Micro Channel Architecture
aka Microchannel or MCA

Definitions (Arbitration, DMA...)

MCA Slot Types (16/32-bit, BVE, AVE, MME extensions)
MCA Slot Pinouts
Processor Complex Pinout
MCA Data Transfers (10, 20, 40, 80, 160 MB/s modes)
MCA Data Transfer Procedures
   Basic Transfer
   Streaming Transfer
   DMA Transfer
MCA Interrupt Procedures
MCA Features (Streaming, Address and Data Parity, Synchronous Exception Signaling
MCA Benefits Adapter mounting and grounding
Why MCA?
Bus Evolution
System Bus or System Bottleneck? Whatever happened to EISA and the Micro Channel?
How PC/XT/AT Cards Can Prohibit Interrupt Sharing
The Micro Channel versus the AT Bus
Comparing IBM's Micro Channel and Apple's NuBus
PCI/Micro Channel White Paper (PCI/MCA comparison by IBM)
MCA: The Sacrificial Lion
PS/2 Model 50 - Under The Cover (BYTE article focused on MCA)

Subsystem Control Block (SCB) An Architecture for Micro Channel Bus Masters

System Setup (POS for Adapters and System Board)
Planar POS Registers (Server 95)
Programmable Option Select Operation
About ADF Files

Checking for Micro Channel Bus
Retrieving the Planar ID
   List of Known Planar IDs
Finding an Adapter's Slot Number

mca_32.c / mca.h MCA Support in Linux Kernel (C source files)

Watchdog Timer

Content created and/or collected by:
Louis Ohland, Peter Wendt, William Walsh, David Beem, Tatsuo Sunagawa, Jim Shorney, Tim Clarke, Kevin Bowling, Tomáš Slavotínek, and many others.

Ardent Tool of Capitalism - MAD Edition! is maintained by Tomáš Slavotínek.
Last update: 06 Oct 2021 - Changes & Credits | Legal Info & Contact