Micro Channel expansion boards

Micro Channel expansion boards for IBM PS/2 and other MCA systems. MCA is electrically and mechanically distinct from ISA and EISA.

Also called: Micro Channel, MCA

At a glance

Introduced: 1987

Products listed: 1

Exact-target evidence: 0

Family/interface evidence: 1

Product types: 1

Vintage searches: 0

Directory: MCA boards

Browse everything below, or filter by product type, availability, and compatibility basis. Notes explain whether evidence names an exact model, a broader family, or only the relevant bus or interface for this platform.

Showing 1 product.

StatusProductWhat it doesLinks
Build itChecked Jul 15, 2026Snark Barker MCAby Eric Schlaepfer
mcamicro channelsound blasteropl2digital audiocpldadfopen hardwarediy

Implements Sound Blaster-compatible audio for Micro Channel systems with OPL2 synthesis and CPLD-managed bus, interrupt, and DMA logic.

For this platform (bus/interface): Tested systems include several IBM PS/2 Model 70, P70, P75, 80, and 95 configurations plus one NCR 3433. The NCR 3421 has reported issues, possibly involving its onboard SCSI controller.

Installation requires the supplied ADF and the host reference-disk configuration program. The maker warns against LS or HCT logic because it may not meet Micro Channel timing margins.

Sources
Hardware, logic, and configuration files

What's inside this page

  • Audio