Altirra - RetroBIOS

Type	standalone
Classification	Embedded HLE
Source	https://www.virtualdub.org/altirra.html
Version	4.40
Profiled	2026-08-11
Cores	altirra
Systems	atari-400-800, xegs, atari-5200

109 files | 0 required, 109 optional | 90 in repo, 19 missing | 21 with HLE fallback

atari-5200-os-4port.rom optional missing HLE fallback
Atari 5200 OS (4-port)

• System: atari-5200
• Size: 2.0 KB
• CRC32: 4248d3e3
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:25, src/Altirra/source/simulator.cpp:4800

atari-5200-os-2port.rom optional missing HLE fallback
Atari 5200 OS (2-port)

• System: atari-5200
• Size: 2.0 KB
• CRC32: c2ba2613
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:26, src/Altirra/source/simulator.cpp:4800

atari-basic-rev-a.rom optional missing HLE fallback
Atari BASIC rev. A

• System: atari-400-800
• Size: 8.0 KB
• CRC32: 4bec4de2
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:27, src/Altirra/source/simulator.cpp:4903-4912

atari-basic-rev-b.rom optional missing HLE fallback
Atari BASIC rev. B

• System: atari-400-800
• Size: 8.0 KB
• CRC32: f0202fb3
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:28, src/Altirra/source/simulator.cpp:4903-4912

atari-basic-rev-c.rom optional missing HLE fallback
Atari BASIC rev. C

• System: atari-400-800
• Size: 8.0 KB
• CRC32: 7d684184
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:29, src/Altirra/source/simulator.cpp:4903-4912

atari-800-os-a-ntsc.rom optional missing HLE fallback
Atari 400/800 OS-A NTSC

• System: atari-400-800
• Size: 10.0 KB
• CRC32: c1b3bb02
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:30, src/Altirra/source/simulator.cpp:4796

atari-800-os-a-pal.rom optional missing HLE fallback
Atari 400/800 OS-A PAL

• System: atari-400-800
• Size: 10.0 KB
• CRC32: 72b3fed4
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:31, src/Altirra/source/simulator.cpp:4796

atari-800-os-b-ntsc.rom optional missing HLE fallback
Atari 400/800 OS-B NTSC

• System: atari-400-800
• Size: 10.0 KB
• CRC32: 0e86d61d
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:32, src/Altirra/source/simulator.cpp:4796

atari-800-os-b-ntsc-xformer.rom optional missing HLE fallback
Atari 400/800 OS-B NTSC (Xformer patched)

• System: atari-400-800
• Size: 10.0 KB
• CRC32: 3e28a1fe
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:33, src/Altirra/source/simulator.cpp:4796
• OS-B patched by Xformer, reported as the OS-B specific firmware. Usually distributed as ATARIOSB.ROM (ATHelpFile/source/options-firmware.xml).

atari-800-os-b-pal.rom optional in repo HLE fallback
Atari 400/800 OS-B PAL

• System: atari-400-800
• Size: 10.0 KB
• CRC32: 0c913dfc
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:34, src/Altirra/source/simulator.cpp:4796

atari-1200xl-os-rev-10.rom optional missing HLE fallback
Atari 1200XL OS rev. 10

• System: atari-400-800
• Size: 16.0 KB
• CRC32: c5c11546
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:35, src/Altirra/source/simulator.cpp:4804

atari-1200xl-os-rev-11.rom optional missing HLE fallback
Atari 1200XL OS rev. 11

• System: atari-400-800
• Size: 16.0 KB
• CRC32: 1a1d7b1b
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:36, src/Altirra/source/simulator.cpp:4804

atari-xl-os-ver-1.rom optional missing HLE fallback
Atari XL/XE OS ver.1

• System: atari-400-800
• Size: 16.0 KB
• CRC32: 643bcc98
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:37, src/Altirra/source/simulator.cpp:4810

atari-xl-os-ver-2.rom optional missing HLE fallback
Atari XL/XE OS ver.2

• System: atari-400-800
• Size: 16.0 KB
• CRC32: 1f9cd270
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:38, src/Altirra/source/simulator.cpp:4810
• The common XL/XE OS, usually distributed as ATARIXL.ROM (ATHelpFile/source/options-firmware.xml).

atari-xl-os-ver-3.rom optional missing HLE fallback
Atari XL/XE OS ver.3

• System: atari-400-800
• Size: 16.0 KB
• CRC32: 29f133f7
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:39, src/Altirra/source/simulator.cpp:4810

atari-xegs-os-ver-4.rom optional missing HLE fallback
Atari XL/XE/XEGS OS ver.4

• System: xegs
• Size: 16.0 KB
• CRC32: 1eaf4002
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:40, src/Altirra/source/simulator.cpp:4814

atari-xegs-missile-command.rom optional missing
Atari XEGS Missile Command

• System: xegs
• Size: 8.0 KB
• CRC32: bdca01fb
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:41, src/Altirra/source/simulator.cpp:4921
• XEGS built-in game ROM.

blackbox-1.34.rom optional in repo
Black Box ver. 1.34

• System: atari-400-800
• Size: 16.0 KB
• CRC32: a8953874
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:43, src/Altirra/source/blackbox.cpp:352

blackbox-1.41.rom optional in repo
Black Box ver. 1.41

• System: atari-400-800
• Size: 16.0 KB
• CRC32: 91175314
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:44, src/Altirra/source/blackbox.cpp:352

blackbox-2.16.rom optional in repo
Black Box ver. 2.16

• System: atari-400-800
• Size: 64.0 KB
• CRC32: 7cafd9a8
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:45, src/Altirra/source/blackbox.cpp:352
• 64K image. 16K images are accepted and bank-rotated (blackbox.cpp:355).

blackbox-floppy-board-1.5.rom optional in repo
Black Box Floppy Board v1.5

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 769cc316
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:47, src/Altirra/source/blackboxfloppy.cpp:289

mio-1.1k-128kbit.rom optional in repo
MIO ver. 1.1k (128Kbit)

• System: atari-400-800
• Size: 16.0 KB
• CRC32: 7d68f07b
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:49, src/Altirra/source/mio.cpp:275
• Oversized EPROM dump: the loader takes the second 8K when the first 8K is blank (mio.cpp:277-292).

mio-1.1m-128kbit.rom optional in repo
MIO ver. 1.1m (128Kbit)

• System: atari-400-800
• Size: 16.0 KB
• CRC32: 00694a74
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:50, src/Altirra/source/mio.cpp:275
• Oversized EPROM dump: the loader takes the second 8K when the first 8K is blank (mio.cpp:277-292).

mio-1.41-64kbit.rom optional in repo
MIO ver. 1.41 (64Kbit)

• System: atari-400-800
• Size: 8.0 KB
• CRC32: a6a9e3d6
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:51, src/Altirra/source/mio.cpp:275

mio-1.41-128kbit.rom optional in repo
MIO ver. 1.41 (128Kbit)

• System: atari-400-800
• Size: 16.0 KB
• CRC32: 1d400131
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:52, src/Altirra/source/mio.cpp:275
• Oversized EPROM dump: the loader takes the second 8K when the first 8K is blank (mio.cpp:277-292).

mio-1.41-256kbit.rom optional in repo
MIO ver. 1.41 (256Kbit)

• System: atari-400-800
• Size: 32.0 KB
• CRC32: e2f4b3a8
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:53, src/Altirra/source/mio.cpp:275
• Oversized EPROM dump: the loader takes the second 8K when the first 8K is blank (mio.cpp:277-292).

atari-810-rev-b.rom optional in repo
Atari 810 firmware rev. B

• System: atari-400-800
• Size: 2.0 KB
• CRC32: 19227d33
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:54, src/Altirra/source/diskdrivefull.cpp:1165-1213

atari-810-rev-c.rom optional in repo
Atari 810 firmware rev. C

• System: atari-400-800
• Size: 2.0 KB
• CRC32: 0896f03d
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:55, src/Altirra/source/diskdrivefull.cpp:1165-1213

atari-810-rev-e.rom optional in repo
Atari 810 firmware rev. E

• System: atari-400-800
• Size: 2.0 KB
• CRC32: aad220f4
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:56, src/Altirra/source/diskdrivefull.cpp:1165-1213

atari-1050-rev-e.rom optional in repo
Atari 1050 firmware rev. E

• System: atari-400-800
• Size: 4.0 KB
• CRC32: f9a7afb2
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:57, src/Altirra/source/diskdrivefull.cpp:1165-1213

atari-1050-rev-h.rom optional in repo
Atari 1050 firmware rev. H

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 6d9d589b
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:58, src/Altirra/source/diskdrivefull.cpp:1165-1213

atari-1050-rev-j.rom optional in repo
Atari 1050 firmware rev. J

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 91ba303d
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:59, src/Altirra/source/diskdrivefull.cpp:1165-1213

atari-1050-rev-k.rom optional in repo
Atari 1050 firmware rev. K

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 3abe7ef4
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:60, src/Altirra/source/diskdrivefull.cpp:1165-1213

atari-1050-rev-l.rom optional in repo
Atari 1050 firmware rev. L

• System: atari-400-800
• Size: 4.0 KB
• CRC32: fb4b8757
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:61, src/Altirra/source/diskdrivefull.cpp:1165-1213

happy-810-prev7-4k.rom optional in repo
Happy 810 pre-v7 firmware, 4K original (serial $4490)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 942ec3d5
• Validation: size, crc32
• Source: src/Altirra/source/uifirmware.cpp:528

happy-810-prev7-4k-nonoriginal.rom optional in repo
Happy 810 pre-v7 firmware, 4K non-original (serial $1704)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 143b8538
• Validation: size, crc32
• Source: src/Altirra/source/uifirmware.cpp:528

happy-810-prev7-3k.rom optional in repo
Happy 810 pre-v7 firmware, functional 3K inside a 6K image (serial $4B9B)

• System: atari-400-800
• Size: 6.0 KB
• CRC32: f81b69cb
• Validation: size, crc32
• Source: src/Altirra/source/uifirmware.cpp:528
• The image is 6144 bytes; Altirra identifies it by a checksum taken over the functional 3K, which its firmware list reports as the size.

happy-810-v7-6k-modified.rom optional in repo
Happy 810 firmware (v7, 6K functional ROM, modified)

• System: atari-400-800
• Size: 6.0 KB
• CRC32: 371f6973
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:62, src/Altirra/source/diskdrivefull.cpp:1165-1234
• Modified variant of the 6K functional dump.

happy-810-v7-6k.rom optional in repo
Happy 810 firmware (v7, 6K functional ROM)

• System: atari-400-800
• Size: 6.0 KB
• CRC32: 9cc7a207
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:63, src/Altirra/source/diskdrivefull.cpp:1165-1234
• Functional 6K region only; the loader also accepts 3K, 4K and 8K dumps.

happy-810-v7-8k.rom optional in repo
Happy 810 firmware (v7, 8K full ROM)

• System: atari-400-800
• Size: 8.0 KB
• CRC32: 982d825d
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:64, src/Altirra/source/diskdrivefull.cpp:1165-1234

happy-1050-rev-1.rom optional in repo
Happy 1050 firmware rev. 1

• System: atari-400-800
• Size: 8.0 KB
• CRC32: 19b6bfe5
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:65, src/Altirra/source/diskdrivefull.cpp:1165-1213

happy-1050-rev-2.rom optional in repo
Happy 1050 firmware rev. 2

• System: atari-400-800
• Size: 8.0 KB
• CRC32: f76eae16
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:66, src/Altirra/source/diskdrivefull.cpp:1165-1213

atr8000-3.02.rom optional in repo
ATR8000 firmware ver 3.02

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 739bab74
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:67, src/Altirra/source/diskdriveatr8000.cpp:450

indus-gt-1.1.rom optional in repo
Indus GT firmware ver. 1.1

• System: atari-400-800
• Size: 4.0 KB
• CRC32: d125caad
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:68, src/Altirra/source/diskdriveindusgt.cpp:52

indus-gt-1.2.rom optional in repo
Indus GT firmware ver. 1.2

• System: atari-400-800
• Size: 4.0 KB
• CRC32: d8504b4a
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:69, src/Altirra/source/diskdriveindusgt.cpp:52

us-doubler-rev-l.rom optional in repo
US Doubler firmware rev. L

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 605b7153
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:70, src/Altirra/source/diskdrivefull.cpp:1165-1213

810-turbo-1.2.rom optional in repo
810 Turbo firmware V1.2

• System: atari-400-800
• Size: 2.0 KB
• CRC32: 0126a511
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:71, src/Altirra/source/diskdrivefull.cpp:1165-1213

percom-rfd-1.00.rom optional in repo
Percom RFD V1.00

• System: atari-400-800
• Size: 2.0 KB
• CRC32: 5a396459
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:72, src/Altirra/source/diskdrivepercom.cpp:88-92

percom-rfd-1.10.rom optional in repo
Percom RFD V1.10

• System: atari-400-800
• Size: 2.0 KB
• CRC32: e2d4a05c
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:73, src/Altirra/source/diskdrivepercom.cpp:88-92

percom-rfd-1.20.rom optional in repo
Percom RFD V1.20

• System: atari-400-800
• Size: 2.0 KB
• CRC32: c6c73d23
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:74, src/Altirra/source/diskdrivepercom.cpp:88-92

percom-rfd-2.10.rom optional in repo
Percom RFD V2.10

• System: atari-400-800
• Size: 2.0 KB
• CRC32: ac141045
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:75, src/Altirra/source/diskdrivepercom.cpp:88-92

astra-1001-1620.rom optional in repo
Astra 1001/1620 (based on Percom RFD V1.10)

• System: atari-400-800
• Size: 2.0 KB
• CRC32: 2ab65122
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:76, src/Altirra/source/diskdrivepercom.cpp:88-92

percom-at-88-1.2.rom optional in repo
Percom AT-88 V1.2 (460-0066-001)

• System: atari-400-800
• Size: 2.0 KB
• CRC32: 2372fae6
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:77, src/Altirra/source/diskdrivepercom.cpp:88-92

percom-at-88-1.2-damaged.rom optional in repo
Percom AT-88 V1.2 (damaged) (460-0066-001)

• System: atari-400-800
• Size: 2.0 KB
• CRC32: fd13a674
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:78, src/Altirra/source/diskdrivepercom.cpp:88-92
• Damaged dump of the same EPROM as percom-at-88-1.2.rom.

percom-at88-spd-1.01.rom optional in repo
Percom AT88-SPD V1.01 (0073)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 518900e6
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:79, src/Altirra/source/diskdrivepercom.cpp:88-92

percom-at88-spd-1.11.rom optional in repo
Percom AT88-SPD V1.11 (1-9-84)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 87a0d7e7
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:80, src/Altirra/source/diskdrivepercom.cpp:88-92

percom-at88-spd-1.21.rom optional in repo
Percom AT88-SPD V1.21 (5-4-84)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: fc6675f2
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:81, src/Altirra/source/diskdrivepercom.cpp:88-92

1050-turbo-ii-3.4.rom optional in repo
1050 Turbo II V3.4

• System: atari-400-800
• Size: 8.0 KB
• CRC32: 55dfc9ac
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:82, src/Altirra/source/diskdrivefull.cpp:1165-1213

1050-turbo-ii-3.5.rom optional in repo
1050 Turbo II V3.5

• System: atari-400-800
• Size: 8.0 KB
• CRC32: 4a69312b
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:83, src/Altirra/source/diskdrivefull.cpp:1165-1213

atari-815.rom optional in repo
Atari 815 firmware

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 1527d542
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:84, src/Altirra/source/diskdrive815.cpp:352

atari-1090-firmware-rev-9.rom optional in repo
Atari 1090 80-column firmware rev. 9

• System: atari-400-800
• Size: 2.0 KB
• CRC32: 87809326
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:85, src/Altirra/source/1090.cpp:172
• The predefined internal 1090 firmware resolves to no resource, so this image has no fallback (firmwaremanager.cpp:190-211).

atari-1090-charset.rom optional in repo HLE fallback
Atari 1090 80-column charset

• System: atari-400-800
• Size: 2.0 KB
• CRC32: 8f07d9a0
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:86, src/Altirra/source/1090.cpp:179
• Character generator. Synthesised from the internal XL kernel charset when absent (firmwaremanager.cpp:258-268).

bit3-full-view-80-firmware.rom optional in repo
Bit 3 Full-View 80 firmware

• System: atari-400-800
• Size: 4.0 KB
• CRC32: b9d576da
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:87, src/Altirra/source/bit3.cpp:173

bit3-full-view-80-charset.rom optional in repo
Bit 3 Full-View 80 charset

• System: atari-400-800
• Size: 2.0 KB
• CRC32: 738c6ac1
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:88, src/Altirra/source/bit3.cpp:180
• Character generator.

bit3-full-view-80-charset-4k.rom optional in repo
Bit 3 Full-View 80 charset (4K overdump)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: a4534cea
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:91, src/Altirra/source/bit3.cpp:180
• 4K overdump carrying 2K of unique data (firmwaredetect.cpp:90).

xf551-7.4.rom optional in repo
XF551 rev. 7.4

• System: atari-400-800
• Size: 8.0 KB
• CRC32: fc02766b
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:93, src/Altirra/source/diskdrivexf551.cpp:269-276
• 8K image; the loader reads the first 4K and splits it into two 2K banks.

xf551-7.7.rom optional in repo
XF551 rev. 7.7

• System: atari-400-800
• Size: 8.0 KB
• CRC32: 38b97ae3
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:94, src/Altirra/source/diskdrivexf551.cpp:269-276
• 8K image; the loader reads the first 4K and splits it into two 2K banks.

xf551-7.7-density-hack.rom optional in repo
XF551 rev. 7.7 (w/broken density hack)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 37dda8b1
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:95, src/Altirra/source/diskdrivexf551.cpp:269-276
• Half-size dump with the density hack broken.

xf551-7.7-720k.rom optional in repo
XF551 rev. 7.7 (modified for 720K 3.5")

• System: atari-400-800
• Size: 8.0 KB
• CRC32: 0e117428
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:96, src/Altirra/source/diskdrivexf551.cpp:269-276
• Modified for 720K 3.5" drives. 8K image; the loader reads the first 4K and splits it into two 2K banks.

1400xl-handler-v1.rom optional in repo
1400XL V:/T: handler firmware (unknown v1)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 2ba701df
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:98, src/Altirra/source/1400xl.cpp:551-555

1400xl-handler-v2.rom optional in repo
1400XL V:/T: handler firmware (unknown v2)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 5ec3ec7d
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:99, src/Altirra/source/1400xl.cpp:551-555

1450xld-disk-controller.rom optional in repo
1450XLD disk controller firmware

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 7773b7dd
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:101, src/Altirra/source/1450xld.cpp:753-758

1450xld-tong-disk-controller.rom optional in repo
1450XLD "TONG" disk controller firmware

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 03930886
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:102, src/Altirra/source/1450xld.cpp:753-758

1450xld-disk-handler-rev-e.rom optional in repo
1450XLD disk handler firmware (rev. E)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: e8f9c8a7
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:103, src/Altirra/source/1450xld.cpp:738-742
• The image is 4K; the loader reads its first 2K into mFirmware (1450xld.h:179).

1450xld-disk-handler-rev-f.rom optional in repo
1450XLD disk handler firmware (rev. F)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 4bb7fa3a
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:104, src/Altirra/source/1450xld.cpp:738-742
• The image is 4K; the loader reads its first 2K into mFirmware (1450xld.h:179).

1450xld-disk-handler-post-rev-f.rom optional in repo
1450XLD disk handler firmware (post rev. F)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 29359910
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:105, src/Altirra/source/1450xld.cpp:738-742
• The image is 4K; the loader reads its first 2K into mFirmware (1450xld.h:179).

atari-835-internal.rom optional in repo
Atari 835 internal 8048 firmware

• System: atari-400-800
• Size: 1.0 KB
• CRC32: d6dd4f41
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:107, src/Altirra/source/1030full.cpp:282

atari-1030-internal.rom optional in repo
Atari 1030 internal 8050 firmware

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 329b1d5b
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:109, src/Altirra/source/1030full.cpp:300

atari-1030-external.rom optional in repo
Atari 1030 external ROM firmware

• System: atari-400-800
• Size: 8.0 KB
• CRC32: 7abdb8e7
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:110, src/Altirra/source/1030full.cpp:301

atari-820.rom optional in repo
Atari 820 firmware

• System: atari-400-800
• Size: 2.0 KB
• CRC32: 79e0fea4
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:112, src/Altirra/source/820full.cpp:206

atari-1025.rom optional in repo
Atari 1025 firmware

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 46d194b4
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:113, src/Altirra/source/1025full.cpp:227

atari-1029-english.rom optional in repo
Atari 1029 firmware (English)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 19c4f811
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:114, src/Altirra/source/1029full.cpp:233
• English character set variant.

atari-850.rom optional in repo
Atari 850 firmware

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 2cf990b9
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:116, src/Altirra/source/850full.cpp:316

atari-850-early.rom optional in repo
Atari 850 firmware (early revision)

• System: atari-400-800
• Size: 4.0 KB
• CRC32: 9201359a
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:117, src/Altirra/source/850full.cpp:316
• Early 850 revision.

speedy-xf-1.7.rom optional in repo
Speedy XF v1.7

• System: atari-400-800
• Size: 32.0 KB
• CRC32: 597eb2e4
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:119, src/Altirra/source/diskdrivespeedyxf.cpp:353-364
• 32K image, cloned to 64K by the loader (diskdrivespeedyxf.cpp:363-364).

speedy-xf-1.8.rom optional in repo
Speedy XF v1.8

• System: atari-400-800
• Size: 32.0 KB
• CRC32: 554a9067
• Validation: size, crc32
• Source: src/Altirra/source/firmwaredetect.cpp:120, src/Altirra/source/diskdrivespeedyxf.cpp:353-364
• 32K image, cloned to 64K by the loader (diskdrivespeedyxf.cpp:363-364).

810-archiver.rom optional missing
810 Archiver disk drive firmware

• System: atari-400-800
• Size: max 4.0 KB
• Source: src/Altirra/source/uifirmware.cpp:528, src/Altirra/source/diskdrivefull.cpp:1165-1213

1050-duplicator.rom optional in repo
1050 Duplicator disk drive firmware

• System: atari-400-800
• Size: max 8.0 KB
• Source: src/Altirra/source/uifirmware.cpp:532, src/Altirra/source/diskdrivefull.cpp:1165-1213

speedy-1050.rom optional in repo
Speedy 1050 disk drive firmware

• System: atari-400-800
• Size: max 16.0 KB
• Source: src/Altirra/source/uifirmware.cpp:534, src/Altirra/source/diskdrivefull.cpp:1165-1213

super-archiver.rom optional in repo
Super Archiver disk drive firmware

• System: atari-400-800
• Size: max 4.0 KB
• Source: src/Altirra/source/uifirmware.cpp:536, src/Altirra/source/diskdrivefull.cpp:1165-1213
• Shared by the Super Archiver and Super Archiver with BitWriter device types (diskdrivefull.cpp:1173-1174).

toms-1050.rom optional in repo
TOMS 1050 disk drive firmware

• System: atari-400-800
• Size: max 8.0 KB
• Source: src/Altirra/source/uifirmware.cpp:537, src/Altirra/source/diskdrivefull.cpp:1165-1213

tygrys-1050.rom optional in repo
Tygrys 1050 disk drive firmware

• System: atari-400-800
• Size: max 4.0 KB
• Source: src/Altirra/source/uifirmware.cpp:538, src/Altirra/source/diskdrivefull.cpp:1165-1213

1050-turbo.rom optional in repo
1050 Turbo disk drive firmware

• System: atari-400-800
• Size: max 16.0 KB
• Source: src/Altirra/source/uifirmware.cpp:540, src/Altirra/source/diskdrivefull.cpp:1165-1213

is-plate.rom optional in repo
I.S. Plate disk drive firmware

• System: atari-400-800
• Size: max 4.0 KB
• Source: src/Altirra/source/uifirmware.cpp:542, src/Altirra/source/diskdrivefull.cpp:1165-1213

amdek-amdc.rom optional in repo
Amdek AMDC-I/II disk drive firmware

• System: atari-400-800
• Size: max 4.0 KB
• Source: src/Altirra/source/uifirmware.cpp:548, src/Altirra/source/diskdriveamdc.cpp:88

ultimate1mb.rom optional in repo HLE fallback
Ultimate1MB firmware

• System: atari-400-800
• Size: max 512.0 KB
• Source: src/Altirra/source/uifirmware.cpp:555, src/Altirra/source/simulator.cpp:4985-4996, src/Altirra/source/ultimate1mb.cpp:237-242
• Altirra U1MB Recovery OS is used when no image is registered.

myide2.rom optional in repo
MyIDE-II cartridge firmware

• System: atari-400-800
• Size: max 512.0 KB
• Source: src/Altirra/source/uifirmware.cpp:556, src/Altirra/source/myide.cpp:304-315

side.rom optional in repo
SIDE cartridge firmware

• System: atari-400-800
• Size: max 512.0 KB
• Source: src/Altirra/source/uifirmware.cpp:557, src/Altirra/source/side.cpp:283-294

side2.rom optional in repo
SIDE 2 cartridge firmware

• System: atari-400-800
• Size: max 512.0 KB
• Source: src/Altirra/source/uifirmware.cpp:558, src/Altirra/source/side.cpp:283-294

side3.rom optional in repo
SIDE 3 cartridge firmware

• System: atari-400-800
• Size: max 8.0 MB
• Source: src/Altirra/source/uifirmware.cpp:559, src/Altirra/source/side3.cpp:448-460

kmkjz-ide.rom optional in repo
KMK/JZ IDE BIOS

• System: atari-400-800
• Size: max 3.0 KB
• Source: src/Altirra/source/uifirmware.cpp:560, src/Altirra/source/kmkjzide.cpp:357-394
• The v1 device exposes 0xC00 of its flash, so the loader reads only that much.

kmkjz-ide2-main.rom optional in repo
KMK/JZ IDE 2 (IDEPlus) main firmware

• System: atari-400-800
• Size: max 128.0 KB
• Source: src/Altirra/source/uifirmware.cpp:561, src/Altirra/source/kmkjzide.cpp:357-394

kmkjz-ide2-sdx.rom optional in repo
KMK/JZ IDE 2 (IDEPlus) SpartaDOS X firmware

• System: atari-400-800
• Size: max 512.0 KB
• Source: src/Altirra/source/uifirmware.cpp:562, src/Altirra/source/kmkjzide.cpp:357-394
• Two revisions circulate, SDX 4.45 and 4.47; the collection carries 4.47.

atari-1030-download.rom optional missing HLE fallback
Atari 1030 modem download image

• System: atari-400-800
• Size: max 10.1 KB
• Source: src/Altirra/source/uifirmware.cpp:568, src/Altirra/source/1030.cpp:1162
• Altirra builds its own download image from src/Kernel/source/1030/firmware.s when none is registered.

rapidus-flash.rom optional in repo HLE fallback
Rapidus accelerator flash firmware

• System: atari-400-800
• Size: max 512.0 KB
• Source: src/Altirra/source/uifirmware.cpp:571, src/Altirra/source/rapidus.cpp:338
• Altirra Rapidus Bootstrap Flash is used when no image is registered.

rapidus-core-pbi.rom optional missing HLE fallback
Rapidus 65C816 core PBI firmware

• System: atari-400-800
• Size: max 2.0 KB
• Source: src/Altirra/source/uifirmware.cpp:572, src/Altirra/source/rapidus.cpp:339
• Altirra Rapidus Bootstrap 65816 PBI Firmware is used when no image is registered.

ape-warp-os.rom optional in repo
APE Warp+ OS 32-in-1 firmware

• System: atari-400-800
• Size: max 512.0 KB
• Source: src/Altirra/source/uifirmware.cpp:573, src/Altirra/source/warpos.cpp:115

Altirra.chm optional in repo bundled
Altirra help file

• System: atari-400-800
• Source: src/Altirra/source/oshelper.cpp:509-529
• Opened from the program directory when help is requested.

Additions.atr optional in repo bundled
Altirra Additions disk

• System: atari-400-800
• Source: src/ATHelpFile/source/additions.xml:3-10, src/Altirra/source/uidevices.cpp:252, src/Altirra/source/uidevices.cpp:486
• Disk image carrying the handler software several emulated devices need: ALTXEP80.SYS for the XEP80, BOOT850.COM for the 850 interface, BOOT1030.COM for the 1030 modem, ATDEBUGX.SYS for the debug link. The user mounts it as an ordinary disk image.

Generated on 2026-08-23T16:12:06Z