Retro disk and tape images

Open works out what the image is from its contents (signatures, boot sectors, catalogue sanity checks), not just its name. When an image could be more than one thing — a FAT disk that might be MSX or PC, an Apple disk in DOS or ProDOS sector order — Open as lists the other readings with their scores. A ZIP holding images opens the image inside; .adz and .gz are unpacked first. Amiga LHA, LZX and DMS archives go to the archive extractor rather than being unpacked twice.

Disk shows what the file system knows: disk name and ID, DOS version, geometry, free space, boot options, container details (MSA, extended DSK, 2MG).

Files lists everything with its type, load address, protection bits and date where the format has them. Tap a file to open it:

Add files… writes into the open image (or the folder you tapped). The fields beside it are the format’s own: C64 file type, ZX start address, BBC load and exec addresses, Apple type and address, AMSDOS or +3DOS header. A .bas or .txt listing (lines starting with numbers) is tokenised for the machine first, so it LOADs and RUNs. Rename and Delete are on each file; tapes also have ↑ ↓ to reorder.

New blank image formats an empty disk for any format below — D64, D71, D81, T64, C64 and ZX TAP, ATR single or double density, ADF OFS or FFS, ST/MSA, CPC data or system, +3, SSD, DSD, DOS 3.3, ProDOS 140 KB or 800 KB, MSX and PC FAT.

Convert copies the files into another format for the same machine — D64 ⇄ D71 ⇄ D81 ⇄ T64 ⇄ TAP, ZX TAP ⇄ +3 disk (with +3DOS headers made from the tape headers), DOS 3.3 ⇄ ProDOS, SSD ⇄ DSD, CPC data ⇄ system, OFS ⇄ FFS — or changes the container without touching the sectors (ST ⇄ MSA, TZX → TAP, Apple DOS order ⇄ ProDOS order).

▶ emulator opens the image in the site’s C64, Atari 8-bit, Atari ST, ZX Spectrum or Amiga emulator, in a new tab. A C64 PRG or an Atari executable can be run straight from the file view.

Extract all (ZIP) keeps folder paths and gives files a sensible extension (.prg, .seq, .bas, .bin).

Copy-protected images that need track timing (STX, IPF, G64, NIB, WOZ, EDSK weak sectors) are not read; nor is FAT32.

C64 TAP: only blocks in the standard Kernal ROM loader format are decoded — turbo loaders show up as nothing. Adding, deleting or renaming re-encodes the whole tape with standard timing. SEQ files on tape are not decoded.

TZX opens read-only (convert it to TAP to edit); direct-recording and CSW blocks are skipped.

Atari ST disks with copy protection or a non-standard boot sector may not have a usable BPB. DOS 2.5 enhanced density and MyDOS disks open read-only.

Files added to a CP/M (CPC / +3) disk without a header are padded to 128-byte records with ^Z, as CP/M itself does; the exact length is lost.

Blank DOS 3.3 and SYSTEM-format CPC disks have no DOS or CP/M on their system tracks, so they don’t boot — they are data disks. DOS 3.3 keeps tracks 0–2 reserved for the DOS image.

Long FAT file names are shown but new files get 8.3 names; renaming drops the long name.