Atari 800

[retrobrahhh]

I keep getting the error I need to use a real Atari 800. My files are xex. Anyone get Atari 800 working?

[Modern Retro Gamer (UK)]

Have you got the correct Atari 800 BIOS files in Retroarch's Systems directory? Worth checking the libretro docs for the A800 core (https://docs.libretro.com/library/atari800/#bios) and double check you have everything you need.

Also, double check in the cores Options menu in RetroArchs Quick Menu and make sure you have the right system selected for the BIOS/Games you are trying to run.

(The core works fine, at least with the 5200.rom BIOS for the 5200 games console - I use it for a couple of games)

[retrobrahhh]

all the bios files match the checksums. atari 800 games won't work. 5200 games do.

[TehSpoopyKitteh]

You have to go into the menu inside the emulator and set it to Atari 800 mode the first time you launch an Atari 800 game.

[/d/ZDW]

i put files in system dir, nothing happens, maybe checksums mismatch. i just edit .atari800.cfg with full pathnames and all start to work (and of course i set mode to 130XE)
but... Atari800WinPlus emul is much better.

[Fried Brains]

you need RetroArch\.atari800.cfg use notepad then copy, paste and save:

Atari 800 Emulator, Version 3.1.0
ROM_OS_A_NTSC=
ROM_OS_A_PAL=C:\Program Files (x86)\Steam\steamapps\common\RetroArch\system\ATARIOSA.ROM
ROM_OS_B_NTSC=
ROM_OS_AA00R10=
ROM_OS_AA00R11=
ROM_OS_BB00R1=
ROM_OS_BB01R2=C:\Program Files (x86)\Steam\steamapps\common\RetroArch\system\ATARIXL.ROM
ROM_OS_BB02R3=
ROM_OS_BB02R3V4=
ROM_OS_CC01R4=
ROM_OS_BB01R3=
ROM_OS_BB01R4=
ROM_OS_BB01R59=
ROM_OS_BB01R59A=
ROM_5200=C:\Program Files (x86)\Steam\steamapps\common\RetroArch\system\5200.rom
ROM_5200_A=
ROM_BASIC_A=
ROM_BASIC_B=
ROM_BASIC_C=C:\Program Files (x86)\Steam\steamapps\common\RetroArch\system\ATARIBAS.ROM
ROM_XEGAME=
ROM_400/800_CUSTOM=C:\Program Files (x86)\Steam\steamapps\common\RetroArch\system\ATARIOSB.ROM
ROM_XL/XE_CUSTOM=
ROM_5200_CUSTOM=
ROM_BASIC_CUSTOM=
ROM_XEGAME_CUSTOM=
OS_400/800_VERSION=AUTO
OS_XL/XE_VERSION=AUTO
OS_5200_VERSION=AUTO
BASIC_VERSION=AUTO
XEGS_GAME_VERSION=AUTO
H1_DIR=
H2_DIR=
H3_DIR=
H4_DIR=
HD_READ_ONLY=1
PRINT_COMMAND=lpr %s
SCREEN_REFRESH_RATIO=1
MACHINE_TYPE=Atari 400/800
RAM_SIZE=48
DEFAULT_TV_MODE=NTSC
MOSAIC_RAM_NUM_BANKS=0
AXLON_RAM_NUM_BANKS=0
ENABLE_MAPRAM=0
DISABLE_BASIC=1
ENABLE_SIO_PATCH=0
ENABLE_SLOW_XEX_LOADING=0
ENABLE_H_PATCH=0
ENABLE_P_PATCH=0
ENABLE_NEW_POKEY=1
STEREO_POKEY=0
BUILTIN_BASIC=0
KEYBOARD_LEDS=0
F_KEYS=0
BUILTIN_GAME=0
KEYBOARD_DETACHED=0
1200XL_JUMPER=0
CFG_SAVE_ON_EXIT=0
MIO_ROM=
BLACK_BOX_ROM=
PROTO80_ROM=
CARTRIDGE_FILENAME=
CARTRIDGE_TYPE=0
CARTRIDGE_PIGGYBACK_FILENAME=
CARTRIDGE_PIGGYBACK_TYPE=0
CARTRIDGE_AUTOREBOOT=1
CASSETTE_FILENAME=
CASSETTE_LOADED=0
CASSETTE_WRITE_PROTECT=0
RTIME=1
XEP80_CHARSET=
AF80_ROM=
AF80_CHARSET=
COLOURS_NTSC_SATURATION=0
COLOURS_NTSC_CONTRAST=0
COLOURS_NTSC_BRIGHTNESS=0
COLOURS_NTSC_GAMMA=2.35
COLOURS_NTSC_HUE=0
COLOURS_NTSC_GTIA_DELAY=26.8
COLOURS_NTSC_EXTERNAL_PALETTE=
COLOURS_NTSC_EXTERNAL_PALETTE_LOADED=0
COLOURS_NTSC_ADJUST_EXTERNAL_PALETTE=0
COLOURS_PAL_SATURATION=0
COLOURS_PAL_CONTRAST=0
COLOURS_PAL_BRIGHTNESS=0
COLOURS_PAL_GAMMA=2.35
COLOURS_PAL_HUE=0
COLOURS_PAL_GTIA_DELAY=23.2
COLOURS_PAL_EXTERNAL_PALETTE=
COLOURS_PAL_EXTERNAL_PALETTE_LOADED=0
COLOURS_PAL_ADJUST_EXTERNAL_PALETTE=0
ARTIFACT_NTSC=NONE
ARTIFACT_PAL=NONE
ARTIFACT_NTSC_MODE=0
SCREEN_SHOW_SPEED=0
SCREEN_SHOW_IO_ACTIVITY=1
SCREEN_SHOW_IO_COUNTER=0
SCREEN_SHOW_1200XL_LEDS=1
FILTER_NTSC_SHARPNESS=-0.5
FILTER_NTSC_RESOLUTION=-0.1
FILTER_NTSC_ARTIFACTS=0
FILTER_NTSC_FRINGING=0
FILTER_NTSC_BLEED=0
FILTER_NTSC_BURST_PHASE=0
SOUND_ENABLED=1
SOUND_RATE=44100
SOUND_BITS=16
SOUND_BUFFER_MS=0
SOUND_LATENCY=20