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Language card softswitches and the gospel of Sather
- Subject: Language card softswitches and the gospel of Sather
- From: BLuRry <brendan.robert@gmail.com>
- Date: Wed, 5 Dec 2012 18:05:53 -0800 (PST)
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I'm trying to understand the explanation of the language card softswitches as described by Sather (5-27, 5-28). How many flip flops is he talking about and exactly what all resets these flip flops? I need to make sure I capture the complete state machine of these, because it seems I haven't gotten it quite right just yet.
I started finding Jace crash bugs in Airheart (ugh... again. I know I had it working fine before!) and then I found the rom self-test died with an error indicating an MMU bug. When I commented out the (likely incorrect) implementation of the dual-access nature of the flip-flops (meaning, I just changed them to work like single-access flip-flops), I found that the self-test passed. It didn't fix problems in Airheart unfortunately, and really it might have just made things worse overall.
How does AppleWin handle these? (you never hear about much software failing there. :-)
-B