Volume: 2
Issue: 6
Articles
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PEEK, POKE & CHR$ for Beginners (4K)ZX80 Type-in program Explanation of the commands and functions.
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Programming Language TerminologyDefinition of terms.
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Matrix DrawingZX80 Type-in program Draws characters on a 13×20 matrix.
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8K ROM ChangesZX80 Revisions to previous programs for 8K ROM.
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8K Syntactic SumZX80 Type-in program Modified version for 8K ROM.
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Modifying Hex Monitor for 4KZX80 Hex Monitor (May 81) stores ML programs without shielding them from BASIC. These changes load ML to reserved space.
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[These SYNTAX readers would like to hear...]Readers from California and Texas.
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Dear EditorMicroAce Letters about new 8K ROM features; keyboard problems; video blanking; building additional RAM; interfacing to real world; improvements to bar graphics program; printing statements.
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Keyboard BeeperZX80 Hardware review Review of Burnett Electronics’ keyboard beeper.
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Programmed Responses - Latin RootsZX80 Type-in program Drill for students of Latin and Greek.
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ZX80 Prestel ModelZX80 Type-in program Model of the British Prestel data base tree structure. It can be used with your own data for display to show how Prestel data is accessed.
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Placing USR Calls in 4K, 8KZX80 Tutorial Differences between both ROMs and machine code locations.
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Machine Code Programming - Multiplication and DivisionZX80 Tutorial Multiplication and division require more thought and attention to detail.
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All-Purpose BeeperZX80 Hardware project Circuit to emit a “beep” every time your ZX80 or MicroAce reads from or writes to a selected memory address.
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Inverse CryptologyZX80 Type-in program Challenging code breaking game for 2 uses 4K ROM and 1K RAM.
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Beginners' Computing MagazineOnComputing changes its name to Popular Computing.
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4K Programs on 8K ROMZX80 8K ROM won’t load 4K tapes.
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Syntax ErrorsZX80 Errors with Martin Iron’s line renumbering program.
- [Rochester Institute of Technology offers two intensive computer courses for deaf adults...]
- [The 8K ROM produces a different screen display than the 4K ROM.]ZX80
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EZUG NewsletterZX80 ZX81 The Educational ZX80/1 Users’ Group (EZUG) publishes a newsletter each month for ZX80 users.
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Microperipheral Abandons ModemGave up plans to produce ZX80 modems because they had to add many hardware features not in the ZX80. Modem would have cost more than the original computer.
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News From MicroAceZX80 MicroAce MicroAce and ZX80 owners who want the flicker-free feature of the ZX81 can get it with an add-on board from MicroAce. The board contains only 6-7 chips and solders onto your PC board. The cover fits over the machine with the board installed, although the fit is a little tight on a ZX80.
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CAI UpdateCAI Instruments is almost ready with their Widget series peripherals for ZX80s and MicroAces.
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4K ROM Listing - InitializationZX80 Tutorial Computer initialization routine in 4K ROM.