| Book Review: Introduction to 2068 Machine Code |
Review of Lloyd Dreger’s 213+ page self-study manual for Z80 assembly language on the TS2068. Covers computer number systems, Z80 code, internal machine code, and peripherals. Reviewer notes addresses are primarily in decimal rather than hexadecimal and considers this a good reference work. Highly recommended. |
Timex/Sinclair 2068 |
| Book Review: The T/S 2068 ROM Manuscript |
Review of Lloyd Dreger’s 248+ page commented TS2068 ROM disassembly with assembly language notes and cross-references to the Sinclair Spectrum. Reviewer notes addresses are in decimal with Z80 code in hexadecimal, and that the 9-page Spectrum/Timex cross-reference table provides both decimal and hex addresses. Serious students still need Dr. Logan’s Spectrum ROM Disassembly for program |
Timex/Sinclair 2068 |
| Magic Birthday Square |
A 2068/Spectrum BASIC program that generates a magic square derived from a birthday number. Uses mathematical relationships to create a grid of numbers with equal row/column sums. Article notes the program is fun but not reliable for gambling. |
Timex/Sinclair 2068, Type-in program |
| Orbit Simulator |
A QL SuperBASIC program simulating orbital mechanics around a central planetary body. The orbiter starts above the planet and can be given directional thrust using the joystick, allowing demonstration of circular and elliptical orbits. Converted from a C-128 version written by Doug Fries. Author notes the QL runs the program faster than the C-128. |
Sinclair QL, Type-in program |
| Product Review: PC8300 |
Brief product review of the PC8300 ZX81/TS1000 compatible clone from American Design Components. Describes keyboard similar to the TS1500, added joystick port, TV/monitor ports, power LED, sound, auto line numbering, and built-in 2K RAM. Notes tape programs are auto-detected and converted to PC8300 format on load, making PC8300 programs incompatible with the TS1000. |
Lambda 8300, Timex/Sinclair 1000 |
| The New Tax Law and You |
Analysis of the 1986 Tax Reform Act’s impact on 1986, 1987, and 1988 tax liabilities, presented as six comparison tables with a detailed worked example for a two-income household. Shows changes to medical deduction thresholds, elimination of sales tax and union dues deductions, and modified standard deductions. Includes a short QL program to reproduce the |
Timex/Sinclair 2068, Type-in program |
| TimeLinez Begins Desk-Top Publishing Experiments |
Editorial describing the transition to desktop publishing using the Front Page QL software from GAP Software. Explains the workflow for creating the masthead using Artworks on the 2068 and converting to RLE for import into Front Page. Candidly reviews Front Page’s bugs (corrupted files on save, no file deletion, minimal error trapping) and its strengths |
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| TS1000 Clone Hardware Analysis |
Detailed chip-level and hardware analysis of a TS1000-compatible clone, described in the issue’s table of contents as Bob Orrfelt digging into a home-made TS1000 clone. Specific article content is heavily disrupted by OCR column layout breakdown. |
Lambda 8300, Timex/Sinclair 1000 |
