Don Lamen

Location: New York

Articles (30)

TitleAuthor(s)PublicationDate
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip
Toni Baker’s book “Mastering Machine Code On Your ZX/81” was a big help in disassembling the ROM code and printing...
Sincus 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 2
Being unable to draw the exact circuits; because of the lack of any technical data on the Ferranti Mask Programmable...
Sincus NewsJanuary - February 1989
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip, Part 3
Note: In Part I, Nov/Dec 88, under the section titled “The SCL Chip”, there is a list of circuits and/or...
Sincus 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
Sort
Here is Don Lamen’s printout from his MC program HASP showing the code for “Sort”, and also the Basic for...
Sincus NewsJanuary - February 1987
T/S 1000 Printer TipVISTA Newsletter
TS-2068 Data Input
This is an audacious attack upon the most famous weaknesses of the TS-2068, slow data input and poor screen editing....
Bill Jones
Don Lamen
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 Tips
3. Here is a little function, which may be placed at the beginning or within a machine code program, to...
Sincus NewsMarch - April 1988
ZX81/TS1000 Tips
A method of loading and stopping an autorun program, donated to the readers of SYNC magazine several years ago by...
Sincus NewsJanuary - February 1988
ZX81/TS1000 Tips
9. Using a pocket calculator to convert decimal addresses (generally 5 numbers) to hexadecimal addresses(four digits): [ An example will...
Sincus NewsSeptember - October 1988
ZX81/TS1000 Tips
12. Here is a set of Machine code routines that uses a Floating Point Number as an address. It is...
Sincus NewsNovember - December 1988
ZX81/TS1000 Tips
15. Here is a short program to handle OCTAL INPUTS and OCTAL DUMPS.
Sincus NewsJuly - August 1989
ZX81/TS1000 Tips
16. Here is another OCTAL Input and List program. This one is based on Machine Code with BASIC support. “Why...
Sincus NewsNovember - December 1989
ZX81/TS1000 Tips
17. In the TS1000 Timex Manual there are the following mnemonic errors : a) From 00 hex. to 07 hex....
Sincus NewsJanuary - February 1990
ZX81/TS1000 Tips
Tip 19: It’s been two or three years that I have been writing these Tips. Are they still helping anyone?...
Sincus NewsJuly - August 1990
ZX81/TS1000 TipsTimelinezAugust 1985
ZX81/TS1000 Tips
7. A five byte machine code routine to save printer paper while copying screen: This routine is fully relocatable. For...
Sincus 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 Tips
5. A machine code routine that allows you to insert a BASIC line at any unused line number. If by...
Sincus 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

User Groups (1)

TitleLocationFounded
Sinclair Computer Users Society (SINCUS)
The Sinclair Computer Users Society was a non-profit organization operated by volunteers dedicated to the Sinclair and Timex Sinclair computer...
1229 Rhodes Road, Johnson City, New York 13790 1982

Blog Posts (1)

TitleDate
The History of QZX
QZX was one of the longest running Sinclair newsletter in the United States, starting in 1981 and published for more...
October 31, 2020