Lloyd Dreger

Lloyd H. Dreger, PhD, was an avid Timex/Sinclair 2068 user and educator.

Lloyd received his B.A. from the University of Wisconsin Oshkosh and a double PhD in Chemistry and Philosophy from the University of Wisconsin Madison.

He worked at Allan Bradley and CSI Specialty Coatings in Milwaukee. He umpired softball for the Milwaukee Park and Recreation Department for many years and was very active in the West Allis Village Playhouse as an actor and also served as treasurer.

Dreger passed away at the age of 84 in 2016.

Location: Wisconsin

Articles (20)

TitleAuthor(s)PublicationDate
2068 Code Bytes #2
Second installment in a series on interrupt-driven Z80 machine language programming for the Timex/Sinclair 2068. Covers a BLINK routine that...
Lloyd DregerSMUG BytesJune 1993
2068 Code Bytes #4
Fourth installment in Lloyd Dreger’s Z80 machine language series for the Timex/Sinclair 2068, presenting the general menu system used in...
Lloyd DregerSMUG BytesJuly 1993
2068 Code Bytes #5
Fifth installment of the Z80 machine language series, presenting the world-map printing routine for CONQUEST. Covers FMO (find map start...
Lloyd DregerSMUG BytesAugust - November 1993
2068 Code Bytes #6
Sixth installment of the Z80 series, providing corrections to the issue #5 map routine plus the FINDAT color-attribute routine that...
Lloyd DregerSMUG BytesAugust - November 1993
2068 Code Bytes #7
Seventh installment of the Z80 series, presenting the map-cursor and map-editor routine for CONQUEST. Covers PRCURS and PRCUR (cursor initialization...
Lloyd DregerSMUG BytesAugust - November 1993
A Commitment – What It Takes
We all know of busy people who get a lot of things done and accomplish a lot of things. They...
Lloyd DregerThe Data ExpansionJuly 1988
At Our Last Meeting
There was some qood discussion on our classes and what classes will be held. There will not be a basic...
SMUG BytesApril 1987
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...
TimelinezMay 1987
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....
TimelinezMay 1987
Commitment—What It Takes
An unsigned editorial on the planning and commitment required to write a major game for the Timex/Sinclair 2068. Discusses the...
Lloyd DregerSMUG BytesAugust - November 1993
Dr. Lloyd Dreger – T/S 2068 Expert
I have been active in the T/S community since I first joined a user group in 1986. I have subscribed...
Tim SwensonZXzineJanuary 2025
Interrupts
А discussion of interrupts was a bit too advanced a subject to cover in detail in my book ‘Introduction to...
The Data ExpansionOctober 1986
Multiple Disk Systems
Report on an experiment by Dennis Nickel and Lloyd Dreger attempting to run both an AERCO and an Oliger disk...
Dennis Nickels
Lloyd Dreger
SMUG BytesDecember 1987
Multitasking on the 2068SMUG BytesFebruary 1989
Multitasking on the 2068 (Part 2)SMUG BytesMarch 1989
PRINT or LPRINT
Each new book І have bought on the TS 2068 has taught me quite a bit about programming on the...
Nite-Times NewsMay 1987
The Limits of Computer Intelligence
First of four installments of a talk by Dr. Lloyd Dreger delivered at the 1990 Sinclair Expo. Establishes the philosophical...
Lloyd DregerSMUG BytesSeptember 1990
The Limits of Computer Intelligence II
Second installment. Presents Searle’s Chinese Room thought experiment — a human following an algorithm with Chinese symbol baskets never learns...
Lloyd DregerSMUG BytesOctober 1990
The Limits of Computer Intelligence III
Third installment. Returns to the Chinese Room to demonstrate that even adding a dictionary (without illustrations) provides no semantic breakthrough...
Lloyd DregerSMUG BytesNovember 1990
The Limits of Computer Intelligence IV
Fourth and final installment. Argues that brain simulation is impractical due to complexity theory (combinatorial explosion). Conclusion 2: simulating the...
Lloyd DregerSMUG BytesDecember 1990

Companies (1)

Books (3)

TitleAuthor(s)Date
Advanced 2068 Machine Code Volume 1
Third book in Dreger’s series on TS 2068 machine language programming. Picks up where Introduction to 2068 Machine Code left...
Lloyd Dreger1987
Introduction to 2068 Machine Code Programming
Over 200 pages of educational material, written to be used as a self-teaching course in beginning machine code. Many examples...
Lloyd Dreger1986
The Timex/Sinclair 2068 ROM Manuscript
A complete, annotated disassembly, with Spectrum cross-references.
Lloyd Dreger1986

User Groups (1)

Lloyd Dreger
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