Syntax/Syntax ZX80 v2 n7

Volume: 2
Issue: 7

Articles

  • Beginners - Analyzing the Problem
    The first step in solving a problem with a computer is analyzing how you would solve it without one.
  • Machine Language Programming - Logical Functions
    Differences between 4K and 8K ROMs can be overcome with machine language.
  • The ZX80 Companion
    Review of the book published by LINSAC.
  • Dear Editor
    Letters with improvements programs; corrections; math error in 8K ROM; converting 4K ROM programs to 8K ROM; ZX80 users online.
  • [These SYNTAX readers would like to hear ...]
    Readers from Kentucky, Nevada and Ontario.
  • ZX80 Check Book
    Program records up to 10 transactions at a time. Keep them on file by storing the program with the variables intact.
  • Loan Amortization Schedule
    Program gives you monthly payments and loan amortization information.
  • Annotated 4K ROM: LOAD Routine
    Assembly for the 4K ROM’s LOAD routine. LOAD begins in ROM location 0206H, or 518d.
  • Publications Guide
    Lists over 350 computer, technology, electronics, and business magazines, newsletters, and report/database services.
  • Writing Game Programs
    How do you start writing game programs?
  • ZX81, Sinclair Printer News
    Sinclair has submitted the ZX81 to the FCC for approval for sale in the US. Nigel Searle of Sinclair expects to ship American ZX81s this year, maybe September.
  • Syntax Error
  • Maze Options
    Otis Imboden’s 2-line Maze-O-Graphics inspired several readers. Here are their 4K ROM maze improvements , offering different methods.
  • 4K RAM Units Available Soon
    Static Memory Systems will sell 4K RAM packs for ZX80s and MicroAces.
  • News from MicroAce
    MicroAce plans to sell plug-in 16K RAM boards with 3 extra connector slots. The extra connectors will be 50 pin, not 46 (as the rear edge connector is), because of the unavailability of 46 pin plugs. MicroAce is still without a full-time manager, but Bill Clark, engineer, is serving temporarily until they find a full-timer.
  • Full Annotated 4K ROM Listing
    Sinclair’s complete 4K ROM listing with original designer’s annotations will be available from SYNTAX by August.
  • Sinclair to Replace Faulty 8K ROMs
    A new ROM supplier produced 8K ROMs with a bug, and Sinclair has stopped shipping until a supply of perfect ROMs arrives.
  • Beginners' Dimensioned Arrays
    Although BASIC uses simple English commands, the DIM statement is one of those that takes a little explanation.
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