Projects / Verbum

Verbum

Verbum is a program to punch human-readable text on paper tape, for use as a leader before a program. It was written for the PDP-1 Restoration Project, but should be useful for other computers with paper tape readers as well. The 64-character subset of ASCII printable characters (codes 20 through 5F hexadecimal) are available as a 5x7 font. Only the least significant seven channels of eight-level tape are used, with the most significant channel always zero (no holes), so that the readin mode of the PDP-1 will ignore the text.

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  •  13 May 2005 17:32

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