The card's POSID looks like @7CE8, or @7CEB, Catalog of MCA adapters was
sordid munged...

https://epdf.pub/circuit-cellar-magazine-issue-10-aug-sept-1989.html

Designing an interface product for the IBM PS/2 Micro Channel bus has
been greatly simplified with ONE CHIP PLUS, the 88COl Micro Channel
Interface Chip from Capital Equipment Corp. It provides complete Micro
Channel interface compatibility plus the decoding and logic functions
required for memory, I/O, and multifunction adapter cards.

Features of the 84-pin PLCC chip include Direct Memory Access (DMA)
arbitration and burst mode DMA, programmable memory and I/O timing
to accommodate wide access times on memory and peripheral chips, user-definable Programmable Option Select (POS)registers, and a
programmable Micro Channel board ID. In addition, multiplexed memory
address lines allow direct connection to 1MB DRAMs.


A unique user configuration capability permits adjusting the
characteristics and pinout of the chip to specific design needs. Some of
these characteristics include: enabling expanded and extended memory,
data width for each chip select, I/O access time, ROM size, and Micro
Channel ID number. Over 20 user configuration features can be set with a configuration PROM.

A development kit provides complete support for the Micro Channel
interface design and includes a prototype board with a working memory
adapter circuit, breadboarding area, and connections for a logic
analyzer. Interactive 88COl configuration software, EPROM-based code
for memory add-in cards, design utilities, and a DOS expanded memory
driver meeting EMM 4.0 are also provided.

Acquisition Engine software, which provides background or foreground
data acquisition, general-purpose I/O control, and graphics is also
included. Customized software modules can be added for specific
products. Documentation includes specifications, schematics, application
notes, recommended PC layout, and CAE parts libraries.

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