| [Rochester Institute of Technology offers two intensive computer courses for deaf adults...] |
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| [The 8K ROM produces a different screen display than the 4K ROM.] |
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Sinclair ZX80 |
| [These SYNTAX readers would like to hear...] |
Readers from California and Texas. |
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| 4K Programs on 8K ROM |
8K ROM won’t load 4K tapes. |
Sinclair ZX80 |
| 4K ROM Listing - Initialization |
Computer initialization routine in 4K ROM. |
Sinclair ZX80 |
| 8K ROM Changes |
Revisions to previous programs for 8K ROM. |
Sinclair ZX80 |
| 8K Syntactic Sum |
Modified version for 8K ROM. |
Sinclair ZX80 |
| All-Purpose Beeper |
Circuit to emit a “beep” every time your ZX80 or MicroAce reads from or writes to a selected memory address. |
Sinclair ZX80 |
| Beginners' Computing Magazine |
OnComputing changes its name to Popular Computing. |
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| CAI Update |
CAI Instruments is almost ready with their Widget series peripherals for ZX80s and MicroAces. |
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| Dear Editor |
Letters about new 8K ROM features; keyboard problems; video blanking; building additional RAM; interfacing to real world; improvements to bar graphics program; printing statements. |
MicroAce |
| EZUG Newsletter |
The Educational ZX80/1 Users’ Group (EZUG) publishes a newsletter each month for ZX80 users. |
Sinclair ZX80, Sinclair ZX81 |
| Inverse Cryptology |
Challenging code breaking game for 2 uses 4K ROM and 1K RAM. |
Sinclair ZX80 |
| Keyboard Beeper |
Review of Burnett Electronics’ keyboard beeper. |
Sinclair ZX80 |
| Machine Code Programming - Multiplication and Division |
Multiplication and division require more thought and attention to detail. |
Sinclair ZX80 |
| Matrix Drawing |
Draws characters on a 13×20 matrix. |
Sinclair ZX80 |
| Microperipheral Abandons Modem |
Gave 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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| Modifying Hex Monitor for 4K |
Hex Monitor (May 81) stores ML programs without shielding them from BASIC. These changes load ML to reserved space. |
Sinclair ZX80 |
| News From 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. |
MicroAce, Sinclair ZX80 |
| PEEK, POKE & CHR$ for Beginners (4K) |
Explanation of the commands and functions. |
Sinclair ZX80 |
| Placing USR Calls in 4K, 8K |
Differences between both ROMs and machine code locations. |
Sinclair ZX80 |
| Programmed Responses - Latin Roots |
Drill for students of Latin and Greek. |
Sinclair ZX80 |
| Programming Language Terminology |
Definition of terms. |
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| Syntax Errors |
Errors with Martin Iron’s line renumbering program. |
Sinclair ZX80 |
| ZX80 Prestel Model |
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. |
Sinclair ZX80 |
