| 16K RAM Pack Schematic | | SQ Syntax Quarterly | Winter 1982 |
| 16K RAM Pack Schematic | | LISTing Newsletter | April 1994 |
| 2050 Modem Schematic | | LISTing Newsletter | September 1997 |
| 2068 Bank Switching, Part IV | | LISTing Newsletter | July - September 1986 |
| 2068 Circuit Diagram | | CATS Newsletter | January 1986 |
| 2068 Dock Connector For More Than Games | | ISTUG Newsletter | March 1988 |
2068 Random Numbers
Describes the random number generation scheme in the 2068. | | CATS Newsletter | May 1985 |
2068 ROM Bug
Documents bug described in tech manual. | | CATS Newsletter | March 1985 |
| 2068 System Variables Usage | | Sincus News | April 1985 |
2068 Tape Tutorial
Detailed description of how the TS 2068 saves programs to tape. Includes information about the record format on tape, all... | | Sinc-Link | November/December |
| 2068 to Spectrum Cross-Reference | H. Edward Weppler | CATS Newsletter | September 1985 |
4K ROM: Display Routine
DISPLAY begins the 4K ROM’s input/output module at 013Ch, or 316d. | | Syntax | August 1981 |
| 8K Basic ROM and 16K-Byte RAM Pack Specifications | | SYNC | May/June 1981 |
8K ROM Monitor Routines
Continuation of article from prior issue examining the 8K ROM. | | Syntax | October 1981 |
8K ROMCALLS
Program scans the ROM up to 7679, building a stack of CALLED and CALLING addresses. Then it sorts and displays... | Martin Irons (K2MI) | Syntax | December 1983 |
| A Comparative ROM Atlas: From Spectrum to TS2068 | | Sincus News | May - June 1988 |
| A Cross-Correlation of the Spectrum ROM Versus TS2068, Part 3 | | LISTing Newsletter | March 1985 |
| A Cross-Correlation of the Spectrum ROM Versus TS2068, Part 4 | | LISTing Newsletter | April 1985 |
| A Handy Keyword and Function Table | | LISTing Newsletter | January 1986 |
| A Keyword Table for the TS 2068 | | Timelinez | April 1984 |
| A New 2068 Bug? | | Sincus News | May - June 1989 |
A Practical Study of System Variables: Put Them to Use with BASIC.
Appendix D of the user manual lists the memory addresses of RAM where most of the TS-2068 system variables are... | | | April 1988 |
A Tip for QL Owners
One user found out the hard way that the QL chassis is grounded, resulting in blown video output. | | Sinc-Link | January/February 1988 |
| Alphabetical Index of North American Suppliers 12/01/84 | | LISTing Newsletter | April 1985 |
An Introduction to Expression Evaluation
In the Sinclair 8K ROM program of the ZX80/81 the “expression evaluator” is to be found at 0F55-111Bh (improved 8K... | | SYNC | May/June 1982 |
Annotated 4K ROM Listing
The 4K ROM SAVE routine listing, including the original designer’s notes. | | Syntax | May 1981 |
Annotated 4K ROM Listing – Systems Variables
Listing tells you the values of all major variables used in the 4K ROM. | | Syntax | October 1981 |
Annotated 4K ROM: LOAD Routine
Assembly for the 4K ROM’s LOAD routine. LOAD begins in ROM location 0206H, or 518d. | | Syntax | July 1981 |
Another Video Primer
Definitions of common terms used to describe video signals. | | SyncWare News | March-April 1987 |
| Archive Character Codes | Peter Hale | Sinclair Timex User Group Newsletter | January - February 1989 |
| Assorted Tipbits | | ISTUG Newsletter | June 1987 |
| Attribute Function Defined | | The Plotter | |
| Bank Switching The Timex/Sinclair 2068 Computer | | LISTing Newsletter | February 1986 |
| Bank Switching the TS2068 (III) | | LISTing Newsletter | May 1986 |
| Bankswitching on the T/S 2000 Series Computers, Part I | | LISTing Newsletter | January - February 1987 |
| Bankswitching, etc…. | | LISTing Newsletter | March - April 1987 |
| Basic at a Stretch | | LISTing Newsletter | Summer 1990 |
BASIC Bank Switching
Short recap of ways to add RAM to the TS 2068 and switch it in/out. | | SyncWare News | Mar-Apr 1986 |
| BASIC Conversion Chart | | The RAMTOP | October 1985 |
| Beginner’s Corner | | CATS Newsletter | April 1986 |
| Beginner’s Corner: D File | | CATS Newsletter | May 1986 |
Beginner’s ROM and RAM Addresses
ROM and RAM addresses in 4K ROM, 1K RAM machines. | | Syntax | May 1981 |
| Binary Manipulation | | CATS Newsletter | July 1985 |
| Bob’s Notebook: Tutorial on Open, Close, Channels & Streams | | Sinc-Link | September/October 1988 |
| Books For the 2068,Spectrum | | The RAMTOP | March 1986 |
| Bug Alert | | Sincus News | September 1984 |
| Comments on Dr. Watson’s Article | | LISTing Newsletter | January - February 1987 |
Comparative ROM Atlas: From ZX Spectrum to 2068
To convert SPECTRUM software to the 2068, you need the location and function of ROM routines in each. You can... | | Syntax | October 1984 |
| Comparative ROM Atlas: From ZX Spectrum to 2068 | | Sincus News | March - April 1988 |
Computus Interruptus
Originally published in SINCUS News. | | ZXir QLive Alive! | Fall 1994 |
| Computus Interruptus 2 | | ZXir QLive Alive! | Spring 1995 |
Computus Interruptus, Part 3
If you try to relocate the machine code to the same 16K memory block as the display file (16-32K), you... | | Sincus News | April 1985 |
Computus Interruptus, Part 4
The interrupt driven print-screen program we’ve been playing with is just about “all used up” as a learning tool. Its... | | Sincus News | May - August 1985 |
Computus Interruptus, Part 5
Non-Maskable Interrupts You’ll need an “NMI Switch”, RAM in the DOCK bank and the ability to copy the T/S 2068... | | Sincus News | November - December 1985 |
Computus Interruptus, Part 6
Now, it’s time to fire up your T/S 2068. Type in and RUN the listing below. This must be done... | | Sincus News | March - April 1986 |
Computus Interruptus, Part 7
Now we’ll cover a couple of tricks we can do because the maskable interrupt is synchronized with the computer’s video... | | Sincus News | July - August 1986 |
Computus Interruptus, Part 8
Now we’ll return to the interrupt driven sprite program. When you type RANDOMIZE USR 64776 to start the program, the... | | Sincus News | September - October 1986 |
| Convert Your CAI Stringy Floppy to Store Variables Within the BASIC Program Just As The Cassette Does | | Timelinez | August 1984 |
| Data Transfer on the Serial Port | | Sincus News | January - February 1988 |
| Data Transfer on the Serial Port | | SLUG Newsletter | February 1988 |
Developing a Memory Map Consensus
Nick Lambert of Quicksilva proposed that suppliers for the Sinclair computers reach a consensus on some kind of memory map... | | SYNC | May/June 1982 |
| Disk Drive Control & Interfacing | | LISTing Newsletter | December 1985 |
| Disk Drive Control and Interfacing, Part 2 | | LISTing Newsletter | January 1986 |
| Disk Drive Control and Interfacing, Part 3 | | LISTing Newsletter | February 1986 |
Does Anybody Know What Time It Is?
Analysis of execution times of various functions. | | Sinclair Timex User Group Newsletter | July 1983 |
Dueling Devices
Problems related to incomplete I/O address decoding. | | Syntax | August 1983 |
| EPROM Concepts | | LISTing Newsletter | February 1991 |
| Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip | | Sincus News | November - December 1988 |
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip (SCL)
Attempts to reverse engineer the ULA via disassembly of ROM. | | Sincus News | November/December 1988 |
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip (SCL), Part 2
More exploration, including some circuit sketches. | | Sincus News | January/February 1989 |
| Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip, Part 2 | | Sincus News | January - February 1989 |
| Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip, Part 3 | | Sincus News | March - April 1989 |
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip, Part 3, Conclusion
Final installment continues with drawing of internal data latch and internal data bus. | | Sincus News | March/April 1989 |
Extra Memory Programming
Most of us can visualize the computer's "regular" memory. We know that the ROM part of memory has "fixed" machine... | | Update Magazine | January 1988 |
| Extra RAM | | LISTing Newsletter | April 1985 |
| Free Z80 and 68008 Technical Manuals | | Nite-Times News | March 1987 |
From Other Basics – VAL and LEN
ZX80 Basic substitutions for LEN and VAL functions. | | Syntax | September 1981 |
| Hex-Dec Conversion | | LISTing Newsletter | November 1984 |
| Hints & Tips | | LISTing Newsletter | October 1984 |
History’s Greatest TS2068 POKEs and Extras
Collection of POKEs from various newsletters. | | Update Magazine | January 1993 |
Hog Heaven – ROM Entry Points
Complete list of global subroutine calls for the 4K ROM’s eigh software modules. | | Syntax | April 1981 |
| How ROMs and EPROMs Compare | | LISTing Newsletter | October 1984 |
| How to Change RAMTOP, Part 1 | | The Plotter | March 1984 |
| IEEE-488 For Sinclair Users | | ISTUG Newsletter | July - August 1991 |
| In and Out of Caps Mode From Within a Program | | Timelinez | August 1984 |
| Input Cursors (for the TS 2068) | | The Plotter | May 1993 |
Inside Your Computer
Reprint of material from Zilog’s Z-80 Z-80A CPU Technical Manual. | | SQ Syntax Quarterly | Summer 1983 |
Intro to Machine Language
Start of series on machine language programming for beginners. | | Syntax | May 1981 |
| Journey to the centre of the ROM | | LISTing Newsletter | June 1992 |
| Joystick Applications | | QuarTerS | Winter 1987 |
| Joystick Connectors | | LISTing Newsletter | Sample Issue |
| Joystick Interfaces | | ISTUG Newsletter | February 1988 |
| Key Card for TS-2068 | | LISTing Newsletter | October 1990 |
| Key Modifications for 2068 Users | | SUM | January 1986 |
Keyboard Scanning
Tutorial on reading the TS1000/TS2068 keyboard directly. | | Syntax | February 1984 |
| Larken ZX-81 Disk Interface | | VISTA Newsletter | |
| Layout Guide TS1500 | | The RAMTOP | December 1985 |
| Lessons Learned on the use of Joystick Ports for I/O | | CATS Newsletter | April 1985 |
| Lessons Learned on the Use of Joystick Ports for I/O | | LISTing Newsletter | July 1985 |
| Little Goodies for the 2068, Edition 3 | | LISTing Newsletter | September 1985 |
| Little Goodies for the 2068, Edition 3 | | The RAMTOP | August 1985 |
| Little Goodies for the TS 2068, Edition 3 | | CATS Newsletter | January 1986 |
Logic Families
This article is a collection of data from various data books and specification sheets and is intended to provide a... | | T-S Horizons | November 1984 |
| Logical Operators | | ZX-Appeal | Summer 1988 |
| M/C Bits | | CATS Newsletter | March 1986 |
Machine Code Topics: 2068 BASIC ROM Calls
This is the first of an occasional and indefinite series on machine-code programming for the 2068. I do not intend... | | SyncWare News | Sept-Oct 1984 |
Math Function Execution Time
User-tested timing of math functions. | | Syntax | September 1982 |
| MC68000 CPU (Continued) | | Capital District Timex-Sinclair Computer Club newsletter | September 1990 |
MC68000 CPU Machine Code (cont)
Logical operations. | | Capital District Timex-Sinclair Computer Club newsletter | April 1990 |
| MC68000 CPU Machine Code Continued | | Capital District Timex-Sinclair Computer Club newsletter | August 1990 |
| MC68000 Machine Code (Continued) | | Capital District Timex-Sinclair Computer Club newsletter | June 1990 |
| Member’s Hints and Tips | | LISTing Newsletter | September 1989 |
| Miscellaneous Magnetic Tape Tidbits | | LISTing Newsletter | October 1985 |
More About … the Mystery of the Missing 253
Part 2 of a series of articles about the extended bank switching feature of the TS2068. | | Time Designs Magazine | September/October 1986 |
| More on Attributes | | The Plotter | February 1987 |
| More on Magnetic Tape Cassettes | | LISTing Newsletter | September 1985 |
| More Pokes | | ZX-Appeal | December 1987 |
| More Timex Sinclair | | LISTing Newsletter | September 1989 |
| Motorola 68060 Microprocessor | | The RAMTOP | Spring 1994 |
Multiple Program
Load several programs in the 2068 simultaneously. | | LISTing Newsletter | March 1986 |
| Navigating Through the Display File Jungle | | CATS Newsletter | Aug 1986 |
Navigating Through the Display File Jungle
Those who’ve manipulated the nice orderly display file on the ZX-81/TS-1000 have been somewhat perplexed by the T/S 2068. Yes,... | | Sincus News | May - June 1986 |
New 8K ROM Features
Updated list of the redesigned 8K ROM features not available on the 4K ROM and a brief explanation of their... | | Syntax | May 1981 |
New 8K ROM Potpourri
Sinclair’s first 8K ROM had a few bugs; list of changes to the 8K ROM map. | | Syntax | November 1981 |
Note on copyright; REM skips next line
REM statements with copyright notices do constitute legal protection; a blank REM causes the interpreter to skip next line. | | Syntax | March 1981 |
Numbers Held Inexactly on the ZX81
First in a series of articles on numerical errors in the 8K ROM. | | Syntax | March 1982 |
| Obscure Commands | | ZXir QLive Alive! | Winter 2002 |
| Oi! Maude Someone’s Gone and Nicked the Tips Again! | | ISTUG Newsletter | May - June 1992 |
| Oi! Maude Someone’s Gone and Nicked the Tips Again! | | LISTing Newsletter | January 1993 |
| Oi! Maude Someone’s Gone and Nicked the Tips! | | ISTUG Newsletter | March - April 1992 |
| Oliger Disk Drive Interface Owners | | ISTUG Newsletter | October - November 1987 |
| Oliger Disk Interface With JLO SAFE Specifications | | ISTUG Newsletter | November - December 1989 |
| On Loading Waveforms and Levels | | LISTing Newsletter | August 1985 |
Operation Codes of the 8080, 8085, and Z80 Processors
Conversion tables across the three processors. Reprint of article from March 1980 Byte magazine. | | SQ Syntax Quarterly | Spring 1983 |
| OS-64 Bug | | Timex Sinclair Users Group Mile High Chapter Newsletter | November-December 1987 |
| Parts Substitution List for ZX-81 & T/S-1000 | | VISTA Newsletter | |
| PEEKing EXROM | | CATS Newsletter | November 1985 |
| Peeks and Pokes for the TS1000 | | ZX-Appeal | November 1986 |
Perceptions
The ZX81 Parser (Part 2). In the last issue I began a discussion of the ZX81’s parser which is a... | | SYNC | July/August 1982 |
Perceptions
This article is the third in a series discussing the ZX81 Parser. Since the first two articles may have been... | | SYNC | September/October 1982 |
| Picture Popper | | CATS Newsletter | December 1985 |
| Pin connections of the ZX81 expansion port | | ZX-Appeal | November - December 1988 |
| Playing With Electricity | | ZX-Appeal | February - March 1988 |
| Playing With Electricity | | ZX-Appeal | Summer 1990 |
| Playing With Electricity: Channels and Jobs | | ZX-Appeal | June 1988 |
| Playing With Electricity: Memory Map | | ZX-Appeal | December 1987 |
| POKEs, Etc for 2068 | | The Plotter | March 1993 |
| POKEs, Etc for 2068 | | The Plotter | April 1993 |
| Poking Around | | ZX-Appeal | February - March 1988 |
| Pot Pourri | | LISTing Newsletter | November 1985 |
| Producing Flashy Listings | | ZXir QLive Alive! | Spring 2001 |
| Programmer’s Corner | | LISTing Newsletter | April 1985 |
| Programming Tip For October | | LISTing Newsletter | November 1989 |
| Programming Tips | | LISTing Newsletter | October 1992 |
| Programming Tips | | T. S. S. Newsnotes | October 1, 1984 |
| Programming Tips | | Nite-Times News | July - August 1993 |
| Programming Tips for the 2068 | | ZX-Appeal | Summer 1990 |
| Programming Tips for Timex Sinclair Computers | | T. S. S. Newsnotes | July - August 1985 |
| Programming Tips on the 2068 | | ZX-Appeal | March - April 1989 |
| QL Circuit Diagram | | LISTing Newsletter | March 1994 |
| QL Corner: Repair Tips | | LISTing Newsletter | April 1993 |
| QL Keyboard Connections | | Update Magazine | January 1993 |
| QL Keyboard Matrix Chart | | LISTing Newsletter | October 1990 |
| QL Pokes | | SMUG Bytes | January 1989 |
| QL Printouts | | CATS Newsletter | June 1987 |
| QL Serial Cable Printouts | | LISTing Newsletter | May 1991 |
| QL Sync Signals | | ISTUG Newsletter | September - October 1989 |
| QL Tip | | The Plotter | August 1988 |
| QL Tip | | Nite-Times News | September 1987 |
Random Pokes
If you don’t want the “side-effect” of changing the random number seed in USR calls, try: IF USR address THEN. | | Sinclair Timex User Group Newsletter | June 1983 |
Ray Byler’s 2068 ROM
Brief description of Ray Byler’s ROM dump/comparison. The original work was done by Ray Byler on his Kaypro computer using... | | Sincus News | May/June 1989 |
| Reading the Joysticks | | CATS Newsletter | January - February 1985 |
| Reference Sheet: Z80 Op-code and explanations | | LISTing Newsletter | October 1986 |
| Resistor Guide | | LISTing Newsletter | October 1988 |
| ROM Atlas, Part II | | LISTing Newsletter | February 1985 |
| ROM Disassembly | | Sincus News | November - December 1986 |
| ROM Disassembly | | Sincus News | January - February 1987 |
ROM List Delay
4K ROM assembly listing has been delayed for a couple of weeks. | | Syntax | September 1981 |
| RS-232 Pin Assignments | | ISTUG Newsletter | November - December 1989 |
| Save Memory: Use Buried Color Codes Instead of Color Commands | | The Plotter | January 1987 |
| Saving Memory | | ZX-Appeal | October - November 1987 |
| Secrets of the QL memory | | LISTing Newsletter | June 1994 |
Setting up the 2068
Next time you sit down to program on your 2068, try this upon powering up: CLEAR 65535: POKE 23561,10: POKE... | | SUM | |
| Sinclair ZX 16K RAM Pack | | VISTA Newsletter | |
Sinclair ZX 16K RAM Pack Issue 3-SRC104
Schematic. | | SQ Syntax Quarterly | Summer 1983 |
Sinclair ZX-81
Several letters in response to request for ZX-81 schematic. Letters include details about user’s experiences. Schematics of ZX80, ZX81 and... | | The Computer Journal | |
| Sinclair ZX81 Schematic | | ISTUG Newsletter | January - February 1991 |
| Some Key Points About the TS1000 Keyboard | | Sincus News | April 1984 |
| Soviet Block Crumbles: Spectrum Secrets Uncovered | | ISTUG Newsletter | May - June 1992 |
| Soviet Block Crumbles: Spectrum Secrets Uncovered | | LISTing Newsletter | January 1993 |
| Spectrum Calls and Pokes | | The RAMTOP | December 1985 |
| Spectrum Logic Circuit | | LISTing Newsletter | October 1986 |
| Spectrum ROM Bug | | LISTing Newsletter | March - April 1987 |
| Spectrum ROM Calls | | T. S. S. Newsnotes | November 15, 1984 |
| Spectrum ROM Entry Points Indexed Alphabetically | | Sincus News | July - August 1989 |
| Spectrum ROM Entry Points Indexed By Address | | Sincus News | November - December 1989 |
| Spectrum to 2068? | | CATS Newsletter | March 1985 |
Spectrum vs TS 2068
Comparison of the two system busses so enterprising users could build their own twister board. | | T. S. S. Newsnotes | |
| SQ Notes | | SLUG Newsletter | April 1988 |
| SQ Notes: Biorhythms | | SMUG Bytes | February 1988 |
| SQ Notes: Functions | | SMUG Bytes | September 1988 |
| SQ Notes: INPUT | | SMUG Bytes | December 1988 |
| SQ Notes: Math Functions | | SMUG Bytes | October 1988 |
| Stop Me If You’ve Heard This Before | | Sinclair Timex User Group Newsletter | January - February 1989 |
| Streaming Along | | CATS Newsletter | July 1984 |
| Streams and Channels | | LISTing Newsletter | October 1986 |
String INPUT Hints
There another use of the keyword "LINE" beside starting a program at that line when saving a program. If the... | | The RAMTOP | November 1985 |
System Variables
Here is a program which you can eerge with one you have written and which will print out a list... | | Sincus News | September - October 1986 |
System Variables and Number Storage
Appendix D of the TS-2068 user manual gives four pages of “System Variables”, which most users klnda ignore, These variables... | | Update Magazine | April 1988 |
| T/S 1000 Reference | | CATS Newsletter | June 1985 |
T/S 2000 Tips
There have been a number of tips for the 2000 that have shown up at news letter meetings and in... | | CATS Newsletter | April 1984 |
T/S 2068 Color Monitor Difficulties
Some hams have difficulty using some color monitors with the T/S 2068. There are very good reasons for these difficulties.... | | LISTing Newsletter | September 1994 |
| Tape Loading: First, Last, and Always | | CATS Newsletter | April 1984 |
Tape Records
Here is all you wanted to know about saving to tape but didn’t know where to look. Except for minor... | | LISTing Newsletter | March 1986 |
| Technical Comments Relating to the Sinclair ZX81 and the TS1000 Computers and External 16K RAMs | | Sincus News | January 1985 |
| That Zero Line Again | | LISTing Newsletter | September 1989 |
The Anatomy of a Program Line
Program listings on the ZX/TS computers are available on command. With either LIST or LLIST, the program in the machine... | | SYNC | March/April 1984 |
| The Backplane Map: Spectrum vs 2068 | | CATS Newsletter | January - February 1985 |
The Continuing Saga of 64 Columns
Analysis of Carole Corcoran’s code from the technical manual. | | Triangle Sinclair Users Group | May, June, July 1984 |
The Function Dispatcher
Introduction to the function dispatcher, comparison to dispatcher in MS DOS. | | Sinc-Link | September/October 1986 |
The Keyboard Scanning Ports of the TS-2068
Some time ago when first attempting to translate a “SPECTRUM” program for operation in the TS-2068, I was exposed to... | | The Data Expansion | Sept 1987 |
| The Logic Operator, NOT | | LISTing Newsletter | January 1991 |
The Mystery of the Missing 253
When Timex released its Technical Manual for the TS2068, we learned how to add memory to and switch between its... | | Time Designs Magazine | July/August 1986 |
| The Mystery of the Missing 253, Part Four | | Time Designs Magazine | January/February 1987 |
| The Mystery of the Missing 253, Part Three | | Time Designs Magazine | November/December 1986 |
The Mystery of the Missing 253: Conclusion
Part 5 of series of articles about bank switching as originally designed in the TS 2068. | | Time Designs Magazine | March/April 1987 |
| The Timex/Sinclair User’s Encyclopedia | | The Plotter | |
The ZX80 Keyboard
Technical description of the keyboard, schematic of the associated circuitry and machine language code for accessing the keyboard. | | SYNC | May/June 1981 |
| The ZX80 Keyboard | | LISTing Newsletter | July - August 1994 |
| Timex Logic, Part 1 | | LISTing Newsletter | January 1991 |
| Timex Logic, Part 1 | | Sincus News | May - June 1990 |
| Timex Logic, Part 1 | | LISTing Newsletter | Summer 1990 |
| Timex Logic, Part 2 | | LISTing Newsletter | September 1990 |
| Timex Logic, Part 2 | | LISTing Newsletter | January 1991 |
| Timex Logic, Part 3 | | LISTing Newsletter | January 1991 |
| Timex Logic, Part 3 | | LISTing Newsletter | December 1990 |
| Timex Logic: The Logic Operator NOT | | Sinc-Link | July/August 1991 |
Timex Releases 2068 Manual
Just at press time, Timex began to deliver copies of its comprehensive technical manual for the 2068 computers. Every owner... | | Syntax | May 1984 |
| Timex Sinclair – ZX Spectrum ROM Routine Look-Up Table | | ZXir QLive Alive! | Winter 2000 |
Timex Tech Manuals Shipped
Timex shipped its initial stock of photocopied 2068 Tech Manuals and has orders for its scheduled print run. | | Syntax | August 1984 |
| Timex Technical Data: Connector Signal Layout | | Update Magazine | January 1988 |
| Timex Technical Data: TS-2068 Schematic | | Update Magazine | January 1988 |
| Timex Technical Data: TS2068 PC Board Component Layout | | Update Magazine | January 1988 |
| Timex Tipbits | | ISTUG Newsletter | November 1988 |
| Timex/Sinclair Bus Connections and Equivalents | | ISTUG Newsletter | March - April 1992 |
| Timex/Sinclair Timing | | LISTing Newsletter | April 1995 |
Tips on ZX81/TS1000 Computer Repair
Troubleshooting tips for fixing TS1000 problems. | | Update Magazine | January 1993 |
| To Open (and Close) Sinclair ZX-81 and Timex 1000 Computers | | LISTing Newsletter | December 1983 - January 1984 |
| Trace | | SLUG Newsletter | August 1987 |
| Trace Routine | | SLUG Newsletter | July 1987 |
| Trace: Find Strings | | The Plotter | February 1988 |
| TS 1000 Notes | | ZX-Appeal | Summer 1987 |
| TS 1000 Schematic Diagram | | VISTA Newsletter | |
| TS 1500 Innovations | | Sincus News | February 1984 |
| TS 2020 Schematic | | LISTing Newsletter | April 1985 |
| TS 2020 Schematic | | LISTing Newsletter | May 1994 |
| TS 2040 Printer Schematic | | VISTA Newsletter | |
| TS 2040 Printer Schematic | | LISTing Newsletter | July - September 1986 |
| TS 2040 Printer Schematic | | LISTing Newsletter | May 1994 |
| TS 2068 Bank Switching, Part 2 | | LISTing Newsletter | April 1986 |
| TS 2068 HOME ROM Bypass | | ISTUG Newsletter | November 1988 |
| TS 2068 POKEs | | LISTing Newsletter | October 1984 |
| TS 2068 Programming Tip | | Sinc-Link | January/February 1993 |
| TS 2068 ROM Disassembly | | Sincus News | March - April 1987 |
| TS 2068 Schematic | | LISTing Newsletter | May 1994 |
| TS 2068 Schematic | | LISTing Newsletter | December 1990 |
TS 2068 Standard Memory Configuration
Memory map diagrams from the technical manual. | | Update Magazine | October 1987 |
| TS 2068, Spectrum, ZX-81 Edge Connector signal allocation | | LISTing Newsletter | October 1984 |
| TS-1000 Notes and Tips | | LISTing Newsletter | November 1992 |
| TS-2068 Suppliers | | Update Magazine | January 1988 |
| TS1000(ZX81)/Spectrum/TS2068 Edge Connector Pinouts | | ZX-Appeal | June 1987 |
| TS1000/ZX81 Schematic | | LISTing Newsletter | April 1994 |
| TS1500 and 16K RAM Pack | | Sincus News | August 1984 |
| TS1500 Schematic | | LISTing Newsletter | April 1994 |
| TS2000 System Schematic | | SUM | September 1984 |
| TS2068 Back-Plane Expansion System Standard | | Timelinez | February 1990 |
TS2068 Connector Pinouts
This information, from TIMEX Technical Memo #6, is supplied by TIMEX for publication by SYNTAX. | | Syntax | January 1984 |
| TS2068 Home RAM Map | | ISTUG Newsletter | September - October 1993 |
| TS2068 HOME ROM Bypass | | LISTing Newsletter | January 1989 |
| TS2068 Ins and Outs | | Timelinez | September 1987 |
| TS2068 Ins and Outs | | CATS Newsletter | August 1987 |
| TS2068 Joystick Operation | | LISTing Newsletter | September 1992 |
| TS2068 Keyboard Scanning | | LISTing Newsletter | October 1992 |
| TS2068 Keyboard Scanning | | LISTing Newsletter | April 1985 |
TS2068 Personal Computer Technical Reference Manual
If you need to know about how the CPU, ROM, RAM, sound chip, joysticks, keyboard, display hardware, cassette ports, or... | | Syntax | June 1984 |
TS2068 Port Assignments
Timex provided SYNTAX with the following chart, referred to on page 214 of your 2068 manual. This chart is what... | | Syntax | January 1984 |
TS2068 Power Supply Information from QZX
Overview of the AC adaptor and internal voltage regulation. | | Update Magazine | January 1993 |
| TS2068 ROM Disassembly | | Sincus News | November - December 1987 |
| TS2068 ROM Disassembly | | Sincus News | May - June 1987 |
| TS2068 ROM Disassembly | | Sincus News | July - August 1987 |
| TS2068 ROM Entry Points Indexed Alphabetically | | Sincus News | September - October 1989 |
| TS2068 ROM Entry Points Indexed By Address | | Sincus News | January - February 1990 |
| TS2068 Tips | | SMUG Bytes | September 1989 |
| TS2068 Tips | | QuarTerS | Summer 1985 |
| TS2068/TC2068 SCLD Pinout | | CATS Newsletter | Sep 1986 |
Two Tips: Colors, VAL$
Using the second display file for color attributes and a string version of VAL(). | | The RAMTOP | December 1985 |
| Understanding Baud Rates | | Nite-Times News | April 1987 |
Understanding Floating-point Arithmetic, Part 2
Describes the workings on the ‘third language’ of the 8K ROM – the CALCULATOR LANGUAGE – that is used to... | | SYNC | March/April 1982 |
Understanding Floating-point Arithmetic, Part 3
In this article on floating-point arithmetic, we will consider the algorithms that are used in the 8K ROM program to... | | SYNC | July/August 1982 |
Understanding Floating-point Arithmetic: Part 1
The aim of this article is to give the reader some insight into the complex world of floating-point arithmetic. Since... | | SYNC | January/February 1982 |
| Updates | | Sincus News | May - August 1985 |
Useful ROM Routines in the TS 2068
List of routines programmers may find useful. | | | September/October 1986 |
| Using the Larken Sequential/Random Filing System to Produce a TS2068 ROM Disassembly | | Update Magazine | October 1991 |
| Wafadrive Schematic | | ISTUG Newsletter | February 1988 |
| Westridge 2050 Modem Operations: A Reference Guide | | Timelinez | August 1984 |
| X-Modem | | Sincus News | November - December 1986 |
| Z80 Chip Organization and 64K Memory Diagram | | CATS Newsletter | July 1985 |
| Z80 Command and OP Code Reference | | Sinc-Link | |
ZX Interfaces Explained
The ins and outs of Sinclair computers. Details are given for the Spectrum as well as the ZX81. | | Electronics Today International | February 1983 |
ZX Memory Map
Memory map as designed, where current peripherals fit in the map and suggestions about standardization. | | SQ Syntax Quarterly | Winter 1982 |
| ZX Spectrum Tape File Format | | LISTing Newsletter | May 1997 |
| ZX-80 Schematic | | LISTing Newsletter | April 1994 |
| ZX-81 POKEs & Calls | | ZXir QLive Alive! | Spring 1994 |
| ZX-81 Pokes & Calls | | LISTing Newsletter | December 1990 |
| ZX/81 Schematic | | CATS Newsletter | December 1985 |
| ZX/81/TS 1000 Technical-ities | | LISTing Newsletter | November 1984 |
ZX/TS Power Supplies
Table of details about and schematics of the ZX80, ZX81 and TS1000 power supplies. | | SQ Syntax Quarterly | Winter 1982 |
ZX/TS Subset of 2068 Pins
Aligned with the slot, you will find the pins correspond exactly to the ZX/TS pinout with three exceptions. RAM CS,... | | Syntax | December 1983 |
| ZX80 and MicroAce Bus Pinout | | Syntax | December 1980 |
| ZX81 Address Decoder | | ZX-Appeal | September 1988 |
| ZX81 Graphics Template | | LISTing Newsletter | October 1993 |
ZX81 I/O Map
Details about using IN and OUT on the ZX81. | | ZX-Appeal | October 1985 |
ZX81 Logic Signals
Reference signal levels for troubleshooting. | | Syntax | October 1982 |
| ZX81 Schematic | | SQ Syntax Quarterly | Winter 1982 |
| ZX81 Schematic | | LISTing Newsletter | November 1985 |
ZX81/TS1000 Circuit board
Photos of top and bottom of circuit board showing component placement. | | SQ Syntax Quarterly | Winter 1982 |
| ZX81/TS1000 Tips | | Sincus News | July - August 1990 |
| ZX81/TS1000 Tips | | Sincus News | November - December 1989 |
| ZX81/TS1000 Tips | | Sincus News | July - August 1989 |
| ZX81/TS1000 Tips | | Timelinez | August 1985 |
| ZX81/TS1000 Tips | | Sincus News | November - December 1988 |
| ZX81/TS1000 Tips | | Sincus News | January - February 1990 |
| ZX81/TS1000 Tips | | Sincus News | September - October 1988 |
| ZX81/TS1000 Tips | | Sincus News | January - February 1988 |
| ZX81/TS1000 Tips | | Sincus News | March - April 1988 |
| ZX81/TS1000 Tips | | Sincus News | July - August 1988 |
| ZX81/TS1000 Tips | | Sincus News | May - June 1988 |
