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28 March 2019, 18:55
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#1 |
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Zone Friend
Join Date: Apr 2006
Location: Gothenburg/Sweden
Age: 48
Posts: 344
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"Data Cache Emulation" configuration not saved(?)
This option doesn't seems to be saved with the configuration (or the UI isn't refreshed or something). I keep enabling and saving the config but this checkbox keeps getting cleared.
I'm using WinUAE 4.1.0 (2018.12.05) 64bit. Am I doing anything wrong? |
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28 March 2019, 19:50
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#2 |
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WinUAE developer
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 49
Posts: 26,534
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Perhaps you have UAE expansion(s) enabled? Data cache emulation gets disabled if any UAE expansion is enabled and UAE boot rom is not in indirect (slow) mode.
Check if Error button appears in GUI (next to OK button) |
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29 March 2019, 21:25
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#3 |
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Zone Friend
Join Date: Apr 2006
Location: Gothenburg/Sweden
Age: 48
Posts: 344
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Errorlog says "Data cache emulation requires Indirect UAE Boot ROM", so what's this?
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30 March 2019, 14:25
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#4 |
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WinUAE developer
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 49
Posts: 26,534
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Thats it.
Reason is very simple: big part of UAE expansion code is in host side and directly reads/writes to Amiga address space, bypassing possible data cache or MMU remapping (and because they run in separate threads, it can't modify CPU emulator status). "Indirect" does extra round trip to Amiga side and back when accessing memory as a (slow) workaround. |
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30 March 2019, 15:49
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#5 |
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Zone Friend
Join Date: Apr 2006
Location: Gothenburg/Sweden
Age: 48
Posts: 344
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Not sure I got all that.
 Can I fix this?
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30 March 2019, 19:01
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#6 |
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WinUAE developer
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 49
Posts: 26,534
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If you really want to enable data cache emulation, you have two options:
a) disable all UAE expansions and only use hardware emulation expansions (like A600/A1200/A4000 built-in IDE, A590, PicassoIV etc..) or b) change uae boot rom to indirect mode. |
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