65X-DOS has a somewhat MS-DOS like UI. The prompt at boot is sd0:>, using labels instead of drive letters, but otherwise it means the same. It has unix-like command line utilities, except for debug which is like the MS-DOS debugger, only resident in ROM and triggered by the BRK opcode.
There are some interesting utilities already, like ppx.prg, a utility which does for PGZ-format 65816 executables what UPX does for COFF/ELF format x86 ones -- transparent compression of executables, which speeds up loading.
The editor, edit.prg is nano-like for now, but supports line numbers and auto-indent and word wrapping.
It's all working and has a thorough test harness, using the Nivix emulator for Sentinel 65X, which has cycle-accurate W65C265S CPU emulation.
And I feel like I can't release any of it because it's 100% slopware. Carefully designed, well-tested, fully functioning slopware.
mos_8502 :verified: 🇨🇦
npub1qn…5hzwk
2026-08-13 19:04:43 UTC
Author Public Key
npub1qnufz4pycufk27kkeev5g0fgm0w0tqexsly674s2uwy0tynk5ymsk5hzwkPublished at
2026-08-13 19:04:43 UTCEvent JSON
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"content": "65X-DOS has a somewhat MS-DOS like UI. The prompt at boot is sd0:\u0026gt;, using labels instead of drive letters, but otherwise it means the same. It has unix-like command line utilities, except for debug which is like the MS-DOS debugger, only resident in ROM and triggered by the BRK opcode.\n\nThere are some interesting utilities already, like ppx.prg, a utility which does for PGZ-format 65816 executables what UPX does for COFF/ELF format x86 ones -- transparent compression of executables, which speeds up loading.\n\nThe editor, edit.prg is nano-like for now, but supports line numbers and auto-indent and word wrapping.\n\nIt's all working and has a thorough test harness, using the Nivix emulator for Sentinel 65X, which has cycle-accurate W65C265S CPU emulation.\n\nAnd I feel like I can't release any of it because it's 100% slopware. Carefully designed, well-tested, fully functioning slopware.",
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