Catch A Dragon!
Program to plot “dragon curves.” A dragon curve is a regular fractal which forms from an infinitely repeated construction process.
Timex/Sinclair 1000
Creating a Four Port Expansion Decoder
Memory-mapped IO for the 1000 computer.
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Happy Letters: A Teaching Tool for Young Children Using Sound and Graphics
This program generates a random character, either a letter or a number, and displays it on the screen, enlarged to eight lines. The Player presses the matching key on the ZX81 keyboard and is rewarded with a “Happy Face” and a song.
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Adventures in the RAM Jungle and Other Mysteries [Conclusion]
Conclusion to the series about understanding RAM allocation on the TS 1000 and 1500 computers.
Adventures in the RAM Jungle and Other Mysteries [Conclusion] Read More »
Letters
Gorilla printer offered by DAK; how to use VU-FILE and VU-CALC with 64k; bubble sort for 1000; column reviewing Adventure programs suggested; short machine code routine for sound; joystick program.
Product News
Oliger 2068 floppy disk interface available; Larken drive controller with Spectrum ROM; uncased 2050 modems; Tech Draw Jr, Spectrum Emulator cartridge, Zebra Talker from Zebra; Amdek plotter; Jack Dohany’s shareware announcement.
Dateline:Tomorrow: Naked MicroAce On the Way. Also ZX81
We hear that the MicroAce II will be announced shortly. It will have a full-stroke keyboard, possibly 16K of on-board memory, will run 8K ZX80 Basic, but will not have a case or housing. According to insiders at MicroAce, it is a much improved machine and allegedly better than the recently introduced ZX81 by Sinclair/England.
Dateline:Tomorrow: Naked MicroAce On the Way. Also ZX81 Read More »
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip (SCL), Part 2
More exploration, including some circuit sketches.
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip (SCL), Part 2 Read More »
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip (SCL)
Attempts to reverse engineer the ULA via disassembly of ROM.
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip (SCL) Read More »
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.
Exploring the Timex/Sinclair 1000’s Sinclair Logic Chip, Part 3, Conclusion Read More »