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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Markdown

---
title: Lobo Drives International MAX-80
categories:
- Computers
types:
- Professional Computer
origins:
- U.S.A.
years:
- '1982'
cpus:
- Z80-B
params:
name: MAX-80
company: /companies/lobo-drives-international
company_name: Lobo Drives International
specs:
- label: NAME
value: MAX-80
- label: MANUFACTURER
value: Lobo Drives International
- label: TYPE
value: Professional Computer
- label: ORIGIN
value: U.S.A.
- label: YEAR
value: '1982'
- label: BUILT IN LANGUAGE
value: None
- label: KEYBOARD
value: Full-stroke 76 keys with numeric keypad
- label: CPU
value: Z80-B
- label: SPEED
value: 5 Mhz.
- label: RAM
value: 64 KB expandable to 128 KB
- label: ROM
value: Unknown
- label: TEXT MODES
value: |-
64 columns x 16 or 32 lines for TRS-80 mode\
80 columns x 25 lines for CP/M mode (or a special LDOS mode)
- label: GRAPHIC MODES
value: None
- label: COLORS
value: Monochrome
- label: SOUND
value: Beeper
- label: SIZE / WEIGHT
value: Unknown
- label: I/O PORTS
value: F.D.D. interface (3.5'', 5.25'' and 8''), H.D.D. interface (ST-406/512), Parallel Centronics, 2 x Serial RS-232C
- label: OS
value: LDOS 5.3.1, CP/M-80 version 2.2 (60K) and 3 (CP/M Plus)
- label: POWER SUPPLY
value: Built-in power supply
- label: PRICE
value: $820
tabs:
- photos
- adverts
photos:
- title: LOBO PRICE LIST
subtitle: ''
text: December 1982 price list
image: null
adverts:
- title: US AD. MAY 1983
subtitle: ''
text: |-
Advert said:
Before you start hunting from store to store for the ideal microcomputer, consider this: You won't find it.\
That's because the world's most versatile micro is available only from the manufacturer. It's Lobo MAX-80 And, dollar for dollar, feature for feature, there isn't another system that even comes close....
image: null
comments:
- author: Jim Wirth (Eugene, Oregon)
date: Thursday 10th January 2013
text: Back in the early 80''s, I traded a S/W 357 revolver for my jewel. It had 4-8", 4-5", a 3.5", and lastly a 3 mb Hardrive. It came with a GE Line Impact Printer. I loved it, and it was fun to learn Basic, CPM and some CPM3 on it. The Amber monitor was eaiser to read for extended time and there is nothing negative I can say about the unit. It worked perfect, was easy to fix, reprogram and I hope the fellah I sold it to, got as much use out of it as I did. That is when I went to MS-DOS permanently. I have very fond memories of those times.
- author: Craig Seaton (USA)
date: Thursday 27th September 2012
text: I still have one of these in the bat cave. last boot from floppy 2010. Ran CP/M, LDOS.
- author: William Barnhill (Rock Hill, SC)
date: Friday 6th September 2002
text: I remember this being the first PC I ever came in contact with.. The loud keys, the lovely green phosphor screen... ah, those were the days. :)
oc_id: 625
source:
url: https://web.archive.org/web/20230604041049/http://www.old-computers.com/museum/computer.asp?c=625
date: '2023-06-04'
---
Max-80 has been, along with the [LNW-80](/museum/lnw-research-lnw-80/), one of the two major [Tandy TRS-80 Mod. III](/museum/tandy-radio-shack-trs-80-model-iii/) compatible computers.
It could run LDOS TRS-80 software three times faster. Nevertheless numerous internal differences made it incompatible as far as hardware was concerned: serial and parallel ports, disk interface and no tape connector.
The system also ran CP/M operating system. the early versions were shipped with 2.2 version, next ones with version 3. It could accept any 5" or 8" disk units of any capacity, including the new and rare (at that time) Sony 3.5" units.
---
More information by **Clarence Perry**:\
I purchased a Max 80 in 83 with LDOS. The Max 80 did not have a boot rom like the TRS80. It was basically a CPM machine which didn't require much in ROM and loaded everything from disk.\
LDOS for the MAX 80 had a version of the model 1 basic rom as a disk file which had to be loaded into low memory during boot. My hat is off to the guys who wrote & documented LDOS because it still stands as one of the finest pieces of computer documentation I have seen.\
I did some assembler work on the Max80. I posted a task switcher on Compuserve that switched between different LDOS sessions running different applications with a key combination. The source was there also. It was pretty easy to do due to the memory arrangement. That was also enough of a taste to decide I never again wanted to do assembler.