[author : Marlin Ouverson] #Edito
Extract : « First things first. Our cover has changed in order to reflect a new approach to the magazine publishing business. We are not selling out to the highest bidder; DDJ has always been at the cutting edge and is staying that way. Doc won’t settle for less!
The real change has been in the computer hobbyist market. No longer a group of bleary-eyed hackers, we have acquired importance by filling people’s needs. [...] »
TABLE OF CONTENTS
#Listing #C
[author : William A. Gale] #Languages #Listing #Programming
Extract : « Pidgin is a low-level, machine-independent programming language. Because it is easily compiled, it is suitable for systems programming applications where portability is the foremost requirement. The original design purpose was cross-time portability, so work done on my current machine could be cumulative for my next machine. But it should also be suitable for describing to a Z80 what I’ve done on my 6502. People with a homebrew system that nobody else writes software for may be particularly interested in a pool of machine-independent software.
Pidgin can be compiled by a macro processor that recognizes nine paramenters each of length one. Such a macro processor is easy to write, the more difficult part being to write the macros for the 80 statements of Pidgin. A macro processor written in Pidgin is included with this article. It takes 500 lines with 8000 characters including comments, and compiles into 3.5 kilobytes (with another 5 kilobytes for macro storage). [...] »
[author : D. J. Yates] #Algorithm #Listing #BASIC #Time
Extract : « [...] This article describes a simple "software" clock for use in a microcomputer with the most elementary internal clock. [...]
The task of writing a BASIC routine or function to keep track of either elapsed time or time of day is a simple matter and Listing 1 is that of a program including a subroutine which returns the time of day (since midnight) in hours, minutes and (whole) seconds and also as total elapsed seconds since initialization. [...] »
[author : J. W. Pehoushek] #Listing #BASIC #GamePuzzle #Simulation
Extract : « Having been introduced to the cube by my son, a Stanford com puter science student, I quickly discovered the fascination with the device which has led to formation of Cubie Clubs at several universities. Further thought on the matter led me to conclude that before attacking the various theories involved in solving the cube problem, a tool for exploring moves would be convenient. A few hours with the home computer resulted in creation of the program BASIC RUBIK’S, a cube simulator. [...] »
[author : Dave Cortesi] #Event #Book #OtherMagazine #Software
Extract : « SCRIBBLE and MINCE Group [...]
Plan Well Ahead [...] The New York Computer Expo [...]
Settle Down for a Good Read [...] PET Interfacing by Downey and Rogers (262 pp, $17, from Group Technology, Ltd.). [...]
Electronic Circuits Notebook from McGraw-Hill (344 pp, $32.50). [...]
The same publisher has released the User’s Guidebook to Digital CMOS Integrated Circuits by Eugene R. Hnatek (339 pp, $24.50). [...]
RCA has what should be a good companion volume to the one above: the latest edition of 688-page COS/MOS Integrated Circuits data book. [...]
Settle Down for a Free Read (catalogs) [...]
Two Unusual Periodicals [...]
Software News, a monthly tabloid devoted to computer software ($20 per year). [...]
Computer Products, a bi-monthly magazine that eliminates all that annoying editorial matter; it contains nothing but glossy display ads, page after slick, 11” by 14” page of them. $6 per issue. [...]
TRS-80, Speech Impediment Removed [...]
... Writes for Other CPUs [...]
... Burns PROMs for Them, Too [...]
Apple II Bus Stretches Out [...]
Oh Boy, A New Acronym [...] Xicor to announce NOVRAM. That stands for "non-volatile RAM." [...]
A CP/M Software Index [...]
A Diskette Conversion Service [...]
Digital Research MP/M-86 Is Out [...]
OASIS Spreads Out [...] »
#Experience #Listing #BASIC
Extract : « The Doctor is Overwhelmed
The first Clinic produced a very gratifying response. More than 60 readers took the trouble to write, and PCC thanks all of them. We’re obviously onto something good with the Clinic and we’ll try to keep it going (but see the exhortation at the end). [...] »
#Book
Extract : « Programming the Z8000 By Richard Mateosian Published by Sybex $15.95, 297 pages [...]
BASIC Scientific Subroutines Vol. I by F. R. Ruckdeschel Published by McGraw-Hill $19.95, 317 pages [...]
The PLL Synthesizer Cookbook By Harold Kinky Published by TAB $7.95, 279 pages [...]
Conversational Languages By I. Kupka and N. Wilsing Published by John Wiley & Sons $27.75, 117 pages [...] »