EXEPACKG
Jump to navigation
Jump to search
EXEPACKG.PRG, RENPACK.PRG and UNPACKG.PRG ========================================= (c) 1991 Dimitri Koveos ( dimitri@cix.compulink.co.uk) 246, Tilehurst Rd, Reading RG3 2NE Berks. UK These three programs are SHAREWARE and, therefore, a modest contribution of Å“5 is expected as a registration fee if you decide to use them for more than 30 days. They have been tested thoroughly by me and are assumed to be reasonably bug-free (I have used EXEPACK on commercial programs I have been responsible for). Feel free to share them with anybody who would have them! Like all shareware, commercial uses are expressly excluded. I would negotiate a licencing fee with any interested parties. Needless to say there is no guarantee what-so-ever nor am I going to accept any responsibility for any disasters incurred through using these programs (eg head crashes including those of your hard disk) although none have happened to me (Honest!). EXEPACKG.PRG: EXEPACKG is a small GEM utility which allows you to compress executable files into an executable form. The compression algorithm used is a Lempel-Ziv variant which can achieve up to 50 % reduction (or more) on most large files (Hyperpaint, Hyperdraw, LDW-Power, Timeworks DTP, First Word Plus, the single-file Carrier Command etc). It was written in Hisoft's Lattice C V5 which after some teething problems seems to have settled down to being the top development system for the ST (and I haven't had ANY updates yet...). The run-time module which forms part of the compressed file was written in Hisoft's GENST2 68000 Assembler (Andy Pennel's) and runs VERY fast. (I haven't tried running EXEPACKG on a 520 ST but it should work). RENPACK.PRG: As EXEPACKG does not want to destroy the original, a different filename must be given as the destination. However, if you then just rename the compressed file to something else, you'll find that the program no longer runs! (The reason for this is that the original filename is stored in the file header). The answer to this problem is provided in the form of RENPACK.PRG, a simple GEM-based Rename utility which patches the new name back into the compressed file. You can also rename ordinary files safely as only EXEPACKG-ed files are patched. UNPACKG.PRG Well, this is obvious! Provided a program has been compressed using EXEPACKG.PRG, UNPACKG.PRG will produce a file which is the original, uncompressed form of the program. Reading, UK 15-October-1991
Back to Packer/Depacker