A
- Ai Electronics ABC-24 / ABC-26 (Japan, running Dosket, CP/M & M/PM)
- Action Computer Enterprises ACE-1000
- Action Computer Enterprises Discovery D-500 (CP/M-80 on each of up to 4 user processors, DPC/OS on service processor)
- Action Computer Enterprises Discovery D-1600 (CP/M-80 on each of up to 15 user processors, DPC/OS on service processor)
- Actrix Computer Corp. Actrix (Access Matrix)
- Advanced Digital Corporation Super Six
- Allen Bradley Advisor - Industrial Programmable controller graphical user interface (development mode only), fl. ca. 1985
- Alphatronic P2, P3 (5 MB harddisc)
- MITS Altair 8800
- Altos 580
- Amada Aries 222/245 CNC turret punch press
- Amstrad CPC 464 (w/DDI-1 disk drive interface), 664, 6128, 6128Plus
- Amstrad PCW 8256/8512/9512/9256/10
- Amust Executive 816
- Apple II (with Microsoft Z-80 SoftCard or PCPI AppliCard; on some clones a SoftCard equivalent was built into the mainboard)
- Applied Technology MicroBee (56KB+ RAM models)
- Aster CT-80
- Atari 800 and XL/XE (with ATR8000 module, LDW Super 2000, CA-2001 or Indus GT disk drives expanded to 64k)
- Atari ST
- AT&T 6300 with CPU 3 upgrade
- AT&T 6300 PLUS
Read more about this topic: List Of Machines Running CP/M