PEL panning on EGA cards missing feature #3922
Description
What happened?
I recently discovered EGA cards update the PEL panning register (0x03C0 0x13) every scanline. This feature is not implemented on the last release (4.0.1).
You can use Beverly Hills Cop to test:
https://youtu.be/QuzGlNWsLAA?t=63
Also I made this little program that loads an image and changes the PEL register every scanline:
scanlines.zip
This is implemented on Dosbox-x, also I read (at forum.vcfed.org) some VGA cards can do it, like Paradise PVGA1A.
Configuration file
[General]
vid_renderer = qt_opengl3
video_fullscreen_scale = 2
video_gl_vsync = 1
window_remember = 1
dpi_scale = 0
video_filter_method = 0
[Machine]
machine = pc1640
cpu_family = 8086
cpu_speed = 8000000
cpu_multi = 1
cpu_use_dynarec = 0
time_sync = local
fpu_softfloat = 0
cpu = 1
mem_size = 640
[Video]
gfxcard = ega
[Input devices]
mouse_type = none
[Sound]
sndcard = adlib
fm_driver = nuked
[Network]
net_01_link = 0
net_02_link = 0
net_03_link = 0
net_04_link = 0
[Storage controllers]
hdc = xtide
cassette_mode = load
[Hard disks]
hdd_01_parameters = 63, 16, 126, 0, ide
hdd_01_fn = C:/MISTER/PCXT_MiSTer-main/SW/PCXT_CGA_Tandy_2.4.img
hdd_01_speed = ramdisk
hdd_01_ide_channel = 0:0
[Oak OTI-077]
memory = 256
[Floppy and CD-ROM drives]
fdd_01_type = 35_2hd_ps2
fdd_01_fn = C:/Users/David/Desktop/DISK_144.img
fdd_02_fn = C:/Users/David/Desktop/DISK_320.IMG
[Monitor #1]
window_coordinates = 343, 214, 398, 249
[Monitor #2]
window_coordinates = 0, 0, 0, 0Operating system
Windows 10
CPU
Intel i5-6500T 2.50GHz
86Box version
4.0.1
Build architecture
Windows - x64 (64-bit)
Build type
- New recompiler
- Debug build
Download source
Official website (Jenkins, GitHub)
Additional context
No response