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Revert "[MIGRATED] Delete .\BUGS\Complex - Dope.txt"

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This reverts commit cf5f2a5a74.
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aybe
2020-10-17 02:08:53 +02:00
parent 4c9cff9b1f
commit 690e57c629
1 changed files with 29 additions and 0 deletions
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BUGS/Complex - Dope.txt Normal file
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"Dope" demo bugs (DOSBox-X's fault)
BUG: Noticeable pause of music at points where VGA BIOS is called to set video mode during demo
However, this pause also happens on real hardware if the BIOS does not use the IRQ for hard
disk access (tested on a Pentium MMX 133MHz with a CompactFlash card for a hard disk).
BUG: You can only run the demo once. Additional attempts log "illegal instruction" messages and
crash back to the DOS prompt. You must close and reopen DOSBox-X to run the demo again.
- I know for a fact that is not a feature of the demo. Having run it on real hardware, I know
the demo can be run again after the first time (though it is not reliable at reinitializing
the GUS to a known state).
- The debug messages from DOSBox-X are:
Warning: Illegal read from b66b1da, CS:IP 8: b66700a
DYNX86:Can't run code in this page!
Warning: Illegal read from b66b1da, CS:IP 8: b66700a
Warning: Illegal read from b66b1db, CS:IP 8: b66700a
141992554: CPU:CPU:66:GRP5:Illegal call 7
Warning: Illegal read from b66b1da, CS:IP 8: b66700a
Warning: Illegal read from b66b1da, CS:IP 8: b66700a
Warning: Illegal read from b66b1db, CS:IP 8: b66700a
- This apparently only happens if "private area size" is less than 16384, regardless of
"mainline compatible mapping" and "private area in umb" settings. Hm... is DOSBox
writing things beyond the block of private space it just allocated?