Search Posts:

KE11-E M7238 EIS Diagnostics

SHARE

Return to Threads

  KE11-E M7238 EIS Diagnostics by Bill Degnan - 02/02/2017 13:46
industrial/11 with frozen front panel after attempting to load UNIX without a working EIS controller card. The KE11-E Extended Instruction Set (EIS) is required for UNIX 6.


Up to this point I had not messed with using the optional EIS card, M7238, KE11-E in my 11/40 system testing. UNIX 6 requires this card, so I am going to test the card. Not sure if it works.

Here is the basic info for the controller:

KE11-E M7238 Extended Instruction Set EK-KE11E-OP-001

EK-KE11 E-OP
KE11-E/F USER MANUAL

EK-KE11E-TM
KE11-E/F TECHNICAL
MANUAL

MP-KE11-B
KE11-E MAINTENANCE
PRINTS

The manual says to cut the W1 jumper on the M7233 Decode card, which I did, as part of installation, plus attach the three ribbon cables between the M7238 and M7232.

When I run the system with the EIS card installed and the related jumpers, the system goes DC LO AC LO and I cannot do anything.

I may not be able to boot into XXDP+ to diagnose the problem. But I can try again.

I could not find any XXDP tests, so I put out a request on CCTECH and I was tipped to this page by Chuck Dickman:
http://www.chdickman.com...tes/my_diagnostics.html

In particular:
KE11-E (EIS) Option Tests
PDP-11/40 Basic CP Test ASH CKBI
PDP-11/40 Basic CP Test ASHC CKBJ
PDP-11/40 Basic CP Test MUL CKBK
PDP-11/40 Basic CP Test DIV CKBL
MUL-DIV Random Exerciser CQKA

NEXT: Put the card on a riser and test the components electrically (caps, etc).

Reply

Resources:


Buy a Commodore Computer Poster

Popular Topics and FAQs


Past Issues:


Timex Sinclair 2068

This image was selected at random from the archive. Click image for more photos and files from this set.