website/content/museum/brascom-br-1000m.md

title, categories, types, origins, years, cpus, params

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

The BR1000Ms were Brazilian professional computers.

The BR1000M's hardware was the same as Cromemco's, 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