Don Lamen

Articles (30)

TitleAuthor(s)PublicationDate
Exploring the Timex/Sinclair 1000’s Sinclair Logic ChipSincus NewsNovember - December 1988
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip (SCL)
Attempts to reverse engineer the ULA via disassembly of ROM.
Sincus NewsNovember/December 1988
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip (SCL), Part 2
More exploration, including some circuit sketches.
Sincus NewsJanuary/February 1989
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip, Part 2Sincus NewsJanuary - February 1989
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip, Part 3Sincus NewsMarch - 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 NewsMarch/April 1989
Exploring the TS1000 Sinclair Logic Chip (SCL) IX
This month concludes the series with a discussion of some of the parameters used by the SCL and a few...
Don LamenQZXJuly 1990
Exploring the TS1000 Sinclair Logic Chip (SCL) VI
This article is a continuation of the series which began in the October 1989 issue of QZX. The purpose is...
Don LamenQZXApril 1990
Exploring the TS1000 Sinclair Logic Chip (SCL) VIII
This article is a continuation of the series which began in the October 1989 issue of QZX. The purpose is...
Don LamenQZXJune 1990
SortSincus NewsJanuary - February 1987
T/S 1000 Printer TipVISTA Newsletter
TS-2068 Data Input – a utility for: data base generation, keyboard reading, character concatenation, screen display, full editing
This is an audacious attack upon the most famous weaknesses of the TS-2068, slow data input and poor screen editing....
Update MagazineApril 1989
TS-2068 Data Input (re-visited) or “A new hiding place for code”
Concatm.C1 relocated to an area other than print buffer.
Update MagazineJuly 1989
ZX81/TS 1000 Tips
Here is a little function, which may be placed at the beginning or within a machine code program, to stop...
Don LamenThe Data ExpansionMarch 1988
ZX81/TS1000 Tips
Machine code routine that uses a floating point number as an address.
Sincus NewsNovember/December 1988
ZX81/TS1000 TipsSincus NewsMarch - April 1988
ZX81/TS1000 TipsSincus NewsJanuary - February 1988
ZX81/TS1000 TipsSincus NewsSeptember - October 1988
ZX81/TS1000 TipsSincus NewsNovember - December 1988
ZX81/TS1000 TipsSincus NewsJuly - August 1989
ZX81/TS1000 TipsSincus NewsNovember - December 1989
ZX81/TS1000 TipsSincus NewsJanuary - February 1990
ZX81/TS1000 TipsSincus NewsJuly - August 1990
ZX81/TS1000 TipsTimelinezAugust 1985
ZX81/TS1000 TipsSincus NewsJuly - August 1988
ZX81/TS1000 Tips
To determine the address of ‘UPLOAD’, PEEK 16511 + 256 x PEEK 16512 + 4 using a direct command. Then...
Don LamenThe Data ExpansionApril 1988
ZX81/TS1000 TipsSincus NewsMay - June 1988
ZX81/TS1000 Tips
Use a pocket calculator to convert decimal address to hexadecimal and back; program for doing the same on ZX81/TS1000.
Sincus NewsSeptember/October 1988
ZX81/TS1000 Tips
Short machine code routines to save paper when copying a screen, fine the address of a line number.
Sincus NewsJuly/August 1988
ZX81/TS1000 TipsDon LamenThe Data ExpansionJuly 1988

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