Software
Exclusive distributors for the ZX80/1 technical documentation. ZX80/1 information, software, accessories, etc. Send for a free catalog to:
The ZX-GROUP
25 Shute Path
Newton, MA 02159
Free ZX80 game software. Just send your original 8K ROM software as listings or on tape and I will send you an equal number of mine.
Ken Wogaman
P.O. Box 125
Somerville, OH 45064
ZX80/MicroAce Users! 1K—Computerized Cowboy, Assassin, Energy Costs, Home Inventory, Phone Number Organizer, and more! 16K—French Vocab., Deluxe Computerized Cowboy. Send SASE for more info. 1K—$5 (2 for $9); larger programs—$10 (2 for $17). Send to:
Steven Karash
ZX Software
11 Holland Lane
New Paltz, NY 12561
ZX80 Chess developed specifically for the ZX80. 3 levels of play against the computer; graphics board displayed; fairly rapid response time. $19 from:
ZX80 Chess (American)
P. Joy
130 Rush Green Road
Essex, RM7 0QA
England
Ask for details on other software; SAE.
Program Techniques: Machine Language, Sorting, others. Educ.: Math (+-x/), Hi Prec. Div., Hex/Dec Conv., Pound Dollar Conv., Temp. Conv., Graphing, others. Games: Submarine, Craps, Lunar Lndr, others. $4.95 ea; any 3 $12; all 1K; check or money order to:
The Italian Connection
869 Levitt Pkwy
Rockledge, FL 32955
Fascinating Life Graphics program; 22×27 world; half second between displays. 4K ROM; 1K RAM. $1 for listing, instructions, and patterns to:
Jon T. Passler
344 Cabot St
Beverly, MA 01915
ZXCHESS and Adventure ‘A’ in 4K or 8K ROM; 16K RAM. Machine code. 6 levels of chess against the ZX80/1; algebraic notation; displays normal video for white; inverse, black. £10 UK; $25 US; incl. shipment to US.
Adventure ‘A’ A search for your space ship to escape a hostile planet. First in a series. £7 UK: $20 US incl. shipment to US.
Artic Computing
396 James Reckitt Avenue
Hull, North Humberside
United Kingdom
Hardware
Remote Switched Isolators. 3 sockets each capable of 1KW load. Prices start at $79.95. For details:
Electronic Specialists, Inc.
171 S. Main St.
Natick, MA 01760
Phone: (617) 655-1532
[Figure: Photo of a remote switched isolator]
8K/4K ROM switch kit. Allows switch selection of ROMs. $24.95. Cassette load AGC/audio monitor; keyboard beeper option; add $10.00 to basic switch kit price.
Marex Electronics
2805 Abbeyville Rd.
Valley City, OH 44280
Overvoltage protector, Model OV-1. A plug-on unit that saves your ICs if regulator fails. Also has computer on/off switch & allows operation on 115 v. AC or 12 v. DC. $35 + $2 shipping. USA only.
Quest Research Associates
P.O. Box 3073
San Jose, CA 95156-3073
16K RAM Expansion plus power supply, model MX-16, $89.95 + $3 shipping/handling. Check or money order to:
INSIGHT
1889 Lewis Dr.
Niles, MI 49120
(or call 616-684-7868 for COD; no extra charge for COD)
48K Memory Extension for ZX81. Allows ZX81 to run 48K Basic programs including up to 16K of assembly code. ZX81 sits on custom built case containing the Memotech. £109 + 15% VAT kit form: £129 + VAT assembled. Send to:
Memotech (Sales Dept.)
103, Walton Street
Oxford OX2 6EB
England
ZX80/1 User Port. A small board allowing 8 independent input channels and 8 output channels, directly controlled from Basic or machine code. Details on uses included in booklet. Complete kit—£11.50; booklet of applications—£.40; suitable loudspeaker—£.80. Add VAT and P&P.
Technomatic
17 Burnley Rd., NW 10
01 452 1500
England
ZX Printer. £49.95 by mail order from:
Sinclair Research Ltd
6 Kings Parade
Cambridge, CB2 1SN
England
The 55 Key keyboard from Schultz Systems (SYNC 1:3) is no longer available. Stocks are exhausted.
User Groups
Bay Area ZX80 User Group
[address omitted]
Oakland, CA 94611
ZX80/1 User Group within the Nottingham Micro-Computer Club. Contact:
G. E. Basford
[address omitted]
Woodborough
Nottingham NG1 4 6 EX
England