Category: File Checkers / Fixers / Analyzers
Downloads: 9
zip0 Craig's Parallel Cyclic Redundancy Check

Craig's Parallel Cyclic Redundancy Check is a neat bit of code for the Commodore 64 that will give you the CRC value of a file on your floppy drive.  Just edit the F$ value on line 1 to match the name of the file on the disk you want the CRC for.

parallel-cyclic-redundancy-check-1
2020-11-16 English Commodore 64 1.55 KB 356 Download
d64 floppy1 CRC32

CRC32 is an error checking program. When run, the program will ask for the name of a file. It will scan the file and report the "CCITT CRC-32" value. When transferring a program over a modem or with a copy program, you can run this program on that file before and after to make sure you got a 100% identical copy. Docs are on the disk. This program will work both on a c64 and c128.

crc32
2015-03-22 English Commodore 64 3.8 KB 666 Download
d64 floppy2 File Tester 2

File Tester 2 examines files on a disk for file, length, link and BAM errors.  It won't work with Relative Files (REL) or GEOS files (VLIR).

file tester 2 1
2015-04-14 English Commodore 64 6.15 KB 614 Download
d64 floppy3 Kwiksum 1541

Written by Will Corley, Kwiksum is a file utility that lets you get the total bytes, blocks and checksum value for a file.

kwiksum 1541
2015-04-17 English Commodore 64 2.06 KB 606 Download
zip4 New Directory 64

New Directory by Kevin Hisel (August 2nd, 1986) - Not to be confused with the other "New Directory" utility posted on this site that lets you change the order of files on a disk, this utility instead will tell you some useful information about the files on a disk, such as the starting Track & Sector and the total space used by all the files.  It's also handy because once loaded, it hangs out in memory at location 49152 so that you can change disks and just SYS 49152 to run it again.  This might come in handy if used in conjunction with a disk checker such as "Disk Tester v1.0" to find out exactly which file is in a bad area of the disk so you can at least salvage the other files.

new-directory-64-1
2023-04-30 English Commodore 64 37.01 KB 74 Download
d64 floppy5 Rescratch

Rescratch can save your bacon if you accidentally delete a file.  This quick fix will unscratch your file.

rescratch 1
2015-04-22 English Commodore 64 1.59 KB 735 Download
d64 floppy6 Sacaid v1.0

This tools is along the lines of a crc32 check but uses it's own formula. Basically you run it on a disk, select the files you want checks for and it creates a file called "sacaid diskccheck" on the disk that you use to check the files after a transfer. The fastloader built into this tools doesn't work with VICE.

sacaid v1.0
2015-03-22 English Commodore 64 4.63 KB 620 Download
d64 floppy7 Unsplatter

Written by Rick Kephart and released on September 6th, 1989. Unsplatter will fix files that weren't properly closed and have an * in the directory.

unsplatter
2015-03-22 English Commodore 64 5.81 KB 640 Download
d64 floppy8 Vitals 1541

Written by Will Corley. Vitals will analyze a file on disk and give you the following info: file type, block size, number of bytes, start address, starting track & sector.

vitals 1541
Will Corley 2015-03-22 English Commodore 64 2.24 KB 645 Download
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