---
title: BRASCOM BR-1000M
categories:
- Computers
types:
- Professional Computer
origins:
- Brazil
years:
- '1982'
cpus:
- Zilog Z80A
params:
  name: BR-1000M
  image: /media/museum/photos/brascom_br1000.jpg
  company: /companies/brascom
  company_name: BRASCOM
  specs:
  - label: NAME
    value: BR-1000M
  - label: MANUFACTURER
    value: Brascom
  - label: TYPE
    value: Professional Computer
  - label: ORIGIN
    value: Brazil
  - label: YEAR
    value: '1982'
  - label: KEYBOARD
    value: Full stroke QWERTY keyboard with numeric keypad, 69 keys
  - label: CPU
    value: Zilog Z80A (4 MHz) or Z80B (6 MHz)
  - label: SPEED
    value: 4-6 Mhz
  - label: RAM
    value: 64 KB + 64 KB for each dumb terminal (up to 6)
  - label: ROM
    value: 6 Kb
  - label: TEXT MODES
    value: 25 lines x 80 char.
  - label: GRAPHIC MODES
    value: Yes, in last models
  - label: COLORS
    value: Monochrome monitor
  - label: SOUND
    value: Beeper
  - label: I/O PORTS
    value: S100 bus
  - label: BUILT IN MEDIA
    value: up to four 5.25'' or 8'' floppy disks, and optional 5 or 10 Mb Winchester hard-disks
  - label: OS
    value: CP/M, BR1000 (Same as Cromemco Unix OS)
  - label: POWER SUPPLY
    value: Built-in CPU
  - label: PERIPHERALS
    value: S100 cards
  forum_thread: 527
  oc_id: 533
  source:
    url: https://web.archive.org/web/20230608084711/http://www.old-computers.com/museum/computer.asp?c=533
    date: '2023-06-08'
---

The BR1000Ms were Brazilian professional computers.

The BR1000M's hardware was the same as [Cromemco's](/museum/cromemco-system-i-ii-iii/), and the so-called BR1000 operating system was in fact Cromix, a UNIX flavor designed to run on Cromemco's hardware.

Two models of the BR1000M were available: one with a Z80A processor at 4 MHz, capable of handling up to 4 dumb terminals, one of which was also used as the system console; and a "high end" model with a Z80B processor at 6 MHz, capable of handling up to 2 more terminals.

RAM size was one 64-KB system RAM board plus one additional 64-KB board for each terminal, all plugged into S100 slots. The first machines used 8-inch floppy drives, later upgraded to 5-1/4-inch units and, eventually, to 5- or 10-MB Winchester hard disks, keeping a floppy drive for data backup.

The picture shows a late-model (1985) terminal; that casing, designed by Brascom's industrial director (nickname Bubby), earned him a prominent design award. Unlike previous models, this one was capable of displaying graphic characters such as lines, corners and blocks.

In 1985, Brascom introduced a 6-MHz Z80B-based microcomputer running the CP/M operating system. This computer, called Foxy, was equipped with the above-mentioned late-model encasing and two external 5-1/4-inch floppy drives. This product never quite made it, due to Brascom's increasing financial problems and its final closedown in about 1986.

Thanks to **Claudio Chagas** for all this information.\
Picture : [Club Old Bits](http://orbita.starmedia.com/~cobit/)