CPI

File Format
Name	CPI
Ontology	Electronic File Formats Fonts CPI
Extension(s)	.cpi
Released	≤1987

For other "CPI" formats, see: Blu-ray Clip info, CPI (ColorLab), Marco Pixel Editor, Cartesian Perceptual Compression.

CPI is a DOS font or font-related file format.

There is also a DRFONT variant.

FreeDOS MODE also supports CPX files in addition to CPI; they are CPI files compressed with UPX as if they were COM files.

Discussion

A CPI file typically contains fonts from a single typeface, with support for multiple code pages, each rendered at multiple font sizes.

A CPI file usually contains either screen fonts, or printer fonts. A printer font can be just the instructions used to select a font that is built into the printer, or it can be actual font data to be downloaded to the printer.

Identification

CPI files begin with 0xff "FONT   ", or 0xff "FONT.NT".

Specifications

• CPI file format, by John Elliott
• The cpi.txt file from PSF Tools (doc/cpi.txt in the source code).
• CPI file format in Ralf Brown's: #01758, #01759, #01760, #01761, #01762, #01763, #01764, #01765

Software

• PSF Tools
  • cpi2psf, psfs2cpi - Read, write
  • cpicomp, cpidcomp - Compress, decompress
  • cpitest - Dump information about the file (not normally installed)
• Deark

Sample files

• DOS5FIX.ZIP → *.CPI
• TEXTFONT.ZIP → *.CPI
• MS-DOS 3.30, at WinWorld → "Microsoft MS-DOS 3.30 (5.25-360k)" → ... → *.CPI