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chore: profile geartowns 1.0.1
1.0.1 emulates the FM Towns II HR, which loads the fmtownshr set; firmware tables unchanged.
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@@ -3,9 +3,9 @@ type: libretro
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core_classification: official_port
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source: "https://github.com/drhelius/Geartowns"
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upstream: "https://github.com/drhelius/Geartowns"
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profiled_date: "2026-10-23"
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source_commit: "d157715112589aeb7e88319b2f2b4ac4e2cafc5f"
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core_version: "0.0.10"
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profiled_date: "2026-10-27"
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source_commit: "996d42b098bd572ba66a8246bfe56cee39e5ff6e"
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core_version: "1.0.1"
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display_name: "Fujitsu - FM Towns (Geartowns)"
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cores:
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- "geartowns"
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@@ -15,15 +15,15 @@ systems:
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notes: |
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FM Towns emulator by Ignacio Sanchez (drhelius). The same tree builds the
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desktop application and the libretro core (platforms/libretro). The core
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emulates the Model 1/2, 1F/2F, 10F/20F, II CX, UX, UG, HG and the Marty
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(src/system/machine_profiles.h:108-122, `emulated` field). The version string
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emulates the Model 1/2, 1F/2F, 10F/20F, II CX, UX, UG, HG, HR and the Marty
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(src/system/machine_profiles.h:112-126, `emulated` field). The version string
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is `git describe` at build time (platforms/libretro/Makefile:369-371).
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retro_load_game() fails when load_bios() finds no firmware
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(platforms/libretro/libretro.cpp:736-740). load_bios() searches
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(platforms/libretro/libretro.cpp:738-742). load_bios() searches
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system/geartowns first, then the system directory itself, each time
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accepting first only a set made for the selected model and then any set
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(platforms/libretro/libretro.cpp:842-869). Firmware::FindSources() takes
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(platforms/libretro/libretro.cpp:844-871). Firmware::FindSources() takes
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as candidates the folder itself, every direct subfolder and every .zip in
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it (src/media/firmware.cpp:288-348). Folder and zip names are free. A
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candidate counts only when the System, OS, Font and Dictionary ROMs are all
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@@ -33,16 +33,17 @@ notes: |
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Six sets are known (src/media/firmware.h:115-124): fmtowns (Model 1/2),
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freetowns (Free FM Towns Project replacement ROMs, used by the Model 1/2),
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fmtownsux (UX, also used by 1F/2F, 10F/20F, CX and UG), fmtmarty (Marty),
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fmtownshr and fmtownsftv (both used by the HG, HR preferred). On Auto the
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fmtownshr (HR, also used by the HG) and fmtownsftv (also used by the HG,
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after fmtownshr). On Auto the
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model comes from the game database and falls back to the Model 1/2 or to
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the first model in release order that has a set
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(src/geartowns_core.cpp:1958-1991, src/geartowns_core.cpp:2050-2055). A
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(src/geartowns_core.cpp:1986-2022, src/geartowns_core.cpp:2106-2111). A
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1.44 MB floppy (2HD at 300 rpm) inserted on Auto replaces a model without a
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three-mode drive by the first one in release order that has it, the HG
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(src/geartowns_core.cpp:768-771, src/geartowns_core.cpp:1968-1976), which
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(src/geartowns_core.cpp:776-779, src/geartowns_core.cpp:1997-2005), which
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uses the fmtownshr or fmtownsftv set. A set made for another model still
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loads in the second pass, with a warning
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(platforms/libretro/libretro.cpp:871-904).
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(platforms/libretro/libretro.cpp:873-906).
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File names are matched without case, inside a zip only at the archive root
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(src/media/firmware.cpp:617-666). Accepted names, one group per component,
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@@ -62,14 +63,14 @@ notes: |
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Dictionary are required. A missing 20-dot Font or Extension is replaced by
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0xFF, a missing Serial ROM is generated (src/media/firmware.cpp:76-165,
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src/media/firmware.cpp:260-263). The CRC32 of every component is looked up
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in game_db.h (src/media/firmware.cpp:167-184, src/media/game_db.h:337-369),
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in game_db.h (src/media/firmware.cpp:167-184, src/media/game_db.h:344-376),
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and an unknown CRC only produces a warning. The Free FM Towns set is known by
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System 65DC3B1F, OS 43C18E92, Font 736D9CB1 and a blank Dictionary
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504BF849. The Marty slices are known by System 937311F6, OS 2BC2AF96,
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Extension E1A9FA72 and 20-dot Font 75660AAC.
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The CMOS is written by the core next to the saves
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(platforms/libretro/libretro.cpp:3001-3015). It is state, not a file to
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(platforms/libretro/libretro.cpp:3019-3033). It is state, not a file to
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obtain.
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files:
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@@ -84,7 +85,7 @@ files:
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- { name: "fmt_dos.rom", size: 524288, crc32: "112872ee" }
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- { name: "fmt_fnt.rom", size: 262144, crc32: "955c6b75" }
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- { name: "fmt_dic.rom", size: 524288, crc32: "b314c659" }
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source_ref: "platforms/libretro/libretro.cpp:736-740, platforms/libretro/libretro.cpp:851-869, src/media/firmware.h:117, src/media/firmware.cpp:28-33, src/media/firmware.cpp:288-348, src/media/game_db.h:337-341"
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source_ref: "platforms/libretro/libretro.cpp:738-742, platforms/libretro/libretro.cpp:853-871, src/media/firmware.h:117, src/media/firmware.cpp:28-33, src/media/firmware.cpp:288-348, src/media/game_db.h:344-348"
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note: >
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Set for the Model 1/2, the machine Auto falls back to. The same four
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files load from any subfolder of system/geartowns or from
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@@ -103,7 +104,7 @@ files:
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- { name: "fmt_fnt.rom", size: 262144, crc32: "dd6fd544" }
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- { name: "fmt_dic.rom", size: 524288, crc32: "82d1daa2" }
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- { name: "mytownsux.rom", size: 32, crc32: "5cc7e6bc" }
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source_ref: "src/media/firmware.h:119-120, src/media/firmware.cpp:28-34, src/media/game_db.h:343-348"
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source_ref: "src/media/firmware.h:119-120, src/media/firmware.cpp:28-34, src/media/game_db.h:350-355"
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note: "Set for the UX, also used by the 1F/2F, 10F/20F, CX and UG."
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- name: "fmtmarty.zip"
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@@ -115,7 +116,7 @@ files:
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contents:
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- { name: "mrom.m36", size: 2097152 }
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- { name: "mrom.m37", size: 2097152 }
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source_ref: "src/media/firmware.h:121, src/media/firmware.cpp:500-511, src/media/game_db.h:350-354"
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source_ref: "src/media/firmware.h:121, src/media/firmware.cpp:500-511, src/media/game_db.h:357-361"
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note: >
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The core checks the CRC32 of the slices it cuts from the two mask
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ROMs, not of the files: System 937311F6, OS 2BC2AF96, Extension
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@@ -134,8 +135,8 @@ files:
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- { name: "fmt_fnt.rom", size: 262144 }
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- { name: "fmt_dic.rom", size: 524288 }
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- { name: "mytownshr.rom", size: 32, crc32: "c52f0e89" }
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source_ref: "src/media/firmware.h:122, src/media/firmware.cpp:28-34, src/media/game_db.h:356-358"
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note: "First choice for the HG. The HR itself is not emulated."
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source_ref: "src/media/firmware.h:122, src/media/firmware.cpp:28-34, src/media/game_db.h:363-365"
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note: "Set for the HR, and first choice for the HG."
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- name: "fmtownsftv.zip"
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description: "FM Towns II Fresh TV firmware set"
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@@ -150,5 +151,5 @@ files:
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- { name: "fmt_dic.rom", size: 524288 }
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- { name: "fmt_f20.rom", size: 524288, crc32: "9f55a20c" }
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- { name: "mytownsftv.rom", size: 32, crc32: "a961aae7" }
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source_ref: "src/media/firmware.h:123, src/media/firmware.cpp:28-34, src/media/game_db.h:360-363"
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source_ref: "src/media/firmware.h:123, src/media/firmware.cpp:28-34, src/media/game_db.h:367-370"
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note: "Second choice for the HG. The MF/Fresh itself is not emulated."
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