Since 2023, after replicating a working KIM-1 Rev D PCB, Eduardo has been replicating and enhancing MTU products.

See his github pages filled with MTU designs and his blog about his work.

An (incomplete, he adds regularly so check his pages) list of projects:

– KIM-1 Rev D replica (with keyboard and 6530 replacement board)
– MTU K-1008 Visable memory video card, with software
– MTU K-1013 Double Density floppy disk card (with CP/M-65 as operating system and ongoing work on CODOS)
– MTU Expansion card
– MTU Motherboard
– MTU RAM-ROM board
– port of CP/M-65 (David Given) to the KIM-1 with SD card, IEC interface and K-1013

Besides his github and blog pages the MTU projects are discussed on the forum64.de forum:
https://www.forum64.de/index.php?thread/142432-k-1013-floppy-disk-controller-replica/
https://www.forum64.de/index.php?thread/124855-instandsetzung-und-nachbau-eines-kim-1/
https://www.forum64.de/index.php?thread/137493-k-1008-visable-memory-card-replica-wip/

K-1000 Basic KIM-1 power supply, completely enclosed, terminals trip output +5V @ 1.2A, +12V @.01A regulated, +7.5V @.75A, +16V @02A

Used in the early KIM-1 MTU bus system and in the MTU-130/140 systems.

• 16K RAM
• Bootstrap ROM 256 bytes
• Double density controller uPD765
• DMA circuitry to allow direct data transfer
• Up to four 8 inch disk drives
• For MTU/KIM bus system

See also the CODOS page for the Operating systems CODOS V1 (KIM-1 etc) and CODOS V2 (MT-130/140/Accupath 1000)
Differences as found by Eduardo Casino between the MTU-130 Double Density Disk Controller and the original K-1013 Floppy disk controller:

• Add IRQ enable/disable to the control register, implemented with a 74LS175, instead of a 74LS109, to accomodate the extra bit.<.li>
• MTU-130’s 18 bit addressing support.
• Different boot rom contents, specific to the MTU-130.

	K-1013 Floppy disk controller Manual May 1979
	K-1013 Floppy disk controller Manual May 1980 Rev A
	MTU-130 Double density Disk Controller Manual February 1982
	MT-130 bootrom (dumped by Eric Wright) and assembler source (Eduardo Casino)

K-1013 from a MT-130, Eric Wright (Accupath 1000)

Backside of K-1013 floppy disk controller with much rework (Dave Plummer)

Floppy controller from a MT-130, David Williams

Eduardo Casino has made a replica PCB for the K-1013 Rev. D Floppy Disk Controller replica.
This aims to be a faithful replica of the K-1013 Floppy Disk Controller, an extension board for the KIM-1 designed by MTU in the late 70’s/early 80’s for interfacing with Shugart Associates compatible 8” and 5.25” FDDs.

The PCB is build by several users (see the thread at forum64.de) and found to be working fine. The operating system used is CP/M-65 by David Given.
And CODOS V1 is being reversed engineered, based upon CODOS V2.

Replica by Eduardo Casino

Replica by Eduardo Casino

Replica by Eduardo Casino

The MAME emulator can do quite a good simulation of the MTU-130.

What you will need is:

• A recent version of MAME
• A look at the MAME manual how to download and install
• Create folder MT130 in mame/roms
• The MT-130 ROMs to be placed in mame/roms/mt130 folder
• The disk images from the CODOS page to be placed in the mame/roms/mt130 folder

Now start MAME in GUI mode:

and select MT-130 from the available systems

and start CODOS 2.0

Note that some of the disk images are corrupt. CODOS V2 works!