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Revision 1.22, Sun Sep 8 22:43:46 2019 UTC (4 years, 8 months ago) by schwarze
Branch: MAIN
CVS Tags: OPENBSD_7_5_BASE, OPENBSD_7_5, OPENBSD_7_4_BASE, OPENBSD_7_4, OPENBSD_7_3_BASE, OPENBSD_7_3, OPENBSD_7_2_BASE, OPENBSD_7_2, OPENBSD_7_1_BASE, OPENBSD_7_1, OPENBSD_7_0_BASE, OPENBSD_7_0, OPENBSD_6_9_BASE, OPENBSD_6_9, OPENBSD_6_8_BASE, OPENBSD_6_8, OPENBSD_6_7_BASE, OPENBSD_6_7, OPENBSD_6_6_BASE, OPENBSD_6_6, HEAD
Changes since 1.21: +7 -5 lines 

Be more specific regarding which encoding this simulator generates:
the existing text encouraged the misconception that punched card
encodings were somehow standardized, which they were not.  Lots of
different encodings existed, and the one simulated here was a
proprietary one of one specific vendor (GE).  Also correct the
history: the folks at Bell Labs already played with this.

HISTORY mistake noticed by Sevan Janiyan <venture37 at geeklan
dot co dot uk>, who also agrees with the final patch.

tweak and OK jmc@

.\"	$OpenBSD: bcd.6,v 1.22 2019/09/08 22:43:46 schwarze Exp $
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.\"	@(#)bcd.6	8.1 (Berkeley) 5/31/93
.\"
.Dd $Mdocdate: September 8 2019 $
.Dt BCD 6
.Os
.Sh NAME
.Nm bcd
.Nd reformat input as punch cards
.Sh SYNOPSIS
.Nm
.Op Fl l
.Op Ar string ...
.Nm
.Fl d
.Op Fl l
.Sh DESCRIPTION
The
.Nm bcd
command reads the given input and reformats it as an ASCII art
representation of punched cards for the GE 635 and GE 645 computers
used at Bell Labs in the late 1960s and early 1970s.
Acceptable input are command line arguments or the standard input.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl d
Decode punch cards on the standard input back to ASCII.
.It Fl l
Create or decode 80 column punch cards.
The default is 48 columns.
.El
.Sh SEE ALSO
.Xr ppt 6
.Sh STANDARDS
.Rs
.%I ISO 1681:1973
.%R "Information processing--Unpunched paper cards--Specification"
.Re
.Pp
.Rs
.%I ISO 1682:1973
.%R "Information processing--80 columns punched paper cards--Dimensions and location of rectangular punched holes"
.Re
.Sh HISTORY
The
.Nm
game first appeared in
.At v6 .