ZX81 News & Resources
Bruce Taylor’s budget robotics book, Westridge 2050 modems, AERCO FD-ZX floppy disk system,
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Timex/Sinclair 1000
ZX81 News & Resources
Note about a bug in the AERCO CP2.2 ROM. Report on the John Oliger TMS9918 Video Upgrade.
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SincBits
Updates on Larken DOS (EPROM); RAMEX Amdek III disk system; Spectrum and QL accessories and improvements.
ZX81 Hardware & Software News
Notes about John Oliger’s video upgrade project, running machine code in upper memory, ZX81 disk systems from Larken and AERCO. Also includes mention of the Oliger disk system for the TS 2068 and CP/M from AERCO. Short review of Sinc-Artist and notes about James Hastings-Trew’s other code offerings.
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SyncBits
Update on Microdrives, Larken disk system, Portuguese drive system from English Micro Connection and Zebra. Beta Basic, Mega Basic, BLAST, Supercode 3, and other Spectrum programs. Peter McMullin’s WordSinc II.5 and Word Font 1.2 for the TS 1000.
More Keyboard Notes
Where to purchase surplus keyboards for conversion to the TS 1000.
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ZX81 Hardware & Software News
Updates on word processing, printing to full size printers, John Oliger video upgrade, hardware, software suppliers. Tips for programming in BASIC.
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ZX81 Hardware News
Notes about Gladstone 64K RAM pack, a 5″ monitor, Word Sinc II, Oliger ZX81 Video Upgrade.
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A Header Program for the ZX81
Program to display the names of programs saved on a tape.
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Dual Centronics Interface
Port-mapped expansion board using the Intel 8255 PIA chip. Provides two Centronics ports, one for output to a printer, the other for data input. A 32 byte PROM overrides ROM printer routines and directs the commands to driver software. Fully supports BASIC LPRINT, LLIST and COPY statements. Driver software loads above RAMTOP but can be
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DitherPaint81
Port of DITHERPAINT99 (for the TI99/4A with EXTENDED BASIC) that has been optimized for the Sinclair ZX81/Timex 1000 computers. Changes make use of the unique limitations and features that are part of the ZX81. Developed using a modern text editor, tested on the EightyOne emulator, compiled using MCODER and tested on real hardware.