What's the correct aspect ratio I should be using as a config for a HAPP / VISION PRO 19" LCD arcade monitor for MAME Horizontal / Vertical games

[mahoneyt944]

@romstar my apologies, I mixed up the wording... you'll use one of these. Each one rotates the image 90 degrees, pick the one you need:

display_rotate=0
display_rotate=1
display_rotate=2
display_rotate=3

Then remove the # if front of:

disable_overscan=1

[Romstar]

OK FINALLY!! Figured it out (with the help from you guys).... Below is what I did hope this helps others:

Here's where my file was located and what I did :

Through access ssh the path is : /opt/retropie/configs/all/retroarch/config/MAME 2003 (0.78)

Within that folder I saw "MAME 2003 (0.78).opt" file

right clicking it & hitting edit brought up the following of my file:

mame2003_art_resolution = "1"
mame2003_brightness = "1.0"
mame2003_cheat_input_ports = "disabled"
mame2003_core_save_subfolder = "enabled"
mame2003_core_sys_subfolder = "enabled"
mame2003_dcs_speedhack = "enabled"
mame2003_dialsharexy = "disabled"
mame2003_display_artwork = "enabled"
mame2003_display_setup = "disabled"
mame2003_frameskip = "0"
mame2003_gamma = "1.0"
mame2003_input_interface = "simultaneous"
mame2003_mame_remapping = "enabled"
mame2003_mouse_device = "mouse"
mame2003_nvram_bootstraps = "enabled"
mame2003_rstick_to_btns = "enabled"
mame2003_sample_rate = "48000"
mame2003_skip_disclaimer = "enabled"
mame2003_skip_warnings = "disabled"
mame2003_tate_mode = "disabled"

I changed the bottom line to mame2003_tate_mode = "enabled" which ultimately resolved my issue. now The vertical game is finally displaying the way it should on my HAPP Vision pro monitor mounted vertical !! At some point I'd like to build a vertical only list of games and have the menu / retropi running exclusively in vertical mode.

[dankcushions]

@romstar said in What's the correct aspect ratio I should be using as a config for a HAPP / VISION PRO 19" LCD arcade monitor for MAME Horizontal / Vertical games:

Through access ssh the path is : /opt/retropie/configs/all/retroarch/config/MAME 2003 (0.78)

glad it's working! interestingly, the reason this file is in this location, and not updated correctly in /opt/retropie/configs/all/retroarch-core-options.cfg as it should do in retropie, is a side-effect of your /opt/retropie/configs/all/retroarch.cfg being non-default. specifically the setting
global_core_options = "false"
should be
global_core_options = "true"

i would encourage you to resolve this by replacing the entire /opt/retropie/configs/all/retroarch.cfg with /opt/retropie/configs/all/retroarch.cfg.rp-dist (if the latter doesn't exist you can generate it by updating retroarch via retropie_setup > manager packages > core packages > retroarch). or you could just change the one setting, but i would imagine there are other non-default settings hidden in there...

obviously after you've done this you'll have to make the same tate change via /opt/retropie/configs/all/retroarch-core-options.cfg

[Thorr69]

@romstar said in What's the correct aspect ratio I should be using as a config for a HAPP / VISION PRO 19" LCD arcade monitor for MAME Horizontal / Vertical games:

I changed the bottom line to mame2003_tate_mode = "enabled" which ultimately resolved my issue. now The vertical game is finally displaying the way it should on my HAPP Vision pro monitor mounted vertical !! At some point I'd like to build a vertical only list of games and have the menu / retropi running exclusively in vertical mode.

I knew it would change your life. I would not recommend trying to make the whole of retropie itself work in vertical mode yet, though. I stayed with my rotating monitor because rotating emulationstation causes performance issues. I believe it also became more difficult to rotate emulationstation on the Pi4 because the option was deprecated. I stayed with my Pi3b for my vertical MAME games for that reason and hope that a good solution for a fully vertical system presents itself later.