I noticed that the DMC-11 was added to simh.

It seems to have some support for the DMR-11, but I haven't tried to determine how complete that is.

TOPS-10 has a driver for the DMR (but not the DMC). So it might be worthwhile to get the DMR configured with the KS simulator. Connect it to a DECnet routing emulator that also has an ethernet adapter (probably a VAX), and TOPS-10 would be on the network. Also, connect two TOPS-10 systems with a DMR-11 & you can run ANF-10, which is TOPS-10 native networking. (And a -10 with the right -11 & you can run the TOPS-10/IBM RJE gateway.)

http://bitsavers.trailing-edge.com/pdf/dec/unibus/EK-DMR11-TM-002_Jan81.pdf is the DMR tech manual. 3.5.3 is important; the driver checks for micro-diagnostic result codes.

TOPS-10 never supported the DMC-11; I'm pretty sure it would NOT work. I wrote the DMR-11 driver (d8rint.mac), which was officially unsupported, but I shipped it with the OS.

For TOPS-10, the DMR-11 bus address is 3764000 (uba 3, unibus 764000); the interrupt vector is 610. I never built a system with more than one, but the software should support up to 8 (10 bytes each for both CSR and vector). You do need to MONGEN to get a monitor with DMR (and networking) support.

Also of potential interest: DDT11 will run standalone on the KS10, and contains a pdp-11 simulator. I used this to run the PDP-11 DMR11 diagnostics on the KS10, from the equally unsupported (but working) RX20 floppy.

The supported networking device for both TOPS10 and TOPS20 was the KDP (KMC-11/DUP-11); this is the microprocessor from the DMC/DMR with loadable microcode that manages a DUP-11 via DMA over the Unibus. It's a rather unpleasant device...

One other note in passing; I noticed that the ks10 IO emulation (pdp10_ksio.c) claims that 4 UBA were architected, but only 2 were used (UBA 1 & 3). This is only partially true; UBA 2 was installed in quite a few systems, particularly systems shipped by the Computer Special Systems group with odd hardware. But also some adventurous customers.

--
This communication may not represent my employer's views,
if any, on the matters discussed.


Attachment: smime.p7s
Description: S/MIME Cryptographic Signature

_______________________________________________
Simh mailing list
[email protected]
http://mailman.trailing-edge.com/mailman/listinfo/simh

Reply via email to