I just noticed that development for this incredible core continues in https://github.com/scrameta/Atari800_MiSTer which made my day! 
But I see there were many fixes made during the last months that have not yet been present in any release.
@foft Do you have builds with these changes? I believe it's possible to have Github do automatic builds as it does for other cores.
This is forked from the Mister one, maybe it's not quite ready to be released. Or the updates to be put in the official core.
If anyone can compile it, we could find out what it's like though! Thanks.
I did a compile run two weeks ago but only for the 800 core. Named after last commit and not tested yet. Try yourself with fun!
While trying to compile the 5200 core (which didn't because of an unresolvable error), I've found that it looks like there is missing something, although it compiles perfectly, but a warning was thrown out: Tcl Script File rtl/t65/t65.qip not found
Well, this must be the CPU part and imho absolutely necessary, so I added it and recompiled the 800 core, which is attached to your satisfaction 
At least one commit:
Use internal rather than external wsync logic
wsync is used for Atari's "display list" = how they are building the screen to show. See below for references:
https://playermissile.com/dli_tutorial/
https://forums.atariage.com/topic/20116 ... ne-issues/
RealLarry wrote: ↑Sun Nov 10, 2024 5:26 amWhile trying to compile the 5200 core (which didn't because of an unresolvable error), I've found that it looks like there is missing something, although it compiles perfectly, but a warning was thrown out: Tcl Script File rtl/t65/t65.qip not found
Well, this must be the CPU part and imho absolutely necessary, so I added it and recompiled the 800 core, which is attached to your satisfaction
Great work, RealLarry! And many many thanks for this, I like to keep up with this core development as the Atari 800 was my first "own" computer and holds an special place on my heart.
What's with the 5200 core? Maybe it's not completely updated?
Looks like, yes. The original error when compiling was
Info (12021): Found 2 design units, including 1 entities, in source file rtl/atari5200top.vhd
Info (12022): Found design unit 1: atari5200top-vhdl File: /tmp/x/Atari800_MiSTer/rtl/atari5200top.vhd Line: 69
Info (12023): Found entity 1: atari5200top File: /tmp/x/Atari800_MiSTer/rtl/atari5200top.vhd Line: 14
Info (12021): Found 1 design units, including 1 entities, in source file Atari5200.sv
Info (12023): Found entity 1: emu File: /tmp/x/Atari800_MiSTer/Atari5200.sv Line: 22
Error (10349): VHDL Association List error at atari5200core.vhd(292): formal "HBLANK" does not exist File: /tmp/x/Atari800_MiSTer/rtl/common/a8core/atari5200core.vhd Line: 292
Info (144001): Generated suppressed messages file /tmp/x/Atari800_MiSTer/output_files/Atari5200.map.smsg
Error: Quartus Prime Analysis & Synthesis was unsuccessful. 1 error, 0 warnings
Error: Peak virtual memory: 1000 megabytes
Error: Processing ended: Mon Nov 11 13:32:20 2024
Error: Elapsed time: 00:00:11
Error: Total CPU time (on all processors): 00:00:29
Error (293001): Quartus Prime Full Compilation was unsuccessful. 3 errors, 0 warnings
Error: Flow compile (for project /tmp/x/Atari800_MiSTer/Atari5200) was not successful
Error: ERROR: Error(s) found while running an executable. See report file(s) for error message(s). Message log indicates which executable was run last.Error (23031): Evaluation of Tcl script /opt/altera/17.1/quartus/common/tcl/internal/qsh_flow.tcl unsuccessful
Error: Quartus Prime Shell was unsuccessful. 10 errors, 0 warnings
Error: Peak virtual memory: 767 megabytes
Error: Processing ended: Mon Nov 11 13:32:21 2024
Error: Elapsed time: 00:00:15
Error: Total CPU time (on all processors): 00:00:31
I found some references of "HBLANK" in the updated atari800core.vhd. atari5200core.vhd wasn't updated so I took over (so far and possible) the patches from 800 to 5200 and voila, it is compiling fine. Find it attached. Totally untested and you'll run it at your own risk 
Great to hear. Job done. Always at service.
Anything else I should compile? 
Not that I know, but I will humbly ask you for new builds if I see @foft update the cores again, if you don't mind!
I declare you our Atari 8bit cores builder! 
Don't hesitate to ask! Proud to be "the Atari 8bit cores builder" for you guys. I'm an Atarian since 1981 'til today and I'm even prouder to be one since I built my own 1088XEL.
But, alas, "I can write programs" but I'm no coder, even not with VHDL etc 
It may depend on one's age. Never had more than an Atari800 and a 130XE until the beginning of 21. century, were I got old and "rich" enough to collect all that stuff I always wanted to have. But never had a 5200 which was available in the US only if I'm right.