Syntax/Syntax ZX80 v3 n5

Volume: 3
Issue: 5

Articles

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Title Description Computers
16K RAM power
2K Conversion with 6116s ZX81 will accept two 2114 RAM chips or one 6116 RAM, for total of 2K. Sinclair ZX81
8K/1K Slot Machine Another free sample software review—a program directly from New England Software’s tape. Sinclair ZX80
Beginner's Basic -- INKEY$ Function The INKEY$ function, though more obscure than commands like SAVE and RUN, is simple to use and adds a nice touch to your programs. Sinclair ZX80, Sinclair ZX81
Beginners' ML -- Register to Register Examines the loading, adding and subtracting instructions. Number 5 in series. Sinclair ZX80, Sinclair ZX81
Bytesavers Hint If you are using a PRINT after a line number simply to add an empty line, use two commas instead. Sinclair ZX80, Sinclair ZX81
Dear Editor Letters about expanding the Sinclair; software available from Banta; 16K RAM pack; reverse video; Sinclair repair department; parts from Radio Shack.
Defective 8K ROMs Defective ROMs and notes about power converter in 16K RAM pack. Sinclair ZX81
IC Inventory This program, written for the CD4000 series of ICs and using the 4K ZX80 ROM and at least 2K RAM, can be adapted for any series of things following consecutive numbers. Sinclair ZX80, Sinclair ZX81
Logic Chip Failure Symptoms Reader deduced that his ZX81 logic chip (ICl) had failed from the keyboard line and diode matrix. Sinclair ZX81
Memory Decoding Above 16K Sinclair made the ZX81 RAM easy to decode up to 16K, but you may want to add memory beyond this point. To add more than 16K memory to your ZX80/81, you must do more than just: /A13 AND /A14 AND /A15 = /ROM CS. You’ll also need to account for the behavior of the display Sinclair ZX80, Sinclair ZX81
Microsync Speaks Interview with Bob Allen, service manager with Microsync.
Need fast ZX80/ZX81 service? Service firm repaired partially-assembled ZX81. Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000
New Product Announcements (Syntax v3 n5) Darkstar from F/22 Press for photographers; products from RKL Systems, Memotech.
Numbers Held Inexactly on the ZX81 The largest is really this 39-digit number: 170141183420855150474555134919112130560. Sinclair ZX81, Timex/Sinclair 1000
Problem-Solving Circuits If your power line voltage is 120V or higher and you use a 16K RAM, heat build-up in the ZX81 is a problem. Sinclair ZX81
Program Improvements Improvement to program in Numbers Held Inexactly, Mar and Apr 1982. Sinclair ZX81
Putting Forth on ZX80/81s Although BASIC is the most common language for programming microcomputers, it is not the only one. Your ZX80 or 81 can learn FORTH, another high level language. Sinclair ZX80, Sinclair ZX81
Removing ICs safely and cheaply Instead of buying costly tools for IC removal, get binder clips (with springs).
Sinclair UK Unveils New Computer Besides the new machine, Sinclair announced a reported 100K Microdrive for the end of 1982. Sinclair ZX Spectrum
Syntax Errors Correction to Phone Number Generator (Feb 82).
Timex Sinclair 1000 Timex, the watch company that has always built Sinclair computers, will market and distribute Sinclair-based products in North and Central America and the Carribean beginning this year. Sinclair ZX81, Timex/Sinclair 1000
Users' Groups
ZX81 Intro Subroutine for use at the beginning of user-friendly programs. Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000

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