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- ###### ###### Issue #6
- ################## Sept. 5, 1993
- ########
-
- -------------------------------------------------------------------------------
- Editor's Notes:
- by Craig Taylor
-
- School, 2 jobs, a play, and other work has seriously restricted the amount
- of time that I am able to devote to Commodore Hacking. What I am looking at
- doing now is to stop writing articles for Commodore Hacking and hoping that
- I'll still have enough time to write these notes, and organize and pull all
- the other articles by other contributors together. The two articles I
- had hoped to include in this issue : the one about multi-tasking and
- about the 1351 have again been delayed. I've decided to go ahead and
- release issue 6 and hopefully will have them in the next issue.
- (Remember: You get what you pay for.. *smile*)
-
- As always, Commodore Hacking is constantly looking for articles, notes,
- short little programs, what-not on any side of the Commodore 64 and 128 -
- primarily on the technical or hardware side. If you think you have something
- in mind, or already written then feel free to drop me a line letting me
- know.
-
- In regards to several queries recently about reprinting individual articles
- that have appeared in Commodore Hacking. You may reprint Commodore Hacking
- and redistribute in whole, freely. For use of individual articles you _must_
- contanct the individual author as they still retain rights to it. Please see
- the legal notice / mumbo below.
-
- I recently recieved some mail from wolfgang@halcyon regarding a disk
- magazine that he was in the process of starting and he has written the
- following preview of a disk magazine that looks to be exciting:
-
- "_Scenery_, a new disk-magazine focusing on the american and
- european demo scenes, will soon be available for download at a
- site/BBS near you! With articles on everything from coding to
- instrument synthesis to art, _Scenery_ will be the definitive word
- when it comes to creating a demo, or simply coding in general.
- Articles are being written by some of the top names in the scene,
- and promise to help everybody from the Basic Baby to the ML Mogul!
- Set to be released mid-August, _Scenery_ will hopefully be a worthy
- edition to the likes of Coder's World and C=Hacking. I am making
- the magazine available on various Internet sites, so look for it. We
- are always on the lookout for art, music, and coding talent, and if
- you'd be interested in submitting an article for publication, or
- simply have a question or comment, please mail me at
- 'wolfgang@halcyon.com'. Thanks.. and see you on the Net!"
-
- ================================================================================
-
- Please note that this issue and prior ones are available via anonymous FTP
- from ccosun.caltech.edu under pub/rknop/hacking.mag and via a mailserver
- which documentation can be obtained by sending mail to
- "duck@pembvax1.pembroke.edu" with a subject line of "mailserver" and the
- line "help" in the body of the message.
-
- ================================================================================
-
- NOTICE: Permission is granted to re-distrubte this "net-magazine", in
- whole, freely for non-profit use. However, please contact individual
- authors for permission to publish or re-distribute articles seperately.
- A charge of no greather than 5 US dollars or equivlent may be charged for
- library service / diskette costs for this "net-magazine".
-
- ================================================================================
- In This Issue:
-
- DYCP - Horizontal Scrolling
-
- DYCP - is a name for a horizontal scroller, where characters go smoothly
- up and down during their voyage from right to left. One possibility is a
- scroll with 8 characters - one character per sprite, but a real demo coder
- won't be satisfied with that.
-
- Opening the borders
-
- VIC has many features and transparent borders are one of them. You can not
- make characters appear in the border, but sprites are displayed in the
- border too.
-
- A Heavy Duty Power supply for the C-64
-
- This article describes how to build a heavier duty power supply for your
- Commodore 64 computer and includes a full schematic in GeoPaint format.
-
- LZW Compression
-
- LZW is perhaps the most widely used form of data compression today. It
- is simple to implement and achieves very decent compression at a fairly
- quick pace. LZW is used in PKZIP (shrink),PKARC (crunch), gifs,V.42bis
- and unix's compress. This article will attempt to explain how the
- compression works with a short example and 6502 source code in Buddy
- format.
-
- THREE-KEY ROLLOVER for the C-128 and C-64.
-
- This article examines how a three-key rollover mechanism works for the
- keyboards of the C=128 and C=64 and will present Kernal-wedge
- implementations for both machines. Webster's doesn't seem to know, so I'll
- tell you that this means that the machine will act sensibly if you are
- holding down one key and then press another without releasing the first.
- This will be useful to fast touch typers.
-
- ================================================================================
-
-