• Please review our updated Terms and Rules here

The MOTOROLA VME, EXORciser and MicroModules Thread (6800, 6809, 68K)

The board is M68VECPU100, I can get photos tomorrow. The EEPROMS are 2532, I don't currently have any way to dump, but may be able to sort something out later.
It looks like there is a 16DIL PROM on the board at U44 - this has been replaced with what looks like a vendor's chip, the original with printed label was bagged and included with the board.
The MVME101 looks close.
Disk controller- there were only three boards in the frame when I got it. CPU + 2x DRAM
 
marcopolo said:
Hi,

Does anyone know this Motorola HDD/FDD controller?
Designed by Motorola Germany
WDC on the silkscreen stands for Winchester Disk Controller, not Western Digital Corp.
Click to expand...
Given the WD Winchester disk controller chips on that board that could go either way.
 
MV68VECPU100
 

Attachments

  • ME68VECPU100-1.jpg
    ME68VECPU100-1.jpg
    800.1 KB · Views: 22
  • ME68VECPU100-2.jpg
    ME68VECPU100-2.jpg
    771.6 KB · Views: 22
Nice photos, thanks!
I confirm that it would be very interesting to dump the 4 EPROMS.
The 2 “BOOT” could be an OS-9 boot.

I asked another friend, he doesn't have the EPROMs but he has this:
User's Guide Second Edition December 1981, including schematics.
He promised me some time ago that he would scan it, which will be done, but probably not for several months.
 
Last edited:
Hello everyone,

I am looking for a SMD disk controller:
Motorola MVME360 or Interphase V/SMD 3200
If you have one, please let me know.

Thanks,
Marc
 
This is what came with the boards. There was no 8 inch floppy or controller but it may have been removed before I got it. I'm sure there was a hard drive, odd as it may seem, but no controller.
Original address decode PROM U44.
I have no idea what XA8 is.
 

Attachments

  • 8Inch.jpg
    8Inch.jpg
    135.7 KB · Views: 15
Google says that IS-68K is a 68K DEC Qbus board which corresponds to the brand of diskette.
Perhaps this diskette doesn't fit your system?
Real-Time Systems (disk label) is the company behind the Lynx real-time operating system.

Why are you sure there was a hard disk?
 
I removed a HD from the case. I did not keep it and have no recollection of an interface board or what connexion cable was present.
It could be the 8 inch floppy does not fit the system.
 
Weird stuff.
I'm looking at the empty backplane. The meter reads about 6 ohms across the +5 and 0V pins on the supply in sockets, either meter polarity. There are some Dale 330/470 ohms SIL terminations at both ends and between these some 2 pin devices as yet unidentified - they are across the 5V rail and marked K2K 103 on one side and 8037 on the other (date code?) pssibly transorbs which have failed or caps?

The DIN three row connectors have wire wrap spills on the back - but none are soldered into the PT holes, but it is possible they are intended to be a press fit into the PT holes, the square pin is slightly wider where it enters the hole

Hooked up to a bench supply set at 5V/200ma and it limits,

I'll have to remove all the 2 pin parts.
 
You must log in or register to reply here.
Back
Top