petcat(1) C64 Program Development petcat(1)NAMEpetcat - convert and display PETSCII or BASIC files
SYNOPSISpetcat [ -text | -<version> | -w<version> | -k<version> ] [ -l hexaddr
] [ -c | -nc ] [ -o outfile ] [ -skip offset ] [ -- ] [ file list ]
DESCRIPTIONpetcat converts input files from the most common CBM file formats into
printable ASCII form and writes to standard output. The type of input
file is determined automatically, if possible, and appropriate conver‐
sion is performed. Since a few of the BASIC versions have keywords
defined differently, the right conversion has to be selected on the
command line. Where such confusion cannot happen, automatical recogni‐
tion of input is used. This is useful when expanding several files at
once or if the program contains code for several versions, selected
according to the hardware; eg. Simon's Basic vs. Basic 7.0.
Please note that each input file is converted individually, but the
output is produced as continuous flow. Also, all input files that are
read trough a pipe, are concatenated before they reach petcat so any
machine language section in between the BASIC programs causes all con‐
secutive files to be taken as one machine language program. For that
reason files containing machine language parts attached to them must be
input separately, otherwise the remaining files won't be expanded.
petcat recognizes normal PETSCII text files (SEQ), program files con‐
taining directory listing, and BASIC programs. Both the original CBM
files and files with a PC64 `P00' header are accepted. The different
BASIC versions are not automatically distinquished, but standard C64
and C128 versions are used as default.
In order to tokenize a text file into a BASIC binary file the desired
BASIC version must be exclusively specified so that correct set of key‐
words will be used. If line numbers are not found in the beginning of
each program line, the cruncher creates the missing line numbers by
adding 2 to the numeric value of previous one. Since also line numbers
deviating from strictly ascendind order are accepted, care must be
taken when editing such a program on a C64 again.
Clarification
Since CBM programs usually contain unprintable characters, a way to
spesify them has been created. Normally, petcat uses the same codes as
most printers, but for tokenizing programs scanned from magazines, it
can use the following convention:
{DOWN} stands for single control code
{6 RIGHT} contains amout of consecutive codes
List of valid mnemonics:
{wht} {dish} {ensh} {swlc} {down} {rvon} {home} {del} {esc}
{red} {rght} {grn} {blu} {orng} {F1} {F3} {F5} {F7} {F2}
{F4} {F6} {F8} {sret} {swuc} {blk} {up} {rvof} {clr} {inst}
{brn} {lred} {gry1} {gry2} {lgrn} {lblu} {gry3} {pur}
{left} {yel} {cyn}
List of alternate mnemonics:
{wht} {up/lo lock on} {up/lo lock off} {return} {lower
case} {down} {rvs on} {home} {delete} {esc} {red} {right}
{grn} {blu} {orange} {f1} {f3} {f5} {f7} {f2} {f4} {f6}
{f8} {shift return} {upper case} {blk} {up} {rvs off} {clr}
{insert} {brown} {lt red} {grey1} {grey2} {lt green} {lt
blue} {grey3} {pur} {left} {yel} {cyn}
OPTIONS-l load_address
Specify load_address (in hex) for tokenized program.
-c Causes petcat to interpret also control characters. By
default, these strings are the same as used by printers. How‐
ever, an alternate set is attempted whenever none within the
primary set matches. Default is ON, unless text mode is
selected.
-nc Suppress control codes.
-f Force overwrite of existing output file. Default true.
-h Print filename and start address for each Basic file expanded.
Default true.
-nh Suppress file header in printout.
-o file Redirect output to the specified file. This option overrules
-h. When file has extension `.P00' and also -w option is spec‐
ified, the PC64 file header is written automatically. .P00 file
cannot be written on stdout but to a file only.
-skip offset
Skip offset bytes in the beginning of input file.
-text Force text mode even if the input file looks like a Basic pro‐
gram, i.e. the first byte in file is 01.
-k<version>
Just prints all valid keywords for the specified Basic version.
Without any version, all names of supported BASIC versions are
listed instead.
-w<version>
Tokenise program listing using keywords set from the specified
Basic version.
-<version>
Changes the set of keywords for the specified Basic version and
expands tokenized input file. Without this option petcat uses
V7.0 keywords in expanding.
Versions
1 Basic 1.0
2 Basic 2.0
a Basic 2.0 with AtBasic
t Basic 2.0 with Turtle Basic
super su se Basic 2.0 with Super Expander
simon si Basic 2.0 and Simon's Basic
speech sp Basic 2.0 with Speech Basic v2.7
4 Basic 4.0
4e Basic 4.0 Extension
3 Basic 3.5
7 Basic 7.0
10 Basic 10.0
RESTRICTIONS
Line numbers must be less than 65536. Maximum line length is 255
bytes. Leading white space is ignored. Blank lines and line numbers
not followed by any text are rejected. While expanding, Machine Lan‐
guage section concatenated to a BASIC program is ignored. While
crunching, control codes that appear outside quotes are not inter‐
preted. The low order byte of load address must be "01".
SEE ALSOcat(1), tr(1), sed(1), fvcbm(1), petlp(1), cbmconvert, iso2asc(1),
ASCII(7), CBM Tokens Documentation, CBM's Programmers' Reference Guide
series
AUTHOR
Jouko Valta (jopi@stekt.oulu.fi)
Thanks to
Frederik Ekman (d91fe@lelle.pt.hk-r.se)
Marko M�kel� (msmakela@nic.funet.fi)
Russell Alphey (r.alphey@dce.vic.gov.au)
Andr� Fachat (a.fachat@physik.tu-chemnitz.de)
Onno Ebbinge (ebbin200@hio.tem.NHL.NL)
Frank Kontros (jeno@kontr.uzhgorod.ua)
VICE 12 Dec 1996 petcat(1)
