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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ

content/museum/morrow-designs-decision-1.md

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+---
+title: Morrow Designs Decision 1
+categories:
+- Computers
+types:
+- Professional Computer
+origins:
+- U.S.A.
+years:
+- '1982'
+cpus:
+- Z80-A
+params:
+  name: Decision 1
+  company: /companies/morrow-designs
+  company_name: Morrow Designs
+  specs:
+  - label: NAME
+    value: Decision 1
+  - label: MANUFACTURER
+    value: Morrow Designs
+  - label: TYPE
+    value: Professional Computer
+  - label: ORIGIN
+    value: U.S.A.
+  - label: YEAR
+    value: '1982'
+  - label: BUILT IN LANGUAGE
+    value: None
+  - label: KEYBOARD
+    value: Uses a serial video terminal
+  - label: CPU
+    value: Z80-A
+  - label: SPEED
+    value: 4 Mhz
+  - label: CO-PROCESSOR
+    value: None
+  - label: RAM
+    value: 64 Kb / 128 Kb depending on models
+  - label: ROM
+    value: Unknown
+  - label: TEXT MODES
+    value: 80 chars. x 25 lines
+  - label: GRAPHIC MODES
+    value: None
+  - label: COLORS
+    value: Monochrome
+  - label: SOUND
+    value: Beeper
+  - label: I/O PORTS
+    value: 14 x S-100 slots, 3 x serial and 2 x parallel ports
+  - label: BUILT IN MEDIA
+    value: |-
+      1 or 2 x 5.25'' 400/800 Kb floppy disk drives\
+      or 2 x 8'' 1Mb Kb floppy disk drives
+  - label: OS
+    value: CP/M 2.2, Micronix
+  - label: POWER SUPPLY
+    value: Built-in power supply
+  - label: PERIPHERALS
+    value: S-100 boards
+  - label: PRICE
+    value: |-
+      $3,495 - 2 x F.D.D version with CP/M 2.2 and WordStar\
+      $5,295 - 5 MB hard-disk version\
+      $7,290 - Three-user hard-disk version with Micronix O.S.
+  comments:
+  - author: furio ercolessi (Italy)
+    date: Friday 19th August 2016
+    text: I bought one with four 64k banks, a 16MB drive and Micronix for my father business in - I believe - 1982. Unfortunately the hard disk kept freezing due to a disk controller issue. Distance and lack of Internet did not help, and the local importer was of little help as well. So we used it with floppy and CP/M for a while, then we returned it and replaced it with an Olivetti M24. That was the second Unix machine in town, after a Cromemco System Three at the university.
+  - author: Adrien Holtzman (Oshkosh, WI)
+    date: Sunday 22nd December 2002
+    text: If anyone is interested in purchasing one of these, I have one in pristine condition. It includes a serial terminal + dust cover, a cp/m primer+programming guide, cp/m 2.2, wordstar, extra disks and 2 diskholders, 2 8 inch disk dirves. The main unit has 2 64k memory cards, disk controller, z80 cpu card. it is currently not functioning because the dip switch settings on the terminal are not set correctly. I have documentation on what each switch means, but no idea what they should be set to. Somebody who has a good amount of knowledge about these comps would be able to fix it easily. Please direct any ?'s to rch@vbe.com. If nobody is interested in purchacing it act quickly, if no buyer is found I will put it up for auction on ebay after I fix it.
+  oc_id: 648
+  source:
+    url: https://web.archive.org/web/20230417033502/http://www.old-computers.com/museum/computer.asp?c=648
+    date: '2023-04-17'
+---
+
+The Decision 1 is one of the last S-100 BUS based computer generation. Morrow Designs held it as the most flexible of all.
+
+On top of a classical CP/M 2.2 operating system, it also featured a special 8 bits version of Unix called **Micronix**, which allowed the compilation of many programs written in C for other machines under Unix.
+
+The Decision 1’s multi user version allowed to manage up to 15 users and 20 simultaneous tasks. According to Morrow Designs, testing confirmed the Decision 1 was faster than any competing system based on 16 bits 68000 microprocessors.
+
+---
+
+**Bert Greeley** adds:\
+I was working for George from 1979-81 when that machine was developed. About disk drives, originally, we used a 14" Shugart 14mb hard drive and Shugart 8" full-height floppy drives. We then went to the Tandon 1/2 height 8" drives, then to a 5" floppy drive whose manufacturer I don't remember. When Memorex came out with their 8"-5mb hard drive, we switched to them, then the 10mb version. BTW - the Decision II - or, as we called it, the "boat anchor" - was developed about the same time. This was the under-the-table box that was about 18"wide, 14" tall and 30" deep, as I recall. It was designed to fit in a rack-mount. Al (another Morrow employee at the time) and I installed 28 of these beasts at Micro Pro across the bay in San Rafael. My first job with George was rebuilding and aligning the heads on the floppy drives.
+
+Also - the 68000-based systems were what caused the death of Morrow Designs - that and the S-100 buss. We couldn't get reliable speed above 8mHz with an 8-bit buss (Z-80). George toyed with the 8086 but he was steadfastly against a 16-bit OS. At least until after I left in '81. That's something about him I never understood.
+
+I still have my original Imsai 8080 chassis with several Morrow S-100 cards. I don't have the drives any more, so the box doesn't run. I do have the OS, however, plus the source-code for the OS. At one point, I was promoted into writing assembly code for these machines. That led to my 27 or so years as a programmer.