Timex Sinclair Users Group Mile High Chapter Sep 1987
Date: Sep 1987
See all issues of Timex Sinclair Users Group Mile High Chapter Newsletter
Articles
| Title | Description | Computers |
|---|---|---|
| Analog-to-Digital Sampling Routine for the TS1000 | An 8-byte Z80 machine code routine stored in a REM line for use with the ZEBRA Analog-to-Digital converter, suitable for low-speed sampling (once every several seconds). The disassembled code reads a specified port, delays for A-to-D conversion, and returns the result in the accumulator. A sample 10-reading BASIC wrapper is included. | Timex/Sinclair 1000, Type-in program |
| Editor's Notes — September 1987 | Frank Holland announces that this issue is devoted entirely to the ZX81/TS1000 for the benefit of new members. Provides BBS access instructions for the Mile Hi TSUG sub-board on The King’s Market BBS (1-303-665-6091, accessible via PC-PURSUIT). Notes a growing collection of TS club newsletters covering homebrew hardware and modifications. | Timex/Sinclair 1000 |
| Helpful Hints for the TS1000 | A collection of practical tips for TS1000 users: Hint #2 recommends HOT-Z as an assembler/disassembler/debugger for machine code work; Hint #3 recommends PRO/FILE for database needs (available from Tom Woods); Hint #4 advises drilling ventilation holes in the case to address voltage regulator overheating. Also notes keyboard label sheets from RMG Enterprises and the new | Timex/Sinclair 1000 |
| REM Generator | Machine code utility that generates a REM statement of any length at any line number, allowing arbitrary amounts of machine code to be stored in a BASIC program’s REM line without tediously typing out each character. The routine is stored in a 63-byte REM line; after POKEing 63 values, a BASIC loader replaces itself with | Timex/Sinclair 1000, Type-in program |
| SCLD Character Select Switch Schematic | Technical schematic (DRW No. SRC 0549) showing the wiring for a character select switch for the Sinclair ZX81 SCLD chip, allowing selection between character sets. The diagram includes pin assignments for the US connector and the SCLD chip, with an alternative IC noted. The listing was created 9/17/87. | Timex/Sinclair 1000 |
| TS1000/TS1500 Memory Status Utility | Short BASIC subroutine (GOSUB 9200) that reports five memory figures at a glance: total RAM size, program size, display file size, variables memory used, and spare memory remaining. Accessed by appending lines 9200–9240 to any program. | Timex/Sinclair 1000, Timex/Sinclair 1500, Type-in program |
| TS1000/TS1500 Vendor and Supplier Directory | Curated list of recommended TS/Sinclair suppliers with full mailing addresses: ZEBRA SYSTEMS INC. (NY), RMG Enterprises (OR), Thomas B. Woods (NH), The John Oliger Co. (IN), Weymil Corp. (WA), AERCO (TX), Fred Nachbaur / Silicon Mountain Computers (BC, Canada), and Byte-Back (SC). Readers are urged to send for catalogs. | Timex/Sinclair 1000, Timex/Sinclair 1500 |
| ZX-TERM*80 Review | Ed Grey reviews Silicon Mountain Computers’ ZX-TER*80, a full-featured terminal and file-transfer program for the ZX81, TS1000, and TS1500 by Fred Nachbaur. Highlights include selectable 40/60/80-column display, three adjustable windows, upper/lowercase keyboard redefinition, X-MODEM protocol, support for both the Westridge 2050 and Byte-Back modems, and extensive documentation. Requires a non-volatile memory board (SCRAM card) and | Timex/Sinclair 1000 |
| ZX81/TS1000 8K ROM Upgrade | Glenn Read reviews Thomas J. Bent’s 8K ROM upgrade for the ZX81 operating system, covering improvements in initialization speed, automatic FAST mode for command entry, faster scrolling, improved tape error recovery, large-array support, and character set corrections. Known bugs in LPRINT and DIVIDE are fixed. (Same article reprinted from May 1987 issue.) | Timex/Sinclair 1000 |