ISA Creative Labs Sound Blaster 2.0 Model CT1350B revisie nr.: 049151

ISA geluidskaart voor DOS retro gaming met FM-synthese Yamaha YM3812 (OPL2), met de zeldzame originele CMS upgrade! Bieden naar waarde. Op te halen in Zaandam of eventueel te versturen op kosten en risico van de koper (echter zonder kopersbescherming).

The Creative Labs Sound Blaster 2.0 (Model CT1350B), released in October 1991, is an 8-bit ISA sound card that became a standard for DOS gaming. It improved upon the SB 1.5 by introducing "auto-init" DMA for continuous sound loops and increased sampling rates.

Core Specifications

• Bus Interface: 8-bit ISA
• Digital Audio (DAC): 8-bit mono sampling, up to playback and recording (though some sources indicate up to recording)
• FM Synthesis: Yamaha YM3812 (OPL2)
• DSP Version: 2.02
• Compatibility: AdLib, Sound Blaster 1.0, 1.5
• Auto-Init DMA: Supported

Connectivity & Audio Ports

• Speaker-Out/Line-Out: stereo jack
• Microphone-In: mono jack
• Line-In/Voice-In: jack
• Game/MIDI Port: 15-pin D-sub connector (compatible with IBM game port)
• Internal Connectors: 2x C/MS (Creative Music System) upgrade sockets (early, some later models removed these)
• Volume Control: Physical thumbwheel on the back bracket

Key Features and Board Details

• Chipset: Creative CT1336A (Bus Interface), Yamaha YM3812 (FM), STMicroelectronics TDA7284 (Record/Playback), TEA2025 (Amplifier).
• Jumpers: Configurable IRQ (2, 3, 5, 7), DMA (1, 3), and I/O Address (220h or 240h).
• CT1350B Specifics: The "B" revision often refers to a later, more integrated PCB layout that was sometimes missing the C/MS chips but sometimes featured the sockets to add them. It was known for having a very high-quality, clear sound compared to later 16-bit cards.

MIDI: The DSP's MIDI UART was upgraded to full-duplex, but not fully MPU-401 compatible