Oak Technology

Oak was a graphics card and sound card manufacturer for the IBM PC and its compatibles. They also made a 286 and 386 motherboard chipset, which is covered on this page.

 

Graphics Cards

OakHorizon 286 and 386SX Chipset

Launched: 1989.

Two versions of the chipset were released: the OTI-050LAP was designed for use in laptops, whilst the OTI-050DESK was for desktop PCs. Both are five-chip chipsets, incorporating the following:-

OTI-051 - System support logic
OTI-052 - I/O Control logic
OTI-053 - DMA and memory controller
OTI-054 - Address buffer, Real-time clock, CMOS RAM
OTI-055 - Data buffer and power manager (only needed in the laptop version)

 

OTI037C ("Suntra")

Launched: 1988
Bus: ISA 16-bit.
Memory: 256 KB DRAM
Ports: 15-pin DSUB (analogue video output), 9-pin DSUB (digital video output)
RAMDAC: unknown
RAMDAC Speed: unknown
FCC ID: unknown
VESA Standard:
BIOS Dates: 01/08/90
Known BIOS Versions: ECv2.13-35
Price: ?

Another pic

Found on:

  • FCC ID: IDW37162002

 

OTI067

Launched: 1990
Bus: ISA 16-bit.
Memory: 256 KB or 512 KB DRAM
Ports: 15-pin DSUB (analogue video output)
Price: ?
FCC ID: 4DW67082004

Another pic

 

 


 

OTIVGA





 

Sound Cards

Diamond Multimedia OEM'd a few sound cards despite being largely remembered for their graphics cards. Oak technology were the development company behind these. Oak Technology exited the PC audio and 3D graphics markets in the quarter ended March 31st, 1998.

Mozart

FM synthesizer: Yamaha YMF262
Audio codec: Crystal CS4231-KL EP

A basic board offering only Ad Lib, SoundBlaster 1.x (mono output) compatibility. The OAK OTI-601 / OTI-605 "Mozart" chip itself was codeveloped by Oak and Media Chip who later got bought by OPTi, which is why it is related to OPTI's MAD16.
Panasonic, Mitsumi, Sony and IDE CD-ROM connectors - only one can be used at any one time.

 

Mozart-16

Introduced in 1994.
FM synthesizer: Yamaha YMF262
Audio codec: Analog Devices AD1846.
Oak OTI601 chip.
FCC ID: IEW30601211
PnP.

If the long number at the bottom of the Oak chip is 9-digits long, the card has a 'B'-chipset and is not MPU-401 compatible. If it's 11 digits long and has either 'EE' or 'FF' in it, the card is an 'E' or 'F' chipset, and is MPU-401 compatible.
Panasonic, Mitsumi, Sony and IDE CD-ROM connectors - only one can be used at any one time.
The default IRQ for this board is 11.

Other variants of this card are called the Mozart LCS-9620.

Drivers: DOS & Windows 3.x (OPL4 support in Win3.x), NT / XP, Windows 9x

More Images:

Mozart Wave Table

Introduced in 1994.
FM synthesizer: Yamaha YMF278B (OPL4)
Audio codec: Analog Devices AD1846.
Oak OTI601 chip.
FCC ID: IEW30601213

The Yamaha YRW801-M is a 1MB ROM that stores all the wave samples of the GM Level 1.
Panasonic, Mitsumi, Sony and IDE CD-ROM connectors - only one can be used at any one time. OPL4 chip.

Windows 9x