Bull Micral 40

Bull Micral 40 Photo

More Images: Image1 Image2 Image3

It was given to me by the teacher of my high school.

Hardware

Computer
AT Compatible
CPU
Intel R80286-8, L6500325
Coprocessor
None
BUS
AT ISA16
Memory
640Kb
Video
Hercules Graphics, integrated in mainboard.
Disk Controller
Western Digital (WDC'85) WD11C00C-JU, integrated in mainboard Supports two floppies and two MFM HDs.
Floppy Drives
Hard Disk
Seagate Model ST-225 - 21 Mb - MFM
Port Controller
Offers a Serial (16450) and a Parallel Port, integrated in mainboard.
Serial Ports
Address UART Speed Format IRQ
COM1 03F8 16450 2400 8N1 4
Parallel Ports
Address IRQ
LPT1 0378
Keyboard
101 Keys Support, DIN Connector
Power Supply
220V, 50Hz, 1A
CMOS Battery
Two 1.5V AA Batteries

Mainboard configuration

As the video card is integrated in the mainboard, the computer has a switch in its back that lets you choose MONOCHROME or COLOR video output.

Software

BIOS
BIOS MICRAL 286, VERSION T1.1. 02/03/87
Operating System
Minix 2.0.0
Drives

CMOS configuration

You need a special boot disk for entering CMOS configuration. This is the image of the floppy (360Kb): Image. There were some CRC errors when dumping it, but the disk works; then the image might work too.

The CMOS Setup Disk offers the options in 4 languages: ENGLISH, GERMAN, SPANISH and ITALIAN.

The disk offers many options about displaying/modifying CMOS RAM contents.

Floppy A
360K, 5 1/4" floppy drive
Floppy B
None
Hard Disk 1
Type 002
Hard Disk 2
Not Present
Memory Expansion
0K
Arithmetic Coprocessor
Not Present

FILES

These files can give more detailed information about the computer and its configuration, and also some benchmarking.

Details

It may have a problem with its internal monochrome video card, because a column in each char fails. Concretely, the 2nd column of each char is wiped (black). I can't remeber if it happened in the first time I turned the computer on, because I used it with a VGA ISA16 Card.

Started 04/08/2001 / Updated 2002-03-16 23:16:26.000000000 +0100


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Viric's Web Site / Webmaster: viric / Started 03/08/2001 / Updated mié sep 17 01:30:41 CEST 2003