platformio.ini

[env:m5stack-stamps3]
platform = espressif32@6.12.0
board = m5stack-stamps3
framework = arduino
lib_deps = 
    ; Cardputer library is in /lib folder
    m5stack/M5Unified@^0.2.11

monitor_speed = 115200
upload_speed = 921600

board_build.flash_mode = qio
board_build.f_cpu = 270000000L

monitor_filters = esp32_exception_decoder, colorize

build_unflags =
    -Os
    -Og
    -g
    -fno-jump-tables

build_flags =
    ; Race (NGP)
    -Isrc/ngp/race
    -DUSE_CZ80=1
    -DCZ80=1
    -DUSE_SDL=1
    -DDISABLE_WATCHDOGS
    -DNGP_USE_THREADED_COLORMAPPING ; Use a separate thread for color mapping to improve performance
    ;-DFRAMESKIP ; Enable frameskip, turned off for smoother performance
    ;-DNGP_INTERLACED ; Enable interlaced rendering mode for display output
    -DNGP_ONLY_RENDER_VISIBLE_LINES ; Disbales rendering of lines that arent visible due to scaling
    ;-DNGP_HW_INTERLACED ; Skip every other line that would normally be rendered by the emulator
    -DNGP_OPTIMIZATION_16BIT_READ ; 16-bit reads with alignment check for native bus transactions

    ; GWENESIS
    -DGNW_TARGET_MARIO=0
    -DGNW_TARGET_ZELDA=0
    ; -DGENESIS_NO_SOUND ; Disable sound support
    -UROM_SWAP
    -URAM_SWAP
    -Isrc/genesis/gwenesis
    -Isrc/genesis/gwenesis/bus
    -Isrc/genesis/gwenesis/cpus
    -Isrc/genesis/gwenesis/io
    -Isrc/genesis/gwenesis/sound
    -Isrc/genesis/gwenesis/savestate
    -Isrc/genesis/gwenesis/vdp
    -Isrc/genesis/gwenesis/cpus
    -Isrc/genesis/gwenesis/cpus/M68K
    -Isrc/genesis/gwenesis/cpus/Z80

    ; Oswan
    -DWS_SAVE_ENABLED=1
    -DWS_NO_SPLASH_SCREEN=1

    ; SNES
    -DNO_ZERO_LUT
    -DSNES_NO_SOUND
    -DSNES_NO_APU
    -DSNES_NO_BYTE2000
    ; -DSNES_NO_THREADED_DISPLAY
    -DSNES_NO_THREADED_INPUT
    -DSNES_NO_THREADED_SAVE
    
    ; Global
    -Wl,-Map,firmware.map
    -Wl,--cref
    -Wl,--print-memory-usage
    -O2
    -ffunction-sections
    -fdata-sections
    -Wl,--gc-sections
    -mlongcalls
    -DCORE_DEBUG_LEVEL=0
    -DLOG_LOCAL_LEVEL=ESP_LOG_WARN
    -DREMOVE_PRINTF
    -include src/share/emu_log.h ; gate C printf when REMOVE_PRINTF is set
    -fno-exceptions
    -fno-rtti
    -fuse-linker-plugin

    ; NES
    -Wl,--wrap=bmp_create ; nofrendo
    -Wl,--wrap=bmp_destroy ; nofrendo

    ; Stella (Atari 2600)
    -Isrc/atari2600/stella/common
    -Isrc/atari2600/stella/emucore
    -Isrc/atari2600/stella/gui
    -DSOUND_SUPPORT=1
    -DJUMP_TABLES_IN_TEXT_SECTION=1
    
    ; ProSystem (Atari 7800)
    -Isrc/atari7800/core
    -Isrc/atari7800/core/core
    -Isrc/atari7800/core/libretro-common/include
    ; -DA7800_NO_DATABASE  ; Drop built-in 7800 MD5 database (~5 KB flash); headered ROMs still work
    
    ; fMSX
    -DLSB_FIRST
    -DBPP8
    -DBPS16
    -DNO_MIDI        ; Disable MIDI logging tables (~12KB flash)
    -DNO_FLOPPY      ; Disable floppy/disk subsystem (ROM-only)
    -DNO_SHA1        ; Disable SHA1 ROM fingerprinting (no CARTS.SHA on SD)
    -DNO_MCF         ; Disable MCF cheat-file support
    -DNO_I8251       ; Disable RS232 i8251 runtime support
    -Isrc/msx/fMSX
    -Isrc/msx/EMULib
    -Isrc/msx/Z80

    ; GX4000
    -Isrc/gx4000
    -Isrc/gx4000/arnold
    -Isrc/gx4000/arnold/z80
    -DCPC_LSB_FIRST          ; ESP32 is little-endian
    -DLESS_MULTS             ; Use pScreenLine-based address calc (no multiply per NOP)
    -DCPC_NODEBUGGER         ; Strip out debugger UI code
    -DGX4000_TRIM_NONPLUS    ; Trim legacy CPC/KC hardware paths (GX4000 is CPC+ only)
    -DGX4000_CART_ONLY       ; Strip cassette/floppy/printer paths for cart-only GX4000

build_src_flags =
    -O3
    -g0 
    -fno-tree-slp-vectorize
    -fomit-frame-pointer
    -fno-unwind-tables
    -fno-asynchronous-unwind-tables
    -fno-plt             ; reduces indirect branch overhead 
    -Wno-stack-protector


board_build.partitions  = partitions_5m_spiffs_8mb.csv