Concurrent CP/M-86 3.1 [StarLink Rev A]
Released in 1984 by Digital Research
For IBM PCs with the StarLink 4 port add-in card.

This version of Concurrent CP/M-86 is specifically for IBM PC computers with the StarLink 4 port communications card. This version will NOT run without it, as the system checks for its presence on boot-up.

The StarLink 4-port card is an XT plugin card with its own 8088 processor and 64k memory for address space at 0E000:0000h to 0F000:0000-1h. Each port uses a 16k workspace for communication to connected terminals via RS-232 connections re the 4-port card.  Four
terminals plus main XT = 5 user system.  Selectable IRQ, default IRQ 5. 

This archive includes five 320K disks in raw, ImageDisk and CopyQM format. 

Disk1 - StarLink Concurrent PC-DOS  For IBM PC or PCXT Boot Diskette.
Disk2 - StarLink Utilities I  For IBM PC or PCXT.
Disk3 - StarLink Utilities II  For IBM PC or PCXT.
Disk4 - StarLink Terminal Install Disk  For IBM PC or PCXT.
Disk5 - StarLink PC-DOS GSX Patch  For DR Draw, DR Graph.
