> > That's the info I found on the net from a 11/750 FAQ:
> >
> > "National Semiconductor Memory Systems: 1Mb memory boards. These
> > boards have PWB 551109464-002 B
> > PWA 980109464-001 D
> > etched on them. They have a push-button switch for disabling the
> > board, and a spare memory chip in a socket on the board. Board has
> > green and yellow LEDS, which should normally both be on. Disabling
> > the board causes the yellow LED to go out, and the red LED on the
> > L0016 to come on, indicating bad memory configuration."
>
> Those almost certainly aren't UNIBUS memory boards, but are
> 11/750-specific boards.
Thanks for this information, Patrick.
I guess, I'll have to wait for such a VAX, I haven't one yet ;-)
Currently, I'm setting up my 11/24.
It comes with an RL02.
Yesterday, I worked on it a bit, checking grant and bus continuity, everything's fine now.
I found out the bootstrap adress for the RL02 (BOOT Proms are located on the Unibus Map Module (KT24)) and gave it a try,
with the RL02 disconnected.
No problems with typing in digits with the VT420 terminal.
This morning, the 11/24 apparently don't accepts commands from the terminal, why ?
On the CPU-Board, the CLK-LED is always illuminated, even when I press the Boot-button. Then, the RUN - und the PROC-LED
turns on for a moment, that's all.
Yesterday, when I typed in the bootstrap adress of the diagnostics-PROM, the 1 - LED turned on.
The 0 - LED always remained off.
Today, no typing in is possible.
When I press the boot-button, I obtain something like _at_000002
I need to know the meanings of the LEDs on the CPU-Board.
Can anyone give me some help ?
In the Maintenance-Card, the functions of the LEDs are described but it doesn't appear to be on the net somewhere...
Thanks alot in advance !
Pierre
__________________________________________________________
Mit WEB.DE FreePhone mit hoechster Qualitaet ab 0 Ct./Min.
weltweit telefonieren!
http://freephone.web.de/?mc=021201
Received on Wed Dec 29 2004 - 01:56:30 GMT