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| xfxf | mithro: i ordered one, assume they'll be available for retail later (albeit more expensive)? | 01:05 |
|---|---|---|
| xfxf | ordered one with the XC7A50T too as IIRC you said get that - assume just means we can do more interesting things with it as more grunt | 01:06 |
| nancy98[m] | CarlFK: ping ? | 02:46 |
| CarlFK[m] | nancy: pong. What's up? | 02:48 |
| nancy98[m] | Hello ! I was trying | 02:49 |
| nancy98[m] | To connect numato opsis | 02:49 |
| nancy98[m] | I wonder , VGA to HDMI doesn't work ! Color bars is the test to observe its working | 02:51 |
| CarlFK[m] | Try 1024 768 | 02:54 |
| CarlFK[m] | Mode list | 02:54 |
| CarlFK[m] | Then mode 6 I think | 02:54 |
| nancy98[m] | Lemme come up with it ! | 02:56 |
| xfxf | mithro: i just realised i have a completely seperate project that had a problem which is entirely solved by the netv2. might order more :P | 03:01 |
| xfxf | it'll probably end up in a rally car... lets hope it survives :P | 03:01 |
| xfxf | i assume the real shipping date is actually <12 mo away... | 03:03 |
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| shivm28[m] | shorne: How's a watchpoint different from breakpoint in run control debugging? | 15:04 |
| shivm28[m] | The OR1K doc mentioned that a watchpoint do not interfere with the execution of the program-flow except indirectly when they cause a breakpoint. | 15:06 |
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| mithro | cr1901_modern: ping? | 16:32 |
| cr1901_modern | mithro: Pong | 18:41 |
| CarlFK | nancy98[m]: I'm in an out - in an hour or so I'll have some time to help you with your Opsis | 18:56 |
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| shorne | shivm28[m]: thats not really true a watchpoint will stall the CPU | 21:41 |
| shorne | Btw: please read the pdf doc not the or1k.html doc (https://openrisc.io/architecture) | 21:42 |
| tpb | Title: Architecture - OpenRISC (at openrisc.io) | 21:42 |
| shorne | Anyway, for breakpoints openrisc GDB handles them by placing a l.trap instruction at the location of the breakpoint in program memory. | 21:43 |
| shorne | (This allows for unlimited breakpoints) | 21:44 |
| shorne | For watchpoints we use hardware to watch for memory accesses. | 21:46 |
| shorne | Watchpoints do not interfere with the execution of the program-flow except indirectly when they cause a breakpoint. | 21:46 |
| shorne | ^ Thats from the spec (except when they cause a breakpoint) | 21:47 |
| shorne | Perhaps you can concentrate on Breakpoints first then Watchpoints if you have time. | 21:52 |
| shorne | FYI, this is the code for how arm64 supports watchpoints in hardware (it looks similar to openrisc on first glance) | 22:02 |
| shorne | https://github.com/openrisc/binutils-gdb/blob/or1k/gdb/nat/aarch64-linux-hw-point.c | 22:02 |
| tpb | Title: binutils-gdb/aarch64-linux-hw-point.c at or1k · openrisc/binutils-gdb · GitHub (at github.com) | 22:02 |
| shorne | shivm28[m]: but I would repeat, its probably better to start with breakpoints and inspecting/writing to registers + memory first. | 22:02 |
| shorne | think of watchpoints as extra credit, they are an order of magnitude more difficult I think | 22:03 |
| shorne | +if you can stall the CPU and write and read registers with the hardware you can support watchpoints with software | 22:06 |
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