Open xolod79 opened 5 years ago
This is not something I'll be able to take on in the short term. I've got too many other projects on the go at the moment. Also, I don't have any experience of this CPU, and no systems that use it. So that's going to make it hard as well. Sorry!
(I'll leave this issue open in case someone else wants to tackle it)
Thanks for the answer. If it will be interesting. Here are some articles on the second model of this CPU. https://hackaday.io/project/67369/logs?sort=oldest
@xolod79 , I would be interested in trying to add another CPU core to David's existing codebase in this direction... My cpu is a DEC T-11 is a tad different but in the same 'family'... the soviets cloned the T11 as the KE1807VM1 - https://en.wikipedia.org/wiki/DEC_T-11
and the core I found which might be a template is here.... https://opencores.org/projects/w11
Some of the challenges would be that these are a 16-bit data bus so Im not sure where the conflicts would arise with AtomBusMon
hello @jessaskey! I like your interest in porting DEC T11 to Atom Bus! I have a Soviet computer Electronics MC0515 with KR1807VM1 as a CPU. http://www.leningrad.su/museum/show_calc.php?n=267&lang=0&test=0 And I can test the results obtained if you wish. Yes, of course, you will have to expand the work of the respected @ hoglet67 to integrate the 16bit CPU DEC, but I suppose that there should not be something very complicated there. I also want to draw your attention to the project https://github.com/1801BM1/cpu11 where, using DECAP and reverse engineering, accurate transistor circuits and Verlog LSI-11 and original Soviet PDP-11 CPUs were obtained. Also the author of the project will soon complete the DEC F-11.
Just to put this link here for reference... here the best source for T-11 datasheets... http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/pdp11/t11/
when I have time, I will start looking at this and how it might fit onto an EEPIZZA Spartan, then start trimming the above core down.
Thank you for a very interesting project! I want to ask you whether you can add support for CPU 1801BM1 in your project. There is a working model of it https://github.com/1801BM1/cpu11/blob/master/readme.md with configuration for Xilinx devboard I think that you can transfer it to the GODIL board quickly. I understand that adding debugging tools is much more difficult. But perhaps gradually it can be done by joint efforts. If you are interested, I can send you the original of this CPU.