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The Memotech MTX Series

MTX User's Club - Germany

                                                January 2017

Hi Fellow Memotech enthusiasts,

As all MTX users know, the Memotech MTX was a great computer in its day, but it didn't get the support that it deserved and ended up being a very niche product, with very little manufacturer or commercial magazine support. Most of the support for the machine came from the various User Groups that were set up, including the ones that I know about - 3 in the UK and 1 in Germany.

It seems that a large proportion of Memotech's sales were in Germany and the German User Group appears to have been very active, with a number of technically minded members developing some neat hardware and software projects for the MTX. Whilst I have been able to put the majority of the English language User Group magazines on line, I have not been able to do this for the MTX Germany User group.

The driving force behind the German User Club magazine (MTX-Info) was Herbert zur Nedden.  Herbert still considers the magazines to be subject to his Copyright and, until today, would not allow them to be published on line.

However, thanks to input from Manfred Flume, a member of the MTX User's Club Germany back in the day, and a contributor to the MTX-Info magazine, Herbert has now posted scanned copies of the magazines on his own website - mtx-info.de. The links on the magazine issue number in the table below will open the PDF from Herbert's site.

I believe that the magazines contain some really good technical info on the MTX - at least, as far as I can tell, being a non-German speaker. If anyone who does speak/read German comes across some "hidden gems", please let me know.

regards
Dave

The German user group seems to have been very technically orientated, with quite a number of hardware projects being developed for the MTX and FDX. The MTX User's Club (Germany) was the most long lived of the MTX User groups and was active until at least mid 1992.

The MTX User Club Germany was run by Herbert zur Nedden, who also produced the MTX-Info magazine.

Peter Kretschmar has scanned copies of the MTX-Info magazines which Herbert is offering for sale at 15 Euros on his web site. The CD contains 46 issues of the magazine, along with some PD software.

Unfortunately, being unable to speak or read German, although I may be able to find something useful on the CD, I can't really justify the cost of taking a chance. If you have some grasp of German, you may like to obtain a copy of the CD from Herbert.

Someone (who shall remain nameless, you know who you are - thank you!) has sent me copies of the magazines, but for the reason given above, I am unable to make them available for download.

This page shows some boring images of the cover page from the magazines, but the magazine contents are not available for download from this page. I will try and work through the magazines, doing my best to highlight the most useful content in each issue, but, with having no German language skills, this will likely take some time, particularly as they do not convert to text very well with my OCR software, making it difficult to even run them through Google Translate.

NB : I have not done justice to the contents of the magazines, they really do contain a lot more useful tricks & tips as well as interesting technical notes.

From Issue 11, the magazine contains an index which may give you a clue as to whether there is anything of interest to you in that edition.

 

MTX-Info - MTX User's Club Germany
 

Issue / Date

Description - contents summary

Volume 1 - 1984/1985

1

(16 Pages)
First edition, setting out the club's aims

Info about USERERROR, USERINT, USRRST, USERIO, USER

BASIC Type-in, Fractals
2

(40 Pages)

December
1984?
Review of COPYD, a universal diskette copying program for CP/M
(Reprinted from c't, a German computer magazine)

Type-in programs, Biorhythms (BASIC), Character Generator (ASM)
Graphics scrolling routine for VS4 (ASM)
Routines for VRAM <-> RAM transfers (ASM)

Review of the FDX
3

(43 Pages)
DMX80 Printer Codes
Programming the 6845 (FDX Graphics Controller)
(Reprinted from c't, a German computer magazine)
Extracts from Zilog manuals for CTC and DART along with extracts from the Memotech RS232 Card manual
Type-in program, Sprite Editor (ASM)
Hardware extension - audio output speaker amplifier
Software Review : Chess

4

(61 Pages)


Using the parallel I/O port
CP/M BDOS, lots of info about FDX CP/M
Type-in program, converting between FDX and PC disks (ASM)
Type-in program, Graphics screen display/enlarge (ASM)
CP/M - extensive description of PIP
Hardware extension - using an 8255 PIA

5

(30 Pages)

The RS-232 Interface - Description and Usage
(Reprinted from another German magazine)

Programming the Z80 CTC
(Reprinted from c't, a German computer magazine)

Type-in program, Dec-Hex-Bin conversion (BASIC)
Type-in program, game, Willie-Wurm (BASIC)

6

(44 Pages)

~ 03/1985
80 Column card output to SCART
Adapting an MTX PAL Video board for TV or Monitor
SCART Information (magazine reprint)
VS4 Graphics under CP/M (Pascal)
Computer connection with PIP.COM
8080 & Z80 Assembly Language Comparison
Type-in program, Biorythms ( BASIC)

7

(69 Pages)

Programming the 8255 PIO
(Reprinted from c't, a German computer magazine)

CP/M and the hardware (Reprinted from c't)
NewWord Patches
Type-in program, Music Editor ( BASIC)
Turbo Pascal Version 3 review and screen patches for FDX
The CP/M STAT command

8

(56 Pages)

NewWord Tricks & Tips
FDXB Disc Save Disassembly
Type-in program, VS4 Hard Copy (ASM)
VS Graphics with Turbo Pascal Version 3

9

(62 Pages)

30/09/1985
Type-in program, Sprite Control (BASIC & ASM)
Hardware : Connecting relays to the User Port (I/O Port 7)
Type-in program, Background Printing (ASM)
Type-in program, Typewriter with formatting capabilities (BASIC)
Turbo Pascal Version 3, FDX 80 Column patching
Type-in programs, Set Printer, Mini-piano (Turbo Pascal)

10

(48 Pages)

01/11/1985
Build a basic low cost digitiser for the MTX, connected via a joystick port
Various game hacks
Hardware : FDX Floppy Disk Installation (Qume, Epson, Teac drives)
Hardware : 1.6MB Drives on FDX
FDX BASIC Jump Table and Syntax Byte listing
FDX BASIC Sorting in assembler
Various dBase II Program files
11

(80 Pages)

15/12/1985
Technical details about the "new" SDX
Build an EPROM programmer connected via the serial port
BASIC Overlays
Improved screen displays in SuperCalc - Patch with DDT
dBase II Tips
NewWord Tips
Turbo Pascal Tips

Volume 2 - 1986

12

(69 Pages)

15/03/1986

MTX User Club Disk Summary
    Club 001 CP/M-Utilities
    Club 002 Forth
    Club 003 Small-C and TURBO routines (graphics, window)
    Club 004 BIOS, TURBO routines, Patch program
Hardware : Real Time Clock, connected via User I/O Port (Port 7)
Software review : Z80ASM (Z80 Assembler for CP/M)

13

(56 Pages)

10/05/1986

Hardware : FDX to ECB (Europe Card Bus)
Hardware : MTX Tuning (4Mhz to 4.43MHz)
Hardware : Mouse, connected via User I/O Port (Port 7)
Software : DU (CP/M Disk Utility) Usage
Software : SuperCalc patches
Turbo Pascal : Sprites
Assembler Tips : Square roots, Z80 Index Registers (IX, IY)

14

(57 Pages)

15/06/1986

MTX User Club Disk Summary
  Club 007 Improved Small-C, complements inline assembler of Club 005,
                 Sprites Under TURBO, Text Formatter
  Club 008 Improved Z8O FIG-Forth routines for Memotech MTX / FDX
  Club 009 NewWord Printer Driver
Hardware : ECB (Europe Card Bus) Connection card for MTX
Software : FDXB Floating Point Format
Type-in program, MTX & FDX BASIC Load/Save/Verify (ASM)

15

(50 Pages)

01/08/1986

Type-in, Improved VAL and Boolean expressions for FDX BASIC (ASM)
Type-in, Hardcopy for Seikosha printers (ASM)
CP/M : DDT Usage
Hardware : SDX BDOS Err Bad Sector fix
Hardware : 2 Channel A/D Converter for User I/O Port (Port 7)
Hardware : Audio amplifier for MTX audio output to a speaker
Hardware : RS2332 Baud Rate Generator
Programming the Z80 SIO
Software : SuperCalc course - Part 1

16

(43 Pages)

20/09/1986

CP/M : SUB Usage
CPU : Z80 Interrupts
Hardware : A/D Converter with multiplexer for User I/O Port (Port 7)
Hardware : ECB Bus
Type-in, Fractals (BASIC)
Type-in, Light Raiders (ASM)
Software : SuperCalc course - Part 2

17

(86 Pages)

23/11/1986

Software : RAM4 (RAM Disk?)
Software : TEXTCOM (CP/M Text Compiler)
BASIC : System Variables
BASIC : Video Access
MTX Series Video Memory Map (In English)
BASIC : Tokens an Jump Tables
Hardware : Other screen formats with 80-column card
Hardware : Automated Cassette Interface
Hardware : MTX ROM Board
Software : SuperCalc course - Part 3

Volume 3 - 1987

18

(49 Pages)

10/02/1987
BASIC : Keyboard de-bouncing in FDX BASIC
Hardware : 5MHz Crystal with BASIC Tips & Circuit Diagram
Hardware : PALs on the MTX mainboard and RS232 board
Hardware : Faster MTX/FDX with 1 wait state
Software : SuperCalc course - Part 4
19

(66 Pages)

01/01/1987
Turbo Pascal 3 : Installation
Turbo Pascal 3 : Interrupts
Assembler Course - Part 1
NewWord : Address Data (Mail merge?)
NewWord : New Printer Overlay (From Club 009)
20

(48 Pages)

20/05/1987

Software : RAM 4.2 Patches
Software : Turbo Pascal & NewWord Patches
Assembler Course - Part 2
Software : SuperCalc course - Part 5
21

(39 Pages)

14/07/1987

Assembler Course - Part 3
Type-in : Calculator Program ("C")
Hardware : MTX Memory Card PROM Replacement
Hardware : 8MHz MTX
22

(40 Pages)

01/09/1987
Hardware : MTX512S2 Review
SuperCalc : Amortisation Calculation
Turbo Pascal V3.0 : Patches for Turbo.OVR
Hardware : Replacing VRAM (4116) with 4164 RAM
Hardware : 8MHz MTX
Assembler Course - Part 4
Hardware Test : Brother M-1509 Printer
23

(21 Pages)

01/11/1987
Hardware : MTX512S2
24

(43 Pages)

07/12/1987
Graphics : Setting a graphics standard for Turbo Pascal
Patches : For XDIR, DDIR, MENU
Hardware : User experience get MTX running at 8MHz
Hardware : HD64180 Card
Hardware : Low Cost D/A Converter
CP/M Cold boot from B:
Assembler : The start of a course for Z80 Assembly Language

Volume 4 - 1988

25

(77 Pages)

01/02/1988
Hardware : Another user experience get MTX running at 8MHz
Hardware : Repair / Fault-finding tips
Hardware : Interrupts at the ECB Bus
Hardware : SuperTape under CP/M
Assembler :  Assembly Language course Part II
Hardware : 80 Column Card & VS4
Hardware : 512kB RAM Upgrade
26

(50 Pages)

01/04/1988
NewWord : Character definitions for the printer
NewWord : Automation
NewWord : Custom setup
dBase II : Tips
dBase II : Errors
Hardware : Using the User I/O Port (7)
Logic : Karnaugh Maps
Assembler : Assembly Language course - Block swap/move
27

(58 Pages)

15/06/1988

Type In : Faster Disk Copy (ASM)
Type In : Biorhythms (Pascal)
Hardware : New Boot ROM for FDX, including type 03 and 09 (390k) disks
Hardware : IM2 Interrupts and DMA for the ECB Bus
Hardware : CPU Frequency Tuning
dBase II : Tips
SuperCalc : Tips
 

28

(29 Pages)

30/07/1988

 

29

(64 Pages)

20/10/1988

Replacement FDX Boot EPROM, adding support for HD Floppy Drives
Wait Generator for MTX Operation at 8MHz

Volume 5 - 1989

 

30

(53 Pages)

03/01/1989

 
 

31

(60 Pages)

08/03/1989

 
 

32

(65 Pages)

09/06/1989

 
 

33

(31 Pages)

10/08/1989

 
 

34

(40 Pages)

13/10/1989

 
 

35

(29 Pages)

04/12/1989

 

Volume 6 - 1990

 

36

(55 Pages)

15/02/1990

 
 

37

(40 Pages)

12/06/1990

 
 

38

(45 Pages)

04/08/1990

 
 

39

(32 Pages)

15/10/1990

 
 

40

(35 Pages)

25/11/1990

 

Volume 7 - 1991

 

41

(21 Pages)

28/02/1991

 
 

42

(29 Pages)

12/05/1991

 
 

43

(21 Pages)

10/07/1991

 
 

44

(23 Pages)

04/10/1991

 

Volume 8 - 1992

 

45

(45 Pages)

17/01/1992

 
 

46

(35 Pages)

02/06/1992

 

 

Technical Notes
 

Date

Description

 

Miscellaneous
Click to open PDF

Date

Description
     
     

 

 

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