Micro Technology Unlimited MTU-130 / MTU-140

The MTU-130 was a 6502 based computer released by Micro Technology Unlimited in 1981. The base system supported 480×256 B&W graphics, 80 Kbytes of RAM, digital audio/speech and included a light pen. An additional 256 Kbytes of RAM could be added as part of a 68000 co-processor card upgrade allowing up to 336 Kbytes of RAM accessible to both the 6502 and 68000 processors. A Z-80 co-processor card and CP/M were available as well. The system required the use of a disk to run as no OS was installed in ROM. The disk operating system was known as CODOS, Channel-Oriented Disk Operating System, and supported 1 or 2 drives and treated all devices as a file.

The MTU-140 was a later model that included drives and a monitor in an “all-in-one” case configuration.

Reading and writing the following MTU-130 / MTU-140 disk types is supported:

File System support for the following MTU-130 / MTU-140 operating systems is available:

The following disk image formats are supported.

An 8“ drive that supports double sided/double density.

8”

The MTU-130 / MTU-140 supported up to four 8“ single or double sided, double density floppy drives using a standard Shugart compatible connection. Disks were 77 tracks of 26 sectors and 256 bytes per sector.

Useful for image verification.