In the meanwhile Jack Rubin did help me a lot to get
GTTY running again on a modern PC.
And Lou helped me a lot with his
H803 which I turned into H851s
So my Plessey RK8E clone now has brand new H851 blocks on it:
View attachment 48652
Time to test...
Well I've tried to test the Plessey controller which was bought incomplete. So it was in unknown state.
I ran dhrkae.sv on the service image within OS8. And immediately I got:
If I pulled out the controller I got a slightly different message.
So it seems to detect the board but it quits almost immediately as well.
To be sure I wanted to toggle in the rimloader, load the binloader and run the
test from a papertape image which I downloaded from Vince his website.
After toggeling in the RIM loader somehow I made an error myself and gave
the start address of 7777 instead of the 7756. Suddenly text like this showed up.
Now that is weird! I haven't loaded any papertape image yet. This was still in core.
Within a few seconds this message showed up in the disk server:
Probably the code ran into a part of OS8 in core, no idea what happend...
Next try went better... Rim loader, bin loader and loaded dhrka-e.bin
After starting the test the system ran for about four minutes and then:
WooHoo! So don't run tests within OS8 disk server... This might fail...
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The postman from China is letting me down a bit. I'm waiting for three weeks now on the M993 PCB's.
At this point I can't get any further... I hope the boards are coming soon...