Hi Paul, question about Paku Paku (pacman clone)
and the "text graphics" mode used there:

> The previous was with under VirtualBox [that I believe does not handle
> color palette right]
> 
> And the newer results were with QEMU.

Does the game fill the whole window with BOTH
virtualbox and qemu for you? Because it only
fills the upper half in dosemu2 at the moment.

The docs of the game say it works in CGA, EGA,
VGA and Tandy or PC JR and has been working on
the original CGA card at "Retrochallenge 2011
Winter Warmup" It has a command line option:

"/safe Do not reprogram CRTC on EGA/VGA. Better
compatibility on oddball hardware, but has
some aspect ratio issues"

The used mode derives from 80x25 text mode by
changing to a 2 pixel tall font and all 0xdd
characters: If the font was 8x2 before, you can
get 160x100 "graphics" by selecting foreground
and background colors for all the characters.

In "safe" mode, because VGA has 9 character wide
fonts, you get slightly irregular "pixel" widths
and for EGA, 1/7 of the screen at the bottom will
stay blank.

The docs says EGA/VGA mode of the game use some
640x200 mode timings as starting point, not the
default 720x350 EGA text mode.

The game apparently has been unchanged since 2011.
Graphics mode details can be found in TXTGRAPH.PAS
(which has too few comments). License: Public Domain.

With PAKU /safe in DOSEMU2, the bottom 25% of the
window stay blank, 300 of 400 pixels are used. This
mode is 720 pixels wide in DOSEMU2.

With PAKU without options in DOSEMU2, the bottom
258 of 456 pixels stay blank, if I am counting the
pixels properly with "kruler". This mode is shown
as 640 pixels wide.

Regards, Eric



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