Latest smartupdate and autocycles adjustment patch.

Original dosbox 0.63 with Full core produces the same error. Other cores works well.

To Gulikoza: My modifications to your timesync need to be improved. I am trying to get dosbox running at max without bothering with cycles. In your timesync patch it is needed to set cycles to high value. But if cycles value is very high dosbox becomes overloaded and slow. Therefore manual cycles …

GVFM works fine with my latest version.

set timesynched=false

Number of cycles are automatically adjusted depending of CPU load.

It works fine for me. Maybe some orther setting in dosbox.conf affects the patch. Try to use default dosbox.conf and add needed entries to activete patches.

I attached dosbox 0.63 binary with smart screen update and coreswitch patches. Add the following lines to your dosbox.conf Copy code to clipboard 1 [render] 2 smartupdate=true 3 4 [cpu] 5 cycles=100000 6 timesynched=true 7 showcycles=true

The patch does not do partial screen updates. It can be implemented too, but requires much more work. By the way, it is recommended to use tymesync patch from Gulikoza to get dosbox running at maximum possible speed.

I uploaded modified patch to sourceforge. I hope it will be useful.

Hi all, Here is a patch which adds an option to update dosbox screen only if its contents was changed. This is very useful for old computers/video cards. But modern systems can benefit from this patch too. To enable smart screen update add the following line to dosbox.conf : [render] smartupdate= …

Currently I placed a memory range check in write to memory functions. When a program writes to frame buffer memory and value to be written is differnt from existing value a flag is set. In screen update function this flag is checked. If the flag is set - screen is updated, if not - update is skipped …

I will try to collect all my changes, create patch and post it.

I confirm that modem is not working in 0.62 and 0.63. I have modem enabled in dosbox.conf I run BananaCom to test modem. The program can not detect modem. There are following lines in DOSBox debug window: Modem Sent Command: Modem Sent Command: When using DOSBox 0.61 modem works fine.