PDP-11 on an S-100 Card

There was a thread here or on the N8VEM-S100 list about putting different vintage CPUs on a newly designed S-100 boards. I happen to be cleaning up my office and came across something done back in the day worth noting on that theme... In the May 1984 issue of Microsystems, /The Journal for Advanced Microcomputing/ (Vol 5, Num 5), there is a directory of S-100 products. ABACUS Technology Systems, Inc is among the vendors listed, and on page 67 they have a 1/4 page ad for their PC11 product - right next to a similar ad for the Lattice C compiler. This board features a T11 with 32KW of RAM, and runs RT-11 v5.0 with compatible I/O devices emulated somehow by a CP/M program (presumably running on an 808x/Z80 card in the same chassis). Here's the full text of the ad: ========================= PC11 Gives You DEC RT-11 on S-100 [B/W picture of board] o PDP-11 Compatible Instruction Set o Includes RT-11 Version 5.0 Operating System o IEEE-696 S-100 Bus, 8 Consecutive I/O Ports, Switch Selectable o 64K Bytes of Memory on the PC11 Board o Uses 8 Inch Disks Compatible with DEC RX01 and RX02 Drives o CP/M Interface Program Emulates Standard DEC I/O Devices o Supported Devices: Console, Printer, Dual Single Density 8 Inch Floppy Disk Drives o Other Devices May Be Supported By Custom Programming CP/M is a Trademark of Digital Research Corporation PDP-11 and RT-11 are Trademarks of Digital Equipment Corporation ABACUS Technology Systems, Inc. P.O. Box 740918 Houston, Texas 77274-0918 or call (713) 777 - 0401 ========================= So, anybody have one of these boards? Or did anybody on the list use one back in the day and care to comment on the experience? --Steve.