LISTing Newsletter November 1985

Date: November 1985
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Articles

Title Description Computers
A Test Drive of the Zebra Floppy Disk Drive Systems Timex/Sinclair 2068
Big Keyboard 2068 A circuit diagram for a “Keyboard Interface Circuit” is printed below. The construction method is your choice. (A PC Board for the cartridge slot is a nice idea) I have not included details on re-wiring a keyboard (see March 85 Listing Pg. 18), but used the connection names used in the March issue. All the Timex/Sinclair 2068
Centronics Printer Port - AERCO Style Schematic for a parallel printer interface using the Zilog Z80-A parallel input/output chip (PIO). Timex/Sinclair 2068
Computer Interfacing Techniques in Science
I/O Ports: Centronics Port Timex/Sinclair 2068
Letters to LIST
Library Tape #4
Meeting Notes
Pot Pourri This method of using recursive DEF FN to obtain sums was discussed in a TS Survival column in COMPUTER SHOPPER. It is fast and handy in some applications. Timex/Sinclair 2068, Type-in program
Protection Schemes ON ERR….. The ON ERR… command on the TS 2068 can be used to make your programs essentially “unbreakable”. If the first line of your program, for example, is: and there is a line 9000 of this sort; any time a “break” error occurs the program will “CONTINUE” Slightly nastier, and certainly terminal, is this Timex/Sinclair 2068
Tasword/MTerm Timex/Sinclair 2068, Type-in program
Time-X-change
Try This: London Bridge Timex/Sinclair 2068, Type-in program
ZX81 Schematic
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