Hi JOP'ers, The issue has been solved. It was in fact not related to the garbage collector at all, but to a special case of the "invokespecial" instruction....
wolfgang, Good the hear that the issue has been resolved. Any insight as to how the issue was resolved, or even what the issue was? Marlon ... for ... cases ...
Marlon, The issue was that JOP crashed when executing a certain benchmark, usually after garbage collection. The first guess was "naturally" to blame the GC...
Greetings all, I am currently simulating JOP and am noticing the instruction x"EO" ("11100000") being executed throughout the simulation. Could anybody inform...
Hi Stacie, I cannot reproduce your problem. When I run the ModelSim simulation (with 'make sim') the bytecode instruction register is undefined till 1430 ns....
... Why not? Just add an I/O device to JOP that has a Wishbone slave interface. Depending on the amount of data you want to transfer a simple register can do...
Hi Lutz, ... ok, I never used the xram*.vhd for Simulation. I use the sim_*.vhd files under vhdl/simulation for the ModelSim simulation. Some of them read...
Hi Stacie, 0xE0 (224) is getstatic_ref, which does exactly the same as getstatic. The getstatic_ref, getfield_ref, putstatic_ref, and putfield_ref bytecodes...
Colleagues: I continue to make slow progress toward running JOP on my Spartan 3E starter Kit. I just downloaded the "blink" microcode and ran it successfully....
Hi Marlon, JOP'ers, Apologies for the uber-delay, I can't actually get to that stage yet. I'm still thoroughly stuck at something previous to this. I only get ...
Hi Chris, from the startup message in the output I can see that JopSim is configured with 1 MB. If you need 2.1 MB you should configure the simulation to more...
I've tried that, with up to 16 MB of RAM. But with the same error... ... From: java-processor@yahoogroups.com [mailto:java-processor@yahoogroups.com] On Behalf...
Thanks Martin, just sent you an email now. 9 MB attachment - let me know if or when it comes through :) Thanks! Chris ... From: java-processor@yahoogroups.com ...
Martin, Thanks for extending your helping hand and eye :). I am sending you a zip file including JOP and the memory controller. Let me know if you receive it...
Hi Jardel, a JTAG controller is not part of JOP. However, you can use Altera's SignalTap (or Xilinx's ChipScope) to debug logic. For Java code debugging there...
Colleagues: Does anyone have a recommendation for a bytecode assembler? Is Jasmin the only choice? I want to move the bootloader and initialization into the...
That's a nice idea. I was thinking about this several times ;-) Why not just use Java and javac? The restriction on bytecodes that are implemented in microcode...
The 1024-word restriction is the major consideration, but I do not want to drop support for Long or for anything else. For me, this is a purely theoretical...
Very interesting! So you plan a 12 JOP CMP system. Nice to hear that there is a current trend in JOP CMP. We had only a 8-way JOP running ;-) Reducing the...
I don't really "plan" a 12-JOP system, since I'm just playing around. I do want to generally improve the amount of processing capability and reduce the...
Hi there. I'm Steve Casselman, CTO of DRC Computer (www.drccomputer.com) and I'm wondering if there is any interest in someone developing a multicore version...
Hi, I am trying to get JOP up and running with a Xilinx Spartan3 starter kit. I have used the guide in the "Handbook" ch. 2.1.3 (spartan3 starter kit). I have...
Hi, but you reconfigure the FPGA before performing a second download, right? There is no reset on JOP to start over with the download. The many 'ttttt' are...
Hi, Thanks for your quick reply. I have a "real" seriel port in my laptop, but your answer made me think that I might had to look outside the JOP world :) When...
mmh, that sounds very familiar for me! Do you have a DELL notebook? I have the same issue on my DELL notebook, sorry for not mention it in my reply. When I...
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