MC-1 PDF has mstatus as 64 bits and fields (like SIE) that shouldn't be present

[james-ball-qualcomm]

[dhower-qc]

This is because the CRD generator is using the _64 arch definition. We need to create an architecture definition that corresponds to MC-1 and use that for generation.

[dhower-qc]

I've added a feature to create an architecture definition from a CRD. That fixes the length problem for, e.g., mstatus. However, things like SIE still show up because, while MC-1 mandates M-mode, it doesn't prohibit S-mode. How do you want to handle this?

[james-ball-qualcomm]

I like Ken's suggestion of showing all possible fields but making clear which ones are required for MC-1. Besides using colors like Ken suggested in the wavedroms, I'll also want to add the field descriptions to the Profiles and CRDs and then having some easy way to determine their presence would be useful since I'll either add that to the field descriptions or maybe have 2 lists (required for MC-1 vs. possible).

Hold on, the Profiles already show multiple profiles in one doc and I'd like the CRDs to have that too (just haven't done it yet). So, then the appendices would need to know what's possible for each profile/CRD in the spec which seems problematic. Any ideas?

[dhower-qc]

I can add colors to distinguish a field that is mandatory vs. optional (good idea @kdockser).

As for having multiple CRDs in the same document, we could generate the wavedrom for each CRD, compare them (they are just text), and display a single figure when they match and multiple when they don't.

[james-ball-qualcomm]

Sounds perfect.

[dhower-qc]

Look right?

[james-ball-qualcomm]

Cool. However, how are people supposed to know that red means not present (but defined in some ISA extension) and green means present in MC-1. Any possibility of making the red a pattern fill like below? Or make it grey matching the other grey (just with text in it vs. blank for existing grey) or change the other grey (the empty bit grey) to some other color?

[dhower-qc]

We are at the mercy of what wavedrom can render. There might be a way to import a color scheme, but you can see examples of the stock options here:

https://observablehq.com/collection/@drom/bitfield

[dhower-qc]

@kersten1, any insights on the wavedrom capabilities?