Action Computer first put together S-100-based multi-user systems built using components from other manufacturers. The company produced its first system, the Discovery 1600, in 1980. This system featured Action Computer’s own multi-processing dpc/os multi-user operating system, which was designed for use with Digital Research’s CP/M Plus, as well as its own S-100 multi-processing system boards. The Discovery 1600 could support up to 16 terminals.
The Discovery 500 followed in 1982, which was designed for smaller workgroups of up to seven people. Action Computer also sold the dpc-186 multi-processor board. It was based on the Intel 8086 and 8087 processors, and it gave the Discovery systems dual 8/16-bit capability.
Action Computer Enterprise Discovery 1600 (1980, S-100 multi-user system)
Original Retail Price: $3540
Base Configuration: Z80A or 8086 CPU, 64K RAM (Z80A), 128K RAM (1MB max, 8086), 5.25- and 8-inch floppy disk drives, 20 S-100 slots, SCSI controller, serial port, CP/M Plus, dpc-os
Important Options: 8087 FPU, removable hard disk drive, tape backup
Action Computer Enterprise Discovery 500 (1982, S-100 multi-user system)
Original Retail Price: $6590
Base Configuration: 4MHz Z80A CPU, 64K RAM, 10MB hard disk drive, 640K floppy disk drive, SCSI controller, 10 S-100 slots, dpc-0s, CP/M Plus
Important Options: 8086/8087 multi-processor board