layout, and the backlight power-save switch.

Both models support ambidextrous play — the console can be flipped upside down and the screen orientation reversed in software, placing the joypad under the right hand.

Chip Reference

Lynx I — Key ICs

Designator	Part	Function
U1	Mikey (VLSI VL65NC02)	CPU, sound, DMA, timers, UART
U2	Suzy (VLSI)	Graphics blitter, maths co-processor, controller I/O
U3	HM50464-12	DRAM (64K × 4-bit)
U4	HM50464-12	DRAM (64K × 4-bit)
U5	LM386	Audio amplifier
U6	4069	Hex inverter
U7	74HC04	Hex inverter
U8	74HC4040	12-stage binary counter
U9	74HC164	8-bit shift register

Known Issues

The Atari Lynx is well known for age-related failures, primarily:

• Electrolytic capacitor degradation — dried-out or leaking capacitors cause no power, dim screens, no audio, and instability. Recapping is considered essential maintenance for any Lynx unit. See Atari Lynx Capacitor Replacement Guide.
• Voltage regulator circuit failure — the MOSFET (Q11/Q12) and zener diode (ZD1/D13) commonly fail, preventing the unit from powering on.
• Power jack breakage — physical stress on the DC input jack causes pin fractures.
• Speaker damage — caused by accidentally plugging a 9 V power supply into the headphone jack.
• CCFL backlight failure (Lynx I) — the cold-cathode fluorescent tube degrades over time.

For detailed repair procedures, see the Atari Lynx Troubleshooting Guide and Atari Lynx General Maintenance.

Related Pages

• Atari Lynx General Maintenance
• Atari Lynx Troubleshooting Guide
• Atari Lynx Capacitor Replacement Guide