| [These SYNTAX readers would like to hear ...] |
Readers from Kentucky, Nevada and Ontario. |
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| 4K RAM Units Available Soon |
Static Memory Systems will sell 4K RAM packs for ZX80s and MicroAces. |
MicroAce, Sinclair ZX80 |
| Annotated 4K ROM: LOAD Routine |
Assembly for the 4K ROM’s LOAD routine. LOAD begins in ROM location 0206H, or 518d. |
Sinclair ZX80 |
| Beginners - Analyzing the Problem |
The first step in solving a problem with a computer is analyzing how you would solve it without one. |
Sinclair ZX80, Sinclair ZX81 |
| Beginners' Dimensioned Arrays |
Although BASIC uses simple English commands, the DIM statement is one of those that takes a little explanation. |
Sinclair ZX80, Sinclair ZX81 |
| Dear Editor |
Letters with improvements programs; corrections; math error in 8K ROM; converting 4K ROM programs to 8K ROM; ZX80 users online. |
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| Full Annotated 4K ROM Listing |
Sinclair’s complete 4K ROM listing with original designer’s annotations will be available from SYNTAX by August. |
Sinclair ZX80 |
| Loan Amortization Schedule |
Program gives you monthly payments and loan amortization information. |
Sinclair ZX81 |
| Machine Language Programming - Logical Functions |
Differences between 4K and 8K ROMs can be overcome with machine language. |
Sinclair ZX80, Sinclair ZX81 |
| Maze Options |
Otis Imboden’s 2-line Maze-O-Graphics inspired several readers. Here are their 4K ROM maze improvements , offering different methods. |
Sinclair ZX80 |
| 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. |
MicroAce |
| Publications Guide |
Lists over 350 computer, technology, electronics, and business magazines, newsletters, and report/database services. |
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| 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. |
Sinclair ZX80 |
| Syntax Error |
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| The ZX80 Companion |
Review of the book published by LINSAC. |
Sinclair ZX80 |
| Writing Game Programs |
How do you start writing game programs? |
Sinclair ZX80 |
| ZX80 Check Book |
Program records up to 10 transactions at a time. Keep them on file by storing the program with the variables intact. |
Sinclair ZX80, Sinclair ZX81 |
| 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. |
Sinclair ZX81, Timex/Sinclair 1000 |
