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[PATCH 0/8] vga: improve emulation fidelity
From: |
Paolo Bonzini |
Subject: |
[PATCH 0/8] vga: improve emulation fidelity |
Date: |
Sun, 31 Dec 2023 10:39:10 +0100 |
This implements horizontal pel panning, which is used by games such as
the Commander Keen series, and also reimplements word and odd/even modes
so that they work in graphics modes; this mostly fixes Jazz Jackrabbit's
graphics.
There are still some issues with Cirrus VGA, and also Keen expects the
display parameters to be latched in ways that I don't fully understand
and that seem to differ between Keen 1 (EGA) and 4 (VGA). So there is
still a bit of tearing, but I have been sitting on these patches since
the Christmas holidays of 2014, so let's flush this first part.
Paolo
Paolo Bonzini (8):
vga: remove unused macros
vga: introduce VGADisplayParams
vga: mask addresses in non-VESA modes to 256k
vga: implement horizontal pel panning in graphics modes
vga: optimize horizontal pel panning in 256-color modes
vga: reindent memory access code
vga: use latches in odd/even mode too
vga: sort-of implement word and double-word access modes
hw/display/cirrus_vga.c | 28 +--
hw/display/vga-helpers.h | 121 +++++++++---
hw/display/vga.c | 418 +++++++++++++++++++++------------------
hw/display/vga_int.h | 18 +-
hw/display/vga_regs.h | 4 +
5 files changed, 347 insertions(+), 242 deletions(-)
--
2.43.0
- [PATCH 0/8] vga: improve emulation fidelity,
Paolo Bonzini <=
- [PATCH 3/8] vga: mask addresses in non-VESA modes to 256k, Paolo Bonzini, 2023/12/31
- [PATCH 1/8] vga: remove unused macros, Paolo Bonzini, 2023/12/31
- [PATCH 7/8] vga: use latches in odd/even mode too, Paolo Bonzini, 2023/12/31
- [PATCH 2/8] vga: introduce VGADisplayParams, Paolo Bonzini, 2023/12/31
- [PATCH 4/8] vga: implement horizontal pel panning in graphics modes, Paolo Bonzini, 2023/12/31
- [PATCH 5/8] vga: optimize horizontal pel panning in 256-color modes, Paolo Bonzini, 2023/12/31
- [PATCH 6/8] vga: reindent memory access code, Paolo Bonzini, 2023/12/31