Walter F.J. Mueller

The dstw flow updates the condition codes before the the last possible MMU abort. Example is the `ccwe = 1` in `s_dstw_def`. The condition codes are therefore changed when an...

The `s_idecode` prefetch logic checks only for tflag and int_pending, but not for pending MMU traps. If the instruction read of a RR instruction, like `ROR R0` or `ADD R0,R1`...

dasdls writes on Linux to stdin, does 'write(0,....)'

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I use `dasdls` under Linux. First I saw that two lines of the `dasdls` output can't be redirected to a file, they always show up in the controlling terminal. Only...

Vivado and RMII

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There are quite a few Ethernet MAC cores, but mostly in Verilog. I've a project written in VHDL, use GHDL, and therefore looked for a core written in VHDL, and...

DEUNA: buffer chaining not implemened in backend

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The DEUNA supports _buffer chaining_, an Ethernet frame can be stored in a set of chained buffers. 2.11BSD doesn't use this feature, it always uses buffers large enough for a...

The DZ11 device contains all modem control register bits. However, the backend currently does not implement any modem control functionality.

Nice example, but when it comes to `broadcast`, it leaves many questions: - the [original gist](https://gist.github.com/ninedraft/7c47282f8b53ac015c1e326fffb664b5) used broadcast and had a matching title. This example uses unicast. Is that by...

A job file stays currently open until the start of the next banner page is detected. Post processing commands (-c option) are therefore executed when the next job file is...