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.
主要参数编辑本段回目录
NAME | BR-1000M |
MANUFACTURER | Brascom |
TYPE | Professional Computer |
ORIGIN | Brazil |
YEAR | 1982 |
KEYBOARD | Full stroke QWERTY keyboard with numeric keypad, 69 keys |
CPU | Zilog Z80A (4 MHz) or Z80B (6 MHz) |
SPEED | 4-6 Mhz |
RAM | 64 KB + 64 KB for each dumb terminal (up to 6) |
ROM | 6 Kb |
TEXT MODES | 25 lines x 80 char. |
GRAPHIC MODES | Yes, in last models |
COLORS | Monochrome monitor |
SOUND | Beeper |
I/O PORTS | S100 bus |
BUILT IN MEDIA | up to four 5.25'' or 8'' floppy disks, and optional 5 or 10 Mb Winchester hard-disks |
OS | CP/M, BR1000 (Same as Cromemco Unix OS) |
POWER SUPPLY | Built-in CPU |
PERIPHERALS | S100 cards |